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Older Americans taking shots of human growth hormone in an effort to turn back the clock will likely be disappointed.
As an anti-aging treatment, the hormones appear to offer few benefits but significant health risks, a review of the research finds.
Stanford University researchers came to this conclusion after analyzing 31 studies that included a total of more than 500 relatively healthy elderly people.
The only clearly positive effect found from taking the hormones was a slight improvement in lean body mass.
On the negative side, participants who took human growth hormones were significantly more likely to develop joint swelling and pain, and carpal tunnel syndrome.