Politics & Science: Fats

PODCAST | Ray Peat

null | Ray Peat

00:00:00 > JOHN BARKHAUSEN: This interview with Dr. Raymond Peat was recorded on January 7, 2012. Welcome to Politics & Science. I'm your host John Barkhausen. And this week, I'm, once again, very pleased to have on my show Dr. Raymond Peat, who has a PhD in biology and also studied extensively in the fields of physiology and endocrinology and, in my opinion, is a very learned science historian. Ray, do you want to add anything to that bio or fix it? RAY PEAT: Oh, no. That’s okay. JOHN BARKHAUSEN: Okay. This show is inspired by two letters that Ray Peat wrote. It's on his website, www.raypeat.com. I think both articles are up there. One is called milk in context, allergy, ecology and some myths. And the other is vegetables etc., who defines food. And both of them take on the issue of the quality of our food

00:01:02 > and how it's evolved or devolved over the years. And in this show today, I would like to discuss various foods and how they've changed or didn’t change and how our culture and food production processes and our environment have influenced the changes. Many of us feel that if we eat the basic food groups, we’ll get the nutrition we need to be healthy. But, Ray, you write in these newsletters, at one point, that good nutrition involves much more than essential nutrients. So I’d just like to maybe backup a little bit and start at the beginning. How do we decide what is nutritious for us and how are these decisions traditionally made as opposed to now? RAY PEAT: Well, traditionally, people just would eat something that tasted good. And if they survived and stayed healthy, their families and descendants would keep eating it. So each area evolved

00:02:04 > pretty safe mixtures of foods. But as soon as organization got involved, pharaohs or kings and dukes and so on and, eventually, corporations, they decided people should eat what gave them the best profit. And so, the health of the people varied according to the convenience of who is in charge of the economy. And since World War II – well, I guess the Germans really started it. When they were blockaded in the First World War, they had a good, advanced chemical industry, and so they started learning how to make substitute foods, substitute materials for war and so on, and so they used it for civilians’ survival. And

00:03:06 > by the Second World War, they had developed pretty good imitation foods. For example, they fed their Russian prisoners of war sawdust bread that resembled bread, but had no nutritional value. And the FDA saw the success of that and decided – even though in the 1940s, they had said that gums were decent for human consumption, they produced some kind of biological damage generally. But they finally agreed with the corporations that it was okay to add fillers like sawdust, cellulose, seaweed gum, various tree gums and so on, so that now – a baker recently said that he hadn’t realized

00:04:08 > he could make a good loaf of bread with 18% sawdust. JOHN BARKHAUSEN: That’s sounding. I remember when the fiber craze sought of hit the general culture, there were breads in our supermarket here – I think maybe Arnold or – I'm not too sure about that, but one of the brands definitely was advertising extra fiber and in the ingredients was sawdust. RAY PEAT: Yeah. Now, I think they have a more diplomatic way of saying that. I think they say nutritional fiber. JOHN BARKHAUSEN: And that can’t be – when they say that, that can’t be sawdust, you believe? RAY PEAT: Yeah. Anytime, there's a pleasant sounding unfamiliar ingredient in the food, it’s probably a waste product from industry. The chitin – various waste products from the shrimp industry are now used in food as well as

00:05:10 > health foods. If you look at each industry and see what they had a problem getting rid of, then you'll see the food technologists learning how to make people eat it. JOHN BARKHAUSEN: That’s very interesting. So the food waste just comes around again, gets recycled into the system again. RAY PEAT: Yeah. For example, the EPA was having complaints from insect infestation and such from the mountains of pulp waste from the orange juice industry. And they told the industry to do something with their horrendous quantities of pulp. And by using microbial enzymes, they found that they can make it water soluble and have creamy orange juice and pulpy fibrous orange juice. But it happens to be a chemical that would never occur in the natural fruit. And it has

00:06:12 > very unpredictable health results in the intestine because it's something people would never have been exposed to naturally. The fish industry had a similar interaction with the Environmental Protection Agency. They were either dumping their fish processing waste into the ocean or they were processing or hauling it inland for landfill. But it was so stinky the EPA told them to find other ways to dispose of it. And that's where they came up with the fish protein powders for sending to famine areas or using as a food additive in US and fish oil so that the fat and protein found health food uses. JOHN BARKHAUSEN: Yeah. The solution to pollution is

