1. “I don’t have an eating plan, other than to be perceptive and to learn about your physiology, so that you can adjust things to your needs. Any craving is a good starting point, because we have several biological mechanisms for correcting specific nutritional deficiencies. When something is interfering with your ability to use sugar, you crave it because if you don’t eat it you will waste protein to make it.” Raymond Peat, PhD
2. “In monkeys living in the wild, when their diet is mainly fruit, their cortisol is low, and it rises when they eat a diet with less sugar (Behie, et al., 2010). Sucrose consumption lowers ACTH, the main pituitary stress hormone (Klement, et al., 2009; Ulrich-Lai, et al., 2007), and stress promotes increased sugar and fat consumption (Pecoraro, et al., 2004). If animals’ adrenal glands are removed, so that they lack the adrenal steroids, they choose to consume more sucrose (Laugero, et al., 2001). Stress seems to be perceived as a need for sugar. In the absence of sucrose, satisfying this need with starch and fat is more likely to lead to obesity.” Raymond Peat, PhD
3. “The first reaction to a decrease of blood glucose, at least in healthy individuals, is to increase the activity of the sympathetic nervous system, with an increase in adrenaline, which causes the liver to release glucose from the glycogen stores. The effect of adrenaline on the liver is very quick, but adrenaline also acts on the brain, stimulating CRH, which causes the pituitary to secrete ACTH, which stimulates the the adrenal cortex to release cortisol, which by various means causes blood sugar to increase, consequently causing the sympathetic nervous system activity to decrease. Even when the liver’s glycogen stores are adequate, the system cycles rhythmically, usually repeating about every 90 minutes throughout the day…With advancing age, most tissues become less sensitive to adrenaline and the sympathetic nervous stimulation, and the body relies increasingly on the production of cortisol to maintain blood glucose.” Raymond Peat, PhD
4. “The animal studies that are used to make the argument provided the animals an excessive amount of polyunsaturated fat, which are antagonistic to the oxidation of sugar and tend to reduce the rate of metabolism, and usually also excessive calories. The special value of fructose is that it can be oxidized even by diabetics, lacking insulin, and that it increases the metabolic rate, causing calories to be burned at a higher rate. The journals are publishing propaganda and calling it science. They are doing this to preserve the myth that cholesterol and triglycerides are the cause of heart disease, that was invented in the 1950’s and 1960s to sell vegetable oils.” Raymond Peat, PhD
5. “Insulin release is also stimulated by amino acids such as leucine, and insulin stimulates cells to absorb amino acids and to synthesize proteins. Since insulin lowers blood sugar as it disposes of amino acids, eating a large amount of protein without carbohydrate can cause a sharp decrease in blood sugar. This leads to the release of adrenalin and cortisol, which raise the blood sugar. Adrenalin causes fatty acids to be drawn into the blood from fat stores, especially if the liver’s glycogen stores are depleted, and cortisol causes tissue protein to be broken down into amino acids, some of which are used in place of carbohydrate. Unsaturated fatty acids, adrenaline, and cortisol cause insulin resistance.” Raymond Peat, PhD
6. “When sugar isn’t available in the diet, stored glycogen will provide some glucose (usually for a few hours, up to a day), but as that is depleted, protein will be metabolized to provide sugar. If protein is eaten without carbohydrate, it will stimulate insulin secretion, lowering blood sugar and activating the stress response, leading to the secretion of adrenalin, cortisol, growth hormone, prolactin, and other hormones. The adrenalin will mobilize glycogen from the liver, and (along with other hormones) will mobilize fatty acids, mainly from fat cells. Cortisol will activate the conversion of protein to amino acids, and then to fat and sugar, for use as energy. (If the diet doesn’t contain enough protein to maintain the essential organs, especially the heart, lungs, and brain, they are supplied with protein from the skeletal muscles. Because of the amino acid composition of the muscle proteins, their destruction stimulates the formation of additional cortisol, to accelerate the movement of amino acids from the less important tissues to the essential ones.)” Raymond Peat, PhD
7. “Blood sugar falls at night, and the body relies on the glucose stored in the liver as glycogen for energy, and hypothyroid people store very little sugar. As a result, adrenalin and cortisol begin to rise almost as soon as a person goes to bed, and in hypothyroid people, they rise very high, with the adrenalin usually peaking around 1 or 2 A.M., and the cortisol peaking around dawn; the high cortisol raises blood sugar as morning approaches, and allows adrenalin to decline. Some people wake up during the adrenalin peak with a pounding heart, and have trouble getting back to sleep unless they eat something. If the night-time stress is very high, the adrenalin will still be high until breakfast, increasing both temperature and pulse rate. The cortisol stimulates the breakdown of muscle tissue and its conversion to energy, so it is thermogenic, for some of the same reasons that food is thermogenic.
