You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is The MOST abundant source of ghrelin is: and explain in detail?
Ghrelin is a 28 amino acid peptide mainly secreted from stomach and the most abundant source is gastric fundus. It also produced from intestine, pancreas, pituitary, kidney, placenta. ACTION: It increases growth hormone secretion It increases food intake It increases weight gain Ref: Sleisenger and Fordtran's, Edition-9, Page-8.