00:07:14 > distribution. It’s a saying I’ve heard. Well, that doesn’t sound very appetizing, I must say. But, I guess, if you can sell it – this brings us back to convincing people to eat things as food when they otherwise might not think it is food. And it is interesting that one culture will eat something that's completely abhorrent to another culture, like they do eat insects in Africa, I believe, and consider them a delicacy whereas in this country that's not considered to be a normal thing to do or even appetizing. RAY PEAT: Yeah. Once when I was visiting friends in Mexico, I ate with them and there was a nice little thing that was sort of like a salmon cake patty, mildly fishy tasting thing. And I asked what it was, they said we’ll tell you after you finished. And

00:08:16 > they said it was a mosquito cake, mosquito larvae. JOHN BARKHAUSEN: You’re kidding? RAY PEAT: Skimmed off a pond, I guess. JOHN BARKHAUSEN: And they can skim off enough larva to make a cake? RAY PEAT: Yeah. They have very fine nets, especially for that – they get some minnows, but that happened to be the very little mosquito wrigglers. JOHN BARKHAUSEN: And that’s a traditional food of Mexico? RAY PEAT: That particular area. It was over on the eastern side, somewhere near Xalapa. JOHN BARKHAUSEN: And how did that sit in your stomach after you learned what it was? RAY PEAT: Oh! Very well. JOHN BURKHAUSEN: Oh, good. RAY PEAT: Tasted just like eating a salmon patty. JOHN BARKHAUSEN: That’s interesting. So how do we decide what food is. It sounds like you’re saying that, basically, we’re told at this point, what's food and what isn't

00:09:18 > and our instincts aren’t really working or…? RAY PEAT: Oh, yeah. I think it's the thought process. One of the ugliest Mexican food products, I think, is the fungus-infected corn kernel, makes a big blue swelling on the corncob, and it’s a mushroom growing in the corn, but it stimulates a tumor in the corn. It’s somewhere between a tumor and a fungus. But it makes a very pleasant – you can buy them canned in the US, but it’s a very pleasant, semi-mushroom tasting material. JOHN BARKHAUSEN: And that's something that isn’t a traditional food, but is something that has been adapted for modern use? RAY PEAT: Yeah. It is a traditional food, very old source.

00:10:20 > It just occurs spontaneously in the corns, I guess. They can infect corn to make it industrially. JOHN BARKHAUSEN: And do you feel like most of the – or a lot of the foods that we eat now are basically influenced by industrial marketing? RAY PEAT: Yeah. Almost entirely. About 40 or 50 years ago, I read that the food industry had been testing various things against their panel of experts and they found that the public taste preferred artificial flavors over real flavors and things like ice cream. They had been so trained. JOHN BARKHAUSEN: It's hard to know where to go. This is such a huge topic. But since you mentioned ice cream, I know that at one time, and maybe it's still true, that they were actually exempt from revealing what their ingredients are. The ice cream lobby somehow obtained an

00:11:22 > exemption from the law by which people have to declare what's in the foods. So they can say artificial flavors and it’s a bunch of chemicals basically. RAY PEAT: Yeah. That’s still the general practice. And worse than that, they don’t even have to mention on the label something which is actually present. If it was mostly removed, we call it a processing aid or incidental ingredient. And even though it's really there, even though they intended to remove the bulk of it, some of it’s there and can cause allergic or toxic reactions, but they don’t have to say it on the label. JOHN BARKHAUSEN: So that’s a bunch of chemicals or one chemical or anything they want to use? RAY PEAT: Anything, yeah. JOHN BARKHAUSEN: Yeah. RAY PEAT: And even if everyone is following those extremely

00:12:24 > useless rules of the FDA, apparently, the industry doesn’t take the FDA very seriously because I’ve bought ice cream from companies that said all natural ingredients and I would generally intend to buy just the vanilla because I didn't really trust them, but sometimes I bought vanilla pure white ice cream from the company that used only natural ingredients that it would have a very intense strawberry flavor. And other times from the same company, I bought what was labelled vanilla ice cream and it tasted just like vanilla ice cream, but it didn’t have the black flakes that their vanilla normally did. Instead, it was dark brown chocolate colored that absolutely I didn’t feel like tasting. So from those two or three

00:13:26 > times that someone at the factory messed up, it proved that they use a brown coloring and a pink coloring and artificial flavoring instead of the three natural ingredients that they claim. JOHN BARKHAUSEN: Might as well just cut to the chase here, and one of the things I wanted to talk about today since we’re on the subject of ice cream and that is that a lot of times ice cream makers use thickeners, the gums you are speaking of, carrageenan and locust bean gum and there’s another one too I can’t think of, guar gum. And, in fact, I think everybody thinks those might actually be good for you, but maybe you can explain to people – and a lot people out there have allergic reactions to foods – why these gums may actually be the thing that's causing the allergic reaction and not the milk that the ice cream is made with.

