Growth hormone, produced by the pituitary gland, plays a critical role in cell regeneration, growth, and maintaining healthy body tissue, including the brain and vital organs. While synthetic human ...

Human growth hormone (hGH) is linked to muscle mass, weight loss, and increased athletic performance. You produce hGH naturally, but you can also get injections of recombinant growth hormone (rhGH).

If you need one more reason to motivate yourself to be more physically active, you can add the exercise-induced hormone irisin to your list. In the past two years, scientists have discovered that a ...