Hormones control our food intake
We all need food to generate energy. Our body uses hormones that circulate in the blood to control our food intake.
Hormone levels change when we lose weight and are also the reason why most of us will regain the weight we lose.
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The hypothalamus coordinates the body's system that regulates food intake.
Whether you feel like eating depends on the balance of the activity between these two sets of neurons.
Studies found that diet-induced weight loss is associated with hormone changes that promote weight gain.
After weight loss, leptin levels will decrease. But ghrelin, GIP and pancreatic polypeptide will increase in circulation while PYY and CCK will lower. Most of these changes favour regaining lost weight. These hormonal changes seem to be present for at least one year after weight loss, leading to a constant increase in hunger.
Is a metabolic state. Think of being in or out of ketosis like the settings in a hybrid car; you can rely on gas or electricity to different degrees.
In ketosis, we rely on fat instead of carbs for energy and do so to such an extent that we start making ketones from fat.
Sleeping less has been associated with increased risk of obesity, and addition of body fat, as it affects the overall metabolism of the body, and can also affect our appetite.
Sleep duration is a problem for many adults, as they find sleeping the recommended seven to nine hours a night a challenge, given the hectic lifestyle and social commitments.
Hormones get released when we are hungry: NPY and AgRP from the hypothalamus, and ghrelin from the stomach.
Ghrelin levels tend to be higher in lean individuals and lower in people with obesity. It might be that high levels of insulin, needed to metabolize a high-carbohydrate diet, are inhibiting the production of ghrelin in people with obesity.
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