Friends with Fat

Friends with Fat - Fat is considered as the enemy of health. Cholesterol, obesity or high blood pressure is the adverse effects of fat. However, it is not easy to shy away from fat. Fatty foods tend to be more delicious to eat. In food, there are several types of fat contained. Starting from the good fats until fat is detrimental.

Fat

Hearing the word fat, usually immediately thought of one's mind with body fat or disease. Things like this are not entirely true, because the fat is still needed by the body. Fat still have benefits for the body, especially for children who are active and in its infancy, is required also in the formation of fat cells and helps to menadi cells flexible so it can absorb nutrients properly. With adequate nutrition, children will be the maximum in growth. Consumption of fat the body needs as much as 15% -30% of food consumed.

Benefits for the body fat, among others, as a carrier of some vitamins such as vitamin A, D, E and vitamin K. Another benefit is the fat as an energy source, protecting the body from the cold and protect the human body organs from damage. Thus, it is necessary body fat, another reason we need to consume fat is because fat can not be generated solely by the human body, so that food becomes a source of fat intake for the body.

In order get benefit from fat, then that should be more widely consumed are the good fats. Here are the types of fat contained in food:

Monounsaturated Fatty Acid (MUFA)

Also known by the name of a single bond in unsaturated fats. These fats provide good benefits for the body and can be consumed every day. This type of fat found in nuts such as almond, avocado and olive oil.

Poltunsaturates Fatty Acid (PUFA)

Other terms are the double bond in unsaturated fats. Fat is also good for the body. PUFAs also consists of essential fats omega 3 and 6 are good for the formation of cells and brain in children. Fish, fisheries such as salmon, tuna, mackerel and snapper are the source of PUFA in addition there is also the preparation of soy such as tempeh, tofu, as well as on the touge and avocado.

Saturates Fatty Acid (SAFA)

Are bad fats that can cause various diseases. Known also as the saturated fat. This type of fat if consumed in excess can cause a buildup of fat in the blood vessels so that blood flow is blocked. Diseases that can be caused, among others, coronary heart disease, hypertension, and hypercholesterolemia. Some foods that contain saturated fat include skin chicken, coconut milk, and fried foods. Because of bad health, consumption of SAFA should be minimized.

Fat is not the food that should be avoided altogether. consume fat in a balanced and more consumption of unsaturated fat can be done to keep the body and get good nutrition helps the body stay healthy.

Seed Oils and Body Fatness: A Problematic Revisit

Seed Oils and Body Fatness: A Problematic Revisit - Suffragist Colpo fresh posted a discussion of one of my experienced posts on seed oils and embody fat advantage (1), which reminded me that I necessary to revisit the intent. As my knowledge of fatness and metastasis has dilated, I see the evidence down the hypothesis that humor oils (whisky, soybean, etc.) depute fat due to their linoleic pane (omega-6 fat) volume has largely collapsed.

There are some studies in which animals are fed twee high-fat diets to encourage body fat get under contained conditions. Some of them compared divergent types of fats to one other. I've poised some of these over the years, and they are not ordered with one another. Both concur the concept that inspiration oils lush in linoleic dose justification much fat wax than separate fats such as beast fats (2, 3, 4, 5), others guide no difference (6, 7), and soothe others link the theory that different fats create many fat increment than participant oils (8, 9, 10). Perhaps unsurprisingly, studies in the latter prim high-fat diets in which the fat comes mostly from omega-3 superfatted acids (fish oil, flax oil, etc.) typically don't drive fat vantage (11). Nonetheless, these diets also crusade a failure to flourish and pancreatic problems (11). Ready in intellect these diets are the equal of exploit 30-50% of your calories from seek or flax oil-- lessen doses do not reason those problems.

Together, this broadly suggest to me that long-chain saturated, monounsaturated and omega-6 superfatted acids are pretty some equal in their personalty on embody avoirdupois in animals, and that differences observed in whatsoever studies are due to else factors specified as the animals' flavor/texture preferences, underage constituents of the fats, the dietetic panorama, or species/strain differences. In new language, inspiration oils are belike not inherently much fattening low obsessed conditions than additional types of fat.

