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Human growth hormone (HGH): Does it slow aging?

What are the risks of taking human growth hormone if you don't need it?

Human growth hormone might cause a number of side effects for healthy adults, including:

  • Carpal tunnel syndrome
  • Increased insulin resistance
  • Swelling in the arms and legs (edema)
  • Joint and muscle pain
  • For men, enlargement of breast tissue (gynecomastia)

Human growth hormone might also contribute to conditions such as type 2 diabetes and heart disease and possibly an increased risk of some cancers.

Some research suggests that side effects of human growth hormone treatments might be more likely in older adults than in younger people. Because the studies of healthy adults taking human growth hormone have been short term, it isn't clear whether the side effects could eventually dissipate or become worse.