Have you ever experienced a sleepless night followed by a day when no matter what you ate, you never felt full or satisfied? If so, then you have experienced the workings of leptin and ghrelin.
Leptin and ghrelin work in a kind of "checks and balances" system to control feelings of hunger and fullness, explains Michael Breus, PhD, a faculty member of the Atlanta School of Sleep Medicine and director of The Sleep Disorders Centers of Southeastern Lung Care in Atlanta. Ghrelin, which is produced in the gastrointestinal tract, stimulates appetite, while leptin, produced in fat cells, sends a signal to the brain when you are full. Source: WebMD
So, why we are tempted to eat padahal, xder la lapa pon. (perut mintak nasik). This is due to, in this particular case, GHRELIN. When this hormone is produce, it will triger all our sences, making our senses, much more alert to food. We will become too teruja with food because ghrelin 'told' the brain that 'I'm Hungry!'. So, as our body works with the instruction from the brain..duh.. we will do lah.. as instruct by our dear brainy..
LEPTIN in the other hand, works the other way around. It tells your brain, 'I'm full'. So, definately you won't want to eat right?
So, what is the relation between sleep and ghrelin and the counter-attack hormone, leptin?
When you don't get enough sleep, leptin level in your system will go down, which mean, you won't feel as satisfied after you eat. Lack of sleep also menyebabkan ghrelin level in your system rise, which means, your appetite is stimulate, you will feel hungry.
Therefore, with the two effects combined, you will tend to overeating, which in turn may lead to weight gain.
0 comments:
Post a Comment