Human growth hormone (HGH) can help healthy adults regain youth and vitality. Let's find out the answer to the question; Does human growth hormone slow down the aging process? Human Growth Hormone (HGH) Human Growth Hormone: Does HGH Slow Aging? Growth hormone promotes physical growth in childhood and aids in organ and tissue maintenance throughout life. A pea-sized gland in the brain's base, the pituitary gland, produces this hormone. However, over time, the pituitary gland slowly reduces the a