What is one effect of ghrelin on the body?

• A. It decreases appetite
• B. It increases fat storage
• C. It stimulates appetite
• D. It promotes muscle growth

Answer: (C)

Ghrelin is often referred to as the "hunger hormone" due to its crucial role in stimulating appetite. It is predominantly produced in the stomach and is released when the stomach is empty, signaling to the brain that it is time to eat. When ghrelin levels rise, it stimulates appetite and promotes food intake, contributing to the regulation of energy balance. This is why the correct option highlights its appetite-stimulating effect.

In addition, ghrelin also has other roles in the body, including influencing energy metabolism and promoting the release of growth hormone. However, its primary and most well-studied effect remains its ability to stimulate hunger, thereby driving food consumption.