00:14:28 > RAY PEAT: Well, the FDA recognized that problem 60 years ago. And the literature is full of published reactions to all of those gums Carrageenan and alginate from seaweed are probably the worst of them. Carrageenan is recognized to be carcinogenic to the intestine and liver and it produces information. It’s a standard lab method for producing arthritis or inflammation of any organ that they want to study, but the assumption, I guess, is that if it only irritates the intestine and causes cancer in the liver that is tolerable, but what they’re neglecting is that these particles or fibers, even much bigger than the

00:15:30 > molecules that have the gum function, particles of that size are fairly massively passed through the intestine. If you imagine that when a person is under stress, even bacteria and larger particles, up to size of a red blood cell or larger, can go right from the intestine into the bloodstream where then the immune system has direct interaction with them. And if the particle is big enough, it can stop the flow through a capillary or arterial. So small additives aren't going to stay entirely in the intestine. The particles of silicon dioxide, people say, ‘oh, that’s just harmless, sand-like material,’ but when it's produced by vaporization or precipitation,

00:16:32 > they might call it fumed silica or colloidal silica. JOHN BARKHAUSEN: What’s it used for? RAY PEAT: Almost everything. They can use it to create a viscous consistency in cosmetics and soaps and any food that needs a new texture. It’s almost all vitamins and drugs are now using that or something like it to make the powder flow nicely when they run it through the machine. And it’s basically a very finely powdered glass. With the powder, it’s much smaller than the particles of starch, for example, that can be preserved across into the bloodstream. And at a certain size,

00:17:34 > they very easily go from the blood into tissue cells. And at a certain size range, they are very able to cause sensitization, so that something like silicosis – even though it’s supposedly being amorphous rather than crystalline, supposedly they aren’t going to cause the silicosis -like reaction, the things that people get from the silicone implants and so on. But there is an actual immunological similarity and overlap when the particles are of a certain size. And there are various names for that, but silicon dioxide or silica is the basic description. JOHN BARKHAUSEN: Yeah. And so, that gets into your tissues and it causes... RAY PEAT: Chronic inflammation. JOHN BARKHAUSEN: Okay. RAY PEAT: Degenerative

00:18:36 > inflammatory changes such as lupus-like symptoms, scleroderma is probably the most common thing caused by the silica reaction. JOHN BARKHAUSEN: Now, it's actually hard to buy any processed food now that doesn't have some of these things. Carrageenan, I was very interested in your newsletter that we are talking about today. I think it was in milk in context, allergy to ecology and some myths that’s available on your website, raypeat.com. You were saying carrageenan is some kind of a pseudo – causes a pseudo -latex allergy reaction. And I was wondering if you could talk about that because a lot of people are allergic to latex. RAY PEAT: Yeah. Well, the carrageenan is – one of the arguments is that in its unbroken down format, fresh out of the seaweed, it doesn't cause cancer even though it might

00:19:38 > cause horrible inflammation. But when you eat it, it passes through the intestine where bacteria break it down and the broken down form of carrageenan is recognized as carcinogenic. But try to communicate the logic of that to any of the regulatory agencies, they all just reveal that they’ve serving industry and convenience rather than protecting the public. JOHN BARKHAUSEN: That seems sort of odd because a lot of things are fairly harmless when they are outside your body, but when you eat them, they’re poisonous. So I don't see why that would be hard for themX to understand. RAY PEAT: Well, they specifically say that the fiber undegraded isn’t carcinogenic, but degraded it is carcinogenic. But they neglect to point out that your intestine has

00:20:40 > bacteria that can degrade it. And the reaction to latex is really a general phenomenon that the plants all have some kind of defense reaction. And even under the best conditions, they’ll produce some of these. But they are able to adapt, so that when they are injured, they increase their defensive material, so that if a bug bites a plant, it expresses the enzyme that can breakdown the fibrous material of the bug, the chitin, and so chitinase is a general defensive enzyme that is intended to dissolve bugs and any pest that invades the plant. But when you stress a plant in anyway,