After eating breakfast, the cortisol (and adrenalin, if it stayed high despite the increased cortisol) will start returning to a more normal, lower level, as the blood sugar is sustained by food, instead of by the stress hormones. In some hypothyroid people, this is a good time to measure the temperature and pulse rate. In a normal person, both temperature and pulse rate rise after breakfast, but in very hypothyroid people either, or both, might fall.” Raymond Peat, PhD
8. “At rest your brain and red blood cells needs sugar and they will keep burning sugar regardless of where they get it.
If you do not eat enough of the necessary nutrients your body will convert your muscles to sugar to keep feeding the brain what it needs and if you are eating enough sugar or things that will turn into sugar your body doesn’t have to break down its own tissues to make the necessary glucose for your blood cells and brains.
In that condition, your muscles at rest don’t require practically any glucose and they will do fine on a pure fat diet but that’s the resting muscle.” Raymond Peat, PhD
9. “If you’re really healthy, then you can meet challenges without experiencing something that Hans Selye would have called stress. For example, if you are not very healthy, just skipping a meal can put you in really serious stress. But a healthy person stores something like 7 or 8 ounces of glucose in the form of glycogen in the liver and the muscles and brain. And since at rest the muscles can burn primarily fatty acids, your brain is the main thing that consumes glucose.
If you’re inactive and relaxed, you can easily go 12-15 hours without eating or without any stress at all. But if you’re not able to store that much glycogen, (for example low thyroid people, or people with a history of severe stress aren’t able to store very much glycogen), and so when you run out of sugar, whether it’s from going all day without eating or because your liver isn’t very efficient, your body tries to increase the available glucose.
Normally, just being awake makes enough adrenaline to mobilize as much glucose from your stores as you need. But when you run out of that stored sugar, your brain still requires sugar to function properly. So, instead of just increasing the adrenaline more and more, when the adrenaline reaches a certain level and can’t get the blood sugar up from storage, then you turn on the cortisol. And that’s the classic stress that can be harmful, because the cortisol dissolves first tissues which are very fragile (like the thymus — that starts turning to sugar immediately when you run out of stored glycogen). And when the thymus is gone in just two or three hours of intense stress, that happens to be one of the reasons they think adults don’t have thymus glands, because by the time they’re dead and are analyzed, the thymus has been eaten up by stress; they might have had a perfectly normal thymus until they were sick and dead.