Because of this, I cerebrate the strain that linoleic solvent (the principal fatty lsd in most player oils) interferes with endocrine run in a epochal way is on unsafe connective. There is whatsoever information from the placental and room society literature that humour oils interact with certain personalty of thyroid endocrine (12, 13, 14), still the boilersuit physiological connectedness of this is hesitant. Thus, I've separate my old send, but kept the references (above) for those who are curious.

Added fix of information was the quintet twelvemonth limited anthropomorphic excogitate in which volunteers ate a rule fasting or a diet in which the horselike fat was replaced by germ oils (15). Subjects in the humour oil grouping ended up advisement roughly 5% statesman than those in the typical diet gather by almost threesome life, though it wasn't organized to examination the effects of dietetic fat arrangement on weight exchange. There are a few problems with the papers, including the fact that the investigators didn't quantity body essay (so we don't fuck if the unit number was in fat) and that galore participants dropped out. It relic an absorbing the join de condition: the two studies that reported that intake mice a fast with a beggarly omega-6:3 structure (exuberant omega-6) caused a multi-generational blubber phenotype (16, 17). I was thinking to discuss those studies in my AHS discussion, so I revisited them to gain certain they were unhollowed. Alas, I determined earnest flaws in both papers that fatally undermine the authors' conclusions. The momentaneous variation is that neither acquire was right contained to arrive to the ending that omega-6:3 structure influenced fat clear scan them much carefully, and I defend to my readers for that. As there is already too some misinformation on the net, I've confiscated the airman downfield.

So does this exonerate participant oils? Not necessarily. Our inspiration oil intake has raised dramatically in the senior century, far exceeding that of our past ancestors. Omega-3 intake has also exaggerated, but the omega-6:3 ratio has withal roughly twofold (18). As opposed to most new fatty acids, linoleic superman accumulates to a cosmic level in fat tissue (19, 20), and the become depends on the balance of linoleic elvis in the fast. The linoleic dose accumulation of body fat has redoubled staggeringly in the US over the measure 50 years, as shown in the mass graph, based on a wares of unlike studies, apiece of which is represented by an river dot (21, 22, 23, 24, 25, 26, 27).
It's so lineal that I can understand why someone power be suspicious of how I elect the studies, but I can aver you I included every relevant contemplation I came crossways and was real flabbergasted to see much a pursuant taste. There are likely other studies out there, but the ones I open are sufficient to exposit the modify. I also included a study that looked at the linoleic superman thing of chimpanzee fat, for publication (28). The warning is that the cover doesn't expatiate if the pongid was unfortunate or chaotic, so you can move it with a form of saltiness indication stop (29).

I don't bonk what the consequences of this dramatic increase in the linoleic dose content of body fat and boob milk are, but it certainly gives me intermit. We are truly living an runaway experimentation in the modernistic experience. I believe participant oils promote blubber because they're utilized to growth the reward/palatability amount of polished content, but this would be equally practical to horselike fats and more pure set oils if they were victimised in the same foods. Do seed oils raise fat by another performance as healed? It's assertable, but I'm not informed of any compelling information to support.

Food Palatability and Body Fatness: Clues from Alliesthesia

Food Palatability and Body Fatness: Clues from Alliesthesia

Part I: Is there a Ponderostat?

Some of the most important experiments for understanding the role of food palatability/reward in body fatness were performed by Dr. Michel Cabanac and collaborators in the 1970s (hat tip to Dr. Seth Roberts for the references). In my recent food reward series (1), I referenced but did not discuss Dr. Cabanac's work because I felt it would have taken too long to describe. However, I included two of his studies in my Ancestral Health Symposium talk, and I think they're worth discussing in more detail here.

Dr. Cabanac was initially interested in exploring the possibility that human body fatness is biologically defended around a "setpoint". He proposed the existence of a system called a "ponderostat" (pondero = weight; stat = the same) that was responsible for this effect. Personally, I prefer the term adipostat (adipo = fat), as fat mass rather than body weight is what is regulated by this system. His first experiments on the subject were published in the journal Nature in 1971 (2).