00:21:42 > it defends itself and increases all of these defensive toxic chemicals. And simply mistreating a plant by growing it in a monoculture, forcing it with not well-balanced fertilizers and so on, the plant is intensely stressed, and so produces increased amounts of these defensive toxins and enzymes. And so, a plant growing in the wild might not be allergenic or toxic, but once you’ve cultivated it under extreme conditions for generations, it will produce things such as toxic latex that will kill people who are sensitized to it. But lots of stressed plants can produce

00:22:44 > exactly the same kind of enzymes that isn’t just literal latex, but it’s any stressed plant that is able to produce similar enzymes. JOHN BARKHAUSEN: So you're saying that people are allergic to latex because the plant purposely producing a toxic chemical to protect itself when it is wounded? RAY PEAT: Yeah. JOHN BARKHAUSEN: Like a latex comes from a rubber tree, is that right? RAY PEAT: Yeah. Bananas and rubber trees are the – they were the first ones to identify the same kind of allergic response, a cross reaction between natural latex rubber, for example surgical gloves or other surgical materials – and bananas. The people who have a dangerous reaction to one will usually have it to the other. But those people will

00:23:46 > also react to many other kinds of fruit. I think kiwis are a major overlap. But probably almost any plant that is industrialized and forced into production will increase their production of these things, and so the recognizing that a person who is allergic to bananas is likely to be allergic to six or eight or ten other similar fruits – not even similar fruits, but industrialized fruits. JOHN BARKHAUSEN: And not all people are affected that way, why? Maybe this is too big a question, but why are some people affected by those plant toxins and others not? RAY PEAT: The person who is under stress is the – I think in that newsletter I mentioned

00:24:48 > that estrogen induces a similar protein in humans. And things like estrogen, which intensify the stress reaction, are probably increasing throughout, especially the industrialized populations, and the biological function of estrogen is to stress and activate tissues to get them growing quickly, but it should only act for 12 or 24 hours per month to activate and make the tissues take up water, slow up, start growing and so on. But when we’re chronically exposed to industrial estrogens in the environment, that activates our stress reactions. In the intestine, for example, it makes the

00:25:50 > intestine more permeable and will simply take up more things, but it also activates particular patterns of enzymes. It activates enzymes in the intestine that overlap with the gluten molecule. And our immune systems reacting to overdose of estrogen effect don't distinguish that from gluten, and so the gluten interacts with chronic estrogen exposure to produce very serious chronic inflammatory symptoms. And that enzyme happens to be a cross-linker that estrogen activates in the skin, for example. It ties protein molecules together. And when this enzyme is extracted

00:26:52 > from microorganisms, bacteria make a similar enzyme, it can be used to tie any protein together that contains, I think it’s, lysine and glutamic acid, which is basically any protein. And the food industry is widely using that enzyme to make artificial fish and meat products. So if you go to a fast food restaurant and order a fish patty, you are probably getting a mixture of seaweed gum and fish waste fragments diluted together with this enzyme, which cross reacts with estrogen effects and gluten. And you never expect that sort of enzyme to exist in a fish patty, but it's industrially useful,

00:27:54 > so that lunch meat, even things that are sold as, I guess, lamb chops are imitated by gluing meat fragments together. They call it restructured meat. We accidentally – we had been eating squid patties for years and there was something in the meat case that looked like the usual product. And I cooked two of them and they shrank down to about the size of silver dollar from having been about 4 or 5 inches across. And we recognized something was wrong, but since that was what we had fixed for supper, we went ahead and ate them and got really sick. I was sick for over a week after eating it. And so, I looked up what was happening to squid patties, and

00:28:56 > they use seaweed jellylike alginate or carrageenan to make a jelly and then they sweep up all of the waste products that didn’t had the right shape and grind them into a mush and add the cross-linking enzymes so that the mush coagulates. But it’s intermixed with the seaweed jelly, so it contains a huge amount of water, much more water than the normal squid, so you get terrific shrinkage as well as this weird chemical composition cross-linking the fish protein and the squid proteins with the seaweed jelly. JOHN BARKHAUSEN: I don't think that would sell well on the menu at a restaurant. RAY PEAT: No.

