I hate poachers and I love animals, but this guy I hard not to love and he does make a good villain. Utterly cruel and psychotic, he loves killing and is greedy. In fact, he's so psychotic that he attempts to feed Cody to the crocodiles when he no longer has use for him.
The first is leptin, which is a hormone secreted by your fat cells that acts as an appetite suppressant. Leptin levels peak when you fill up on food. So, when you eat a lot, your appetite goes away. If you ever said, 'I am so full I couldn't eat another bite,' then in that moment, your body was flooded with leptin.
Ghrelin is a hormone produced by specialized cells that line the stomach and the pancreas. In the stomach, cells that secrete ghrelin include the P/D1 cells in the fundus or upper part of the stomach and in the pancreas, ghrelin secreting cells are called epsilon cells.f the ventromedial hypothalamus is removed, feeding increases, leading to weight gain and severe obesity. A hormone that counteracts the effects of ghrelin is leptin, which is produced by the fat or adipose tissue in the body. Leptin induces satiation or a feeling of fullness after a meal.