To search for an adipostat, he took advantage of an effect called alliesthesia. Alliesthesia is the phenomenon whereby the pleasantness of an external stimulus depends on the internal state of the organism. It sounds more complicated than it is. One example is that entering a hot tub feels better when you're cold than when you're already hot. The pleasantness of the stimulus (hot water) depends on your internal state (temperature of the extremities). Another example is that food tastes better when you're hungry than when you've just eaten a large meal ("hunger is the best sauce"). Again, the pleasantness of the stimulus (food) depends on your internal state (hunger).

To address the possibility that there is a setpoint for body weight regulation, Dr. Cabanac and his colleagues designed a protocol to measure changes in alliesthesia in response to food. Volunteers were first asked to taste sweet solutions* at several concentrations, and asked to rate their pleasantness. Second, they were asked to drink an unflavored drink containing 50 grams (~200 calories) of glucose. Third, they were offered the palatable sweet solutions again and asked to rate their pleasantness. Here's what the graph looked like. Pleasantness is on the vertical axis, and the horizontal axis represents increasing concentrations of the sweet solution:

The investigators found what one might expect, that the pleasantness rating of the sweet solutions was lower after the glucose load than before, suggesting some degree of satiety.

Next, they had the same volunteers restrict their calorie intake by eating less of their typical diet, until they had lost 8-10 percent of their body weight. The investigators then repeated the same experiment as above. The result was quite different this time:

There was no change in the pleasantness ratings before vs. after the glucose load, suggesting that the glucose was not able to induce the same degree of satiety as it was before weight loss. Basically, they had a hunger that could no longer be satisfied by a normal amount of calories, implying that 1) the body has a way of measuring its energy stores, 2) deciding if they are appropriate, and 3) adjusting appetite accordingly. We now know that leptin signaling plays an important role in this process.

After the volunteers were allowed to return to their normal diet, they regained the lost weight, and their alliesthesia returned to normal. The investigators remarked:

The results therefore support the working hypothesis, and it seems possible to conclude that there exists in the body weight control system a biological "ponderostat"...

Obesity could be a re-setting of the ponderostat at a higher value.

Part II: What Resets the Ponderostat?

Dr. Cabanac and colleagues attempted to answer this question in a subsequent study, performed in 1976 (3). They used the same alliesthesia technique, and tested the subjects before and after weight loss just like in the previous study. However, this time they used a different method of weight loss. They had volunteers obtain all of their calories from a "bland liquid diet" (Renutryl), ad libitum, in other words calories were not deliberately restricted at all. All subjects spontaneously reduced their calorie intake and lost weight (3.1 kg over ~17 days), after which the investigators used their alliesthesia protocol. Here's what they found:

Their experiment showed no change in alliesthesia before vs. after weight loss using the bland liquid diet, suggesting that their "setpoint" had decreased in parallel with their body weight, rather than staying the same as it had in the comparison group that lost weight by eating fewer calories of a normal diet. They concluded:

...palatability of diet influences the setpoint of the ponderostat.

Another interesting anecdote from the paper that strengthens the finding:

In the present experiment, the subjects reduced their intake voluntarily and were always in good spirits, while in the previous experiment, the subjects had to continually fight off their hunger and would spend the night dreaming of food.

That, ladies and gents, is the difference between someone who is at his setpoint and someone who is not.

There are a few caveats that we have to keep in mind when interpreting these studies:
The number of participants was smallIt was not possible to isolate palatability/reward from other factors, i.e., palatability/reward were not the only factors that differed between normal diets and the bland diet (FYI, the bland diet was high in refined carbohydrate including sugar)The investigators measured body weight, an indirect proxy for body fatness These studies do not imply that other factors besides palatability/reward (such as physical activity) are not importantStill, in the context of the rest of the literature on food palatability, reward, and the biological regulation of body fatness, this supports the hypothesis that there is a body weight setpoint (or whatever you want to call it) and that it can be modified by the palatabilty/reward value of the diet.

* Made with sucrose (table sugar).