00:29:58 > But you get it very often at fast food places especially. They used to have textured soy protein that looks like chicken or ham. They were very skillful at making a fibrous meaty appearance in soybean protein, but now they don't even have to use that much of a natural product. It can be seaweed and waste meat scraps that are reshaped entirely. JOHN BARKHAUSEN: Yeah. Well, I always – you do wonder when you go by the deli in the supermarket and you see all those hams and roast beefs and other cult cuts and they’re also uniform and perfect, the turkey loaf, and I suspect what you're talking about, it’s how they achieve that uniform look. RAY PEAT: Yeah. And all the studies that I have seen comparing various foods,

00:31:00 > one of the most carcinogenic is processed meats, just as a big category, anything processed, but that mostly includes those loafy materials. JOHN BARKHAUSEN: So those meats are also full of – lot of additives and preservatives and strange-looking acronyms that represent chemicals. I suppose it's a combination of all that that is making them carcinogenic. RAY PEAT: Yeah. And the aging process, they add deodorants and things to change the smell of aged meat, but just the practice of aging meat probably makes it more carcinogenic because when meat starts to rot, the odor chemicals are polyamines –cadaverine and putrescine are the chemical names

00:32:02 > of two of the things that aging produces – and those stimulate cell growth and there are techniques being developed to block the production of those tissues to stop cancer growth. So their connection with cancer is well known. And just storage of the meat too long will produce those things. And then on top of that, they add the various preservatives. And even harmless sounding things like citric acid because they are produced by microorganisms from waste byproducts, you get some of the chemicals from the industrial waste material that you started with and then some microbial additions to the mix. No matter how careful they are trying to refine out a pure citric acid, it always

00:33:04 > has traces of where it came from. So even the nice sounding ingredients aren't really so nice when you might be sensitized to them. JOHN BARKHAUSEN: Yeah. That sounds rather discouraging. I did want to ask you about aging meats because a lot of people around here raise their own cattle and sheep and things, and it's just a common knowledge that it doesn't taste good unless you age – hang them for a few days or I think it’s maybe five days at 40 degrees the meat gets more tender and gets more flavor. RAY PEAT: It definitely gets more flavor, but that’s mostly advertising, the people who are in the habit of doing it that way just to taste better. But the reason I eat more meat when I'm in Mexico is that it tastes better because it's fresh

00:34:06 > because they don’t – in the small towns where they don't have refrigerators they just sell it off the carcass, and so they have to sell it within the first two or three or four days. And it always tastes really fresh. And it’s very rare to find fresh tasting meat in the US. JOHN BARKHAUSEN: Up here, the people I know who do hang it for maybe four days at a very cold temperature, like 40 degrees, which would be difficult to do in Mexico, I imagine. RAY PEAT: Yeah. Four or five days at 40 degrees itself can taste very fresh. But in the supermarket, the food technology people have said that it gets tender after two weeks, so you shouldn’t sell it before two weeks. But it also develops putrescine and spermidine and cadaverine that are mildly toxic, possibly

00:35:08 > carcinogenic. JOHN BARKHAUSEN: Yeah. I’ve got to say putrescine doesn’t sound too good to me. Go ahead. RAY PEAT: And the FDA has never been very enthusiastic, or the agriculture department, about enforcing the laws against chemical treatment of the animals while they’re alive. There is some pressure to make them not inject chemicals in the last day or so before they kill the animal. But, in Europe, recently, there's been evidence that they are treating their living animals with big doses of glucocortico steroids to breakdown the fiber while they are alive to tenderize the meat. JOHN BARKHAUSEN: No, I thought Europe was averse to that. RAY PEAT: Yeah, they are. But

00:36:10 > they, I guess, aren’t spending enough enforcement money, and so the industry is getting away with breaking the rules. JOHN BARKHAUSEN: You were going to say something else when I interrupted there? RAY PEAT: Just that, even though the rules are in place, you can't trust anything that comes from a big corporation because the FDA is doing its best to look the other way. JOHN BARKHAUSEN: Yeah. I think that's – we’ve discussed this before on various shows and it does seem that the regulatory agencies are really there to just absorb the liability of the corporation and be a buffer between them and the public. RAY PEAT: Yeah, I think so. JOHN BARKHAUSEN: We haven't discussed at all in detail growing practices. You said that growing crops and monoculture makes plants produce a lot more toxic chemicals, the chemicals we've been talking about somewhat, is there a way of growing things that isn't so stressful?