After the thymus is consumed and turned to sugar, the cortisol starts breaking down your muscles, then your skin. The brains, lungs and heart are spared from stress, partly because in a healthy person they are very saturated with androgens (testosterone and DHEA especially) which block the breakdown function of cortisol. If your brain, lungs and heart are short of those protective steroids then that’s where the stress really starts causing severe, deadly damage. The post-traumatic stress disorder is produced when someone has had such terrible stress, such as being tortured or being in terrific catastrophes, that they not only deplete their stored glycogen and breakdown the expendable tissues like thymus and liver, but then the cortisol starts damaging the brain and heart, and so on. So they get very severe chronic symptoms. Once the stress is completely resolved, then the brain can massively regenerate itself. For example they’ve seen MRIs of girls who have been in anorexia for months, their brain shrinks from living on the cortisol breaking down their tissues, but when they start eating the brain can rebuild itself in just a few weeks.” Raymond Peat, PhD
10. “One of the reasons that the single meal eaters tend to get fat and diabetic, is that it triggers a great surge of insulin, and the insulin then triggers cortisol. If you can eat foods that don’t trigger insulin, that’s the ideal thing. And fruit happens to be the best single type of food for not triggering the stress reactions, because it combines very small amounts of protein, with large amounts of sugar and minerals. Potassium happens to handle sugar in place of insulin, and the fructose component of fruit doesn’t require insulin. So, eating a lot of fruit, even at one meal a day, produces much smaller amounts of insulin, obesity, and cortisol, than eating, for example, just one big meal of meat and potatoes. Meat powerfully stimulates insulin and cortisol. And starches are more stimulating to insulin than sugars.” Raymond Peat, PhD, “Effects of Stress and Trauma”
11. “One of the things was reading John Yudkin’s book, the English guy who wrote a book saying that sugar causes heart disease, and he was very clear showing that sugar increases cholesterol and that was back in the time when everyone was saying cholesterol causes heart disease. And I was very impressed by his research but since I saw cholesterol as a protective factor from studying progesterone, I saw that if you’re deficient in progesterone or under stress, your body would increase production of cholesterol to make more progesterone to protect your systems. And so I believed Yudkin was on the right track but since I say cholesterol as protective rather than harmful, I took his evidence to mean that sugar would helped resist stress, so that started me. Along that line – and I have been a migrainer for all my life and I gradually came see that a change in my rhythm of eating in relation to activity was usually what brought on a migraine attack. And often I would have very odd food cravings just before the migraine appeared and even shortly after eating, I would get food cravings and I started trusting those cravings and eating again, and I found that if I ate enough sweet stuff like a quart of ice cream when I felt a migraine coming on, it wouldn’t come on. And I was also a sort of a problem sleeper if I stayed up just an hour or two after my normal bed time, then my sleep would be disturbed even for a couple following nights. And one night I was talking on the radio and that I wanted to keep going hour after hour and I had a friend to go out and buy me huge milkshakes about one an hour and I was able to keep talking until 1: 00 AM, and didn’t have any problem at all going to sleep. And so I recognized that I had a peculiar need for sugar when I was doing anything unusually stressful, and so that started me thinking more about the physiology of it.” Raymond Peat, PhD
12. “Starving an animal with a tumor increases the stress hormones, providing free fatty acids and amino acids, and accelerates the tumor’s growth…it’s impossible to “starve a tumor,” by the methods often used. Preventing the excessive breakdown of protein and reducing the release of fatty acids from fat cells would probably cause many cancer cells to die, despite the availability of glucose…” Raymond Peat, PhD
Below are a few vintage sugar advertisement images that actually provide truthful information about the benefits of sugar. To see the full collection of vintage sugar advertisements (first link), as well as further reading on why sugar is actually healthy and needed (within context), click on the resources below.
- Enter the WABAC Machine, Part 1: Sugar is Healthy
- Sugar | Carbohydrates: Reference Page
- Healing Treatment, 4,000 Years Old, Is Revived (1990)
- Theurapeutic Honey
- The Healing Power of Sugar
- Eat More Evil Sugar for a Well Developed Sculpted Classic Physique
- Fruit (sugar) on Muscle Development, Fat Loss, and Health: Kramers Mackinaw Peaches, The More you Savor the Flavor the Better you Digest, Why Fruit is Optimal, and Sucrose to the Rescue
- Sugar Consumed Equal Fat Gain?, We have Lost Context with Black and White Thinking Mentality, Carbohydrates in Context, Favor Carbs in the Form of Fruits and Root Vegetables for Fat Loss, Insulin, Low Blood Sugar and Regulation
- Sugar, Fat Oxidation, Protective Saturated Fat, Sir Philip Randle and Bernardo Houssay
- The Truth, Misconceptions, and Faulty Beliefs and Accusations of Sugar, Sucrose, Fructose, Glucose, and Increasing the Metabolic Rate
- Everyone is Beautiful, Health is Always the Top Priority, Nonsense of the Past, Get Slim the Pathé Way, Sugar is Not the Problem, Rethink how you Exercise
- The Compiled Work of Raymond Peat, PhD
- The Thyroid: Reference Page