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Human growth hormone, or HGH is a substance produced by the body that causes growth during youth. It's level declines as people age, so it was thought that increasing the level via injections would help reverse aging. The real results in controlled studies have been pretty minor, some minor muscle gains, but that's about it. The negative effects are that you can become disfigured, since you'll start growing again (resulting in strangely pulled out skeletal structures) and your wallet will lose a significant amount of weight, as the treatments are extremely expensive.
First answer by Tymothy. Last edit by Tymothy. Contributor trust: 541 [recommend contributor]. Question popularity: 42 [recommend question]
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