00:37:14 > RAY PEAT: Yeah. If the plant grows more slowly, the soil will more naturally release chemicals that the plant can select from, but when they are adding chemicals that they know – that the grower knows will stimulate the fastest maturation and production or whatever they're interested in, the plant isn't absorbing exactly the ideal combination of nutrients, and so it distorts the actual structure and physiology of the plant. There have been experiments in which corn was fertilized heavily with potassium in one case and with phosphate in the other group. And they found that – I forget

00:38:16 > which way it went – I think it was the potassium fertilizer caused the plants to emphasize their tassels, the male pollen producing component, and I think it was the phosphate fertilizer that made them overproduce the female cob part of the reproductive material. So you can almost change the sex ratio, the balance between male and female parts of the plant despite pushing one or the other kind of fertilizer just with those two ingredients. And when they are designing a fertilizer to produce the most fruit or seed or whatever they’re after, the plant isn’t going to be as happy being forced in that direction. So since it's physiology warped, that’s

00:39:18 > usually enough for it to also produce some of the toxic chemicals defensively. And one of the things that people have known for many years is that the roots of plants generally have less of the defensive toxic chemicals that affect animals like us because they're defending against fungus and bacteria that live in the ground. Or the upper part of the plant, the leaves and stems and seeds are defending against our grazing animals and insects and people that pluck off the easiest parts to get at. So the worst toxins are in the leaves and seeds. And in many cases, the plants

00:40:20 > want to spread their seeds, which are defended by internal toxins, but they want to spread them by having birds or other animals eat the fruit and pass the seeds through to propagate them elsewhere. And so, the fruits are evolved in many cases to be delicious, nutritious and non-toxic. So if you look at the plants’ defense system, the fruits are almost always the safest part and the roots would come in next as the second safest. Seeds are the very worst for the plant’s toxins and leaves are intermediate for toxicity. JOHN BARKHAUSEN: And is that in part why so many people have an intolerance of gluten and flour products? RAY PEAT: Yeah. All of the

00:41:22 > storage proteins have the multiple function not only to pack a lot of nitrogen into a small space in the seeds, so that when water is available, enzymes can rearrange the stored energy material with the nitrogen and double or triple the amount of protein because they basically just packed nitrogen into a specialized protein for storage. And those proteins also have the added benefit to the plant of being irritating, indigestible or toxic to lots of predators. JOHN BARKHAUSEN: I see. Somebody pointed out recently, I think it was on a show with you, that the gluten that everybody – a lot of people seem to be allergic to these days – is considerably worse than it used to

00:42:24 > be because they have been actually breeding wheat plants to develop more gluten because it's useful industrially for producing food products. And that's actually made it easier for them to produce bread, but harder for people to digest it. RAY PEAT: Yeah. That sounds reasonable. JOHN BARKHAUSEN: And that sort of brings up the subject of the agricultural practice of breeding and its new form of genetic engineering. A lot of food products are being bred, I think, more and more not for delightful eating, but for marketing, meaning that they ship well and that they’ll store well, but they don't necessarily taste well. RAY PEAT: Yeah. In the 1940s, tomatoes often had a very intense, nice aromatic flavor. And

00:43:26 > I haven't seen a tomato like that for about 50 years because they’re all the commercial seeds. Even people who buy seeds at a seed store are going to get non-traditional fruits. Every farmer used to have their own variety of vegetables and those heirloom vegetables have largely been lost. Some people are storing the seeds, but they aren’t being widely propagated. JOHN BARKHAUSEN: Around here, people are always buying them. They are available, the heirloom tomatoes, but we've been plagued by blight these last few years. So I don't think many people have gotten great ones. What's your take on the effect of genetic engineering on food quality? Is there any benefit? We are mostly talking about the harmful effects of

00:44:28 > industrial practices on food, but perhaps there's a silver lining somewhere? RAY PEAT: No. The genetic engineering, the most common thing is to put an insecticide protein into the plant. And people or animals are known to react allergically to a strange protein that wasn't there before. And other insects, they are seeing butterflies killed by the insecticide that were put there to defend the plant or make it more profitable to produce. JOHN BARKHAUSEN: Yeah. RAY PEAT: I think allergy is the main thing to worry about with meddling with genetic composition

