At this point we've read about the major forms of macro-nutrients, the two forms of metabolic process that your body can operate on, and the reason why these are crucial things to consider for survival. In terms of advice the scales are leaning fairly heavily toward a fat based diet program rather than one dependent on carbohydrates such as grains, flour as well as sugar.
Until now, we were concentrating mostly on the results of carbohydrates on blood insulin in your body. However now, we're going to check out a vital hormone that has just entered the limelight in nutritional science: leptin.
What's important about fat mice?
In 1950, research workers were in the process of raising lab mice for several features. One of the variants was an incredibly hungry mouse that would eat until it was physically not able to. All of these mice would gradually become obese, giving them the appropriate nickname of 'obese mice'.
It had taken over 4 decades until the secret of why the obese mice would eat so much was figured out. At Rockefeller University in 1994, a scientist known as Jeffrey Friedman managed to isolate a protein which, when injected to the obese mice, would help them to eat normally and get back to normal weight. This protein was a mix of 167 amino acids known as leptin.
The way that the hormone functions is by managing the body's hunger. Whenever you experience hunger, you will continue to eat until you are 'satisfied', however the quantity of food which will allow you to be satisfied depends upon the hormone. The reason obese mice ate the way they did was because they were genetically not able to either produce the hormone or perhaps not able to have functioning leptin receptors. So they kept eating to fulfill their hunger. This appears like an awesome science story but the applications to survival foods are huge.
Losing leptin sensitivity
Naturally, leptin is the ideal feedback loop to sustaining a proper body weight. It is produced by fat cells themselves, therefore in theory, having more fat cells can make a person feel less hungry. Fat levels will decrease to normal and no one would be at an unhealthy weight. But there are practically billions of human examples to demonstrate that it isn't the situation now.
The main reason this happens is leptin insensitivity. From having constantly high levels of the hormone, the receptors in the brain can not transmit when leptin levels are low or high. In essence, this is exactly what happened with the obese rats - with no capability to tell when they are satisfied they would eat till they could not. This would be devastating in a survival scenario, either causing unnecessarily high food consumption or being incredibly taxing psychologically from constant hunger.
Luckily, there is a remedy for this. Low carb diets have shown to restore leptin sensitivity in two methods. First, they reduce blood triglycerides which makes it a lot easier for the hormone to reach the brain. Second, they have the outcome of lowering bodyfat that plays a role in chronically increased levels. Additionally, many carbohydates like fructose and wheat have been shown to adversely affect receptors.
You decrease carbs, you lessen leptin insensitivity, you decrease hunger.
Until now, we were concentrating mostly on the results of carbohydrates on blood insulin in your body. However now, we're going to check out a vital hormone that has just entered the limelight in nutritional science: leptin.
What's important about fat mice?
In 1950, research workers were in the process of raising lab mice for several features. One of the variants was an incredibly hungry mouse that would eat until it was physically not able to. All of these mice would gradually become obese, giving them the appropriate nickname of 'obese mice'.
It had taken over 4 decades until the secret of why the obese mice would eat so much was figured out. At Rockefeller University in 1994, a scientist known as Jeffrey Friedman managed to isolate a protein which, when injected to the obese mice, would help them to eat normally and get back to normal weight. This protein was a mix of 167 amino acids known as leptin.
The way that the hormone functions is by managing the body's hunger. Whenever you experience hunger, you will continue to eat until you are 'satisfied', however the quantity of food which will allow you to be satisfied depends upon the hormone. The reason obese mice ate the way they did was because they were genetically not able to either produce the hormone or perhaps not able to have functioning leptin receptors. So they kept eating to fulfill their hunger. This appears like an awesome science story but the applications to survival foods are huge.
Losing leptin sensitivity
Naturally, leptin is the ideal feedback loop to sustaining a proper body weight. It is produced by fat cells themselves, therefore in theory, having more fat cells can make a person feel less hungry. Fat levels will decrease to normal and no one would be at an unhealthy weight. But there are practically billions of human examples to demonstrate that it isn't the situation now.
The main reason this happens is leptin insensitivity. From having constantly high levels of the hormone, the receptors in the brain can not transmit when leptin levels are low or high. In essence, this is exactly what happened with the obese rats - with no capability to tell when they are satisfied they would eat till they could not. This would be devastating in a survival scenario, either causing unnecessarily high food consumption or being incredibly taxing psychologically from constant hunger.
Luckily, there is a remedy for this. Low carb diets have shown to restore leptin sensitivity in two methods. First, they reduce blood triglycerides which makes it a lot easier for the hormone to reach the brain. Second, they have the outcome of lowering bodyfat that plays a role in chronically increased levels. Additionally, many carbohydates like fructose and wheat have been shown to adversely affect receptors.
You decrease carbs, you lessen leptin insensitivity, you decrease hunger.
About the Author:
Thank you so much for reading! Terrance Franklin writes about nutrition and survival on a variety of sites on the web. For more information on survival foods, be sure to check out survival foods. And for even deeper reading, follow the link at http://mysurvivalfoods.tumblr.com/
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