What happens in your stomach when you're hungry?

The stomach secrete ghrelin a hormone triggering hunger, as the stomach stretches fullness is signaled. Hunger is actually a complex phenomenon the below site gives a good overview. read more

Though stomach growling is commonly heard and associated with hunger and an absence of food in the stomach, it can occur at any time, on an empty or full stomach. Furthermore, growling doesn't only come from the stomach but, just as often, can be heard coming from the small intestines. read more

If your body doesn't have enough sugar to supply the energy it needs, it begins to burn fat when you're hungry instead. Lowering your carb intake reduces the amount of stored sugar in your body, encouraging your body to burn fat when you're hungry. read more