00:45:30 > of plants. JOHN BARKHAUSEN: Well, the allergies certainly seem to be on the rise from my observations, so what’s your take on people’s allergy…? RAY PEAT: I think all of the major allergic symptoms are increasing, but some studies show that unsaturated omega-3 fatty acids in a woman's diet when she is pregnant seriously increase the allergies of the baby. So it isn’t just food supplies changing, but the human supply is being sensitized by the stressful things in our national diet. JOHN BARKHAUSEN: And can you explain what that is, Ray? RAY PEAT: Well, the omega-3 fats are – grass, for example, has more than the grain

00:46:32 > seed product. The seeds have more of the omega -6 fats and they are a little more stable. The -3, I think, are in the leaves because they don’t have to be stable for so long. And the cold temperature resistance corresponds to the highly unsaturated, especially in N-3 fats, so that the algae in the ocean, at a low temperature, will produce highly unsaturated N-3 fats that are known as fish oils when the fish elongate. And they are being highly promoted, starting, I guess, with the waste from the fish industry. And the discovery

00:47:34 > that the linoleic acid that was popularized as the essential fatty acid, they discovered that was pretty carcinogenic. So there was a shift in marketing from the cottonseed oil or safflower oil type of fat over to the fish oil type. And all kinds of arguments have been advanced to encourage people to eat more of those. A French group decided that since the brain of an adult contains lots of fish oil like fats on the diets that we've been exposed to. And babies – any mammal before it's born synthesizes mostly saturated fats out of the glucose and fructose absorbed from the mother's blood. So this French group said the babies’ brain

00:48:36 > aren’t getting enough fish oil, and so they setup an apparatus to make a sound and record the fetus’ response to the sound. And so, they could tell how alert the fetus’ nervous system was. And they were going to demonstrate that they can make the fetus learn faster by feeding the mother fish oil. And what they found was that the nervous function was impaired in the women who ate the fish oil. And other studies showed that the babies would be more allergic too. But in the study of the learning ability, they also found that the babies were smaller, implying that their the brains and bodies altogether grew less under the influence of the fish oil probably because of the anti-progesterone effect, keeping the bias in the uterus towards estrogen

00:49:38 > against progesterone, progesterone being the brain growth factor and lowering thyroid in proportion to the unsaturation of the fats. So the population, which has its progesterone and thyroid suppressed, is going to be the more allergic stressed population. JOHN BARKHAUSEN: And you're saying that fish oil is also included in the same category as vegetable oils, like safflower oil and cotton oil and corn oil, all the unsaturated... RAY PEAT: The seed oils are highly unsaturated, but they’re N-6, means that they have a tail of five carbon atoms that are saturated, like stearic acid and palmitic acid are things that we can

00:50:40 > synthesize in our bodies out of sugar. And those are all saturated and very stable. But at least the seed oils have this chain of five completely saturated carbons at the tail end. The fish oil, N-3, have only two stable carbons at the end, so they oxidize much more easily. JOHN BARKHAUSEN: I get you. So in the few minutes we have left, Ray, perhaps we should we should try to strike some kind of a positive note. There is food out there to eat. And what is your opinion is the food that people should be focusing on, both for pleasure and for health? RAY PEAT: Well, fruits, if you know that they are grown in safe, un-chemically treated environment. It’s fairly hard to find really right fruit in the stores. But if you can find ripe oranges or tangerines,

00:51:42 > those are very safe for its juicing, for example. And eggs, if you can find eggs that weren’t fed linseed oil or soy oil or something that gives them a fishy taste – just go by the taste, sweet oranges, eggs that taste like eggs and not like fish meal, and meats that taste fresh. Milk, it’s important to judge the taste of the milk too because there are so many different feeds that the cows get. If they feed a natural pasture that’s full of allergenic weeds, organic milk cannot be allergenic just because the cow is eating a weird mixture of vegetables. JOHN BARKHAUSEN: Yeah. I just – go ahead, sorry.

