As we age, the hormones we need to stay healthy decline. One of the most important hormones is the growth hormone (GH), also known as human growth hormone (HGH). Growth hormone plays a role in body composition (lean muscle), energy levels, cholesterol levels, immune function, and sexual performance. Certain nutrients may stimulate the natural release of GH in many people, including niacin (vitamin B3), and particularly amino acids, including L-arginine, L-lysine, L-glutamine, L-ornithine and L-glycine. 04007-D01AA
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