ghrelin

In fact, fasting can help develop brain cells and enhance the brain, helping to remember longer.

New weapon in the fight against obesity -

How to diet and how much exercise to really change your body weight

A new anti-obesity vaccine by restraining hormones that stimulate ghrelin appetite, leading to reduced intake of food and increasing calorie consumption in mice, has been studied

In contrast to the many dieters' laments, hunger can make you happy. Or at least it can be an evolutionary motivation to help you find meals instead of becoming meals.