00:52:44 > RAY PEAT: Well, those foods are really the only ones I trust at all. And I'm suspicious of them in the American stores. Eggs, milk, some cheeses. You have to be very cautious with cheeses because they are putting seaweed and other gums in them to increase their water content. Eggs and meat are among the safest. JOHN BARKHAUSEN: Just to go back to the dark side, they are increasing the water content, for what reason, to get more money for the cheese? Add to the weight? RAY PEAT: Oh, yeah. They can add 30% to the weight just by putting more jelly in it. There was a Wisconsin parmesan that I ate for years, and suddenly it got soft and moist and caused bowel inflammation in me. So I stopped that. And found the

00:53:48 > real parmesan called Reggiano, is the only one that I eat now and a couple of other strange ethnic cheeses from Greece or Italy that still have the traditional methods. JOHN BARKHAUSEN: And you’ve said that – I thought I’ve heard you say that fresh cheeses are safer to eat than aged cheeses. But it sounds like you're eating some aged cheeses? RAY PEAT: Yeah. Because I can’t find any fresh cheeses in the US that don’t have added… JOHN BARKHAUSEN: What’s the difference between – in terms of benefit, what's the difference between fresh and aged? RAY PEAT: They should be chemically and nutritionally very similar in value, but the aging process typically involves the growth of the fungus that improves the taste for giving them aromatic

00:54:50 > qualities, but it is also a risk if they use a different fungus than the one you're accustomed to. So for security, cottage cheese, if they haven't added anything, is very safe. But I don't use any cottage cheese now without washing it because ones that I have access to add lactic acid and, what they call, dressing. So by rinsing it, I lose about 30% of the weight of the material, but it comes out to be a clean milk curd. JOHN BARKHAUSEN: So milk, eggs and some meats if you can find some that are – I guess, any of these foods, if you can find them that they are raised without pesticides. RAY PEAT: And fruits, some of the very specialty things that you only see once or twice a year, even in

00:55:52 > very adventurous stores, cherimoyas and sapotas, I think California and Florida grow some good sapotas. And some of those are very sweet, mushy. Pawpaws are available in parts of the south especially. Occasionally, they come out to the coast, but the southern states, they are a traditional fall fruit. JOHN BARKHAUSEN: I’ve never had any of them. They all sound very exotic. RAY PEAT: Well, they were – like George Washington, I think, said the pawpaw was his favorite dessert. JOHN BARKHAUSEN: Is that right? RAY PEAT: They’re a very common native desert. But the industrialization – they are tender and fragile, and so they aren’t a good fruit of commerce.

00:56:54 > JOHN BARKHAUSEN: I guess, like a real peach, which – actually had one of those fairly recently. It was unbelievable when you get a real peach. RAY PEAT: Yeah. JOHN BARKHAUSEN: Hey, you know, one dairy product that we found recently that we think is pretty good, it's called Fage. It’s a Greek strange yogurt. RAY PEAT: Yeah. It seems that they have got most of the lactic acid out of it. JOHN BARKHAUSEN: And it has no extra ingredients listed on it. So it just seems to be milk, maybe some salt. RAY PEAT: The main thing wrong with ordinary yogurt is that it’s got lots of lactic acid in it, and so it’s basically the same as cottage cheese for safety. I think it’s good. JOHN BARKHAUSEN: Yeah. So if you can strain the lactic acid, which we’ve covered in other shows – but you don't think it's a good idea to eat extra lactic acid – then it’s a good food. RAY PEAT: Yeah. It should be minimized. That’s why I don't advocate aerobic exercise.

00:57:56 > People should do everything they can to minimize lactic acid. I think I am going to do a newsletter on cancer and the role of lactic acid in cancerization. But it also promotes inflammation and fibrosis and degenerative diseases. So it's good to avoid it in foods as well as produced by stress. JOHN BARKHAUSEN: Well, I look forward to that newsletter, Ray. And now we are actually out of time. So I should tell everybody that we've been talking to Dr. Raymond Peat, has a PhD in biology and extensive studies under his belt in the fields of physiology and biology and endocrinology and knows a lot about science history. So you can visit his website at raypeat.com where you'll find the articles we were discussing today in part and many, many others. So, Ray, thanks so much for coming on Politics & Science today.

RAY PEAT: Okay, thank you. JOHN BARKHAUSEN: The interview you just heard with Dr. Raymond Peat was recorded on 7 January, 2012.And much more information can be found about Dr. Peat's work at raypeat.com. And podcast of this show are sometimes and, hopefully, will all be available at Politics & Science on radio4all.net. Radio4all.net and search for Politics & Science. I've been your host John Barkhausen. Thanks for listening and tune in again next week for another edition of Politics & Science.