Hormone levels in both men and women diminish with age. This can lead to poor health outcomes, including premature aging and sexual dysfunction. Testosterone replacement in men is a beneficial treatment particularly during the andropause years. It can improve libido, energy, ability to focus, mood and sexual function. In women, the levels of estrogen, progesterone and DHEA are optimized for the treatment of infertility. The replacement of these hormones can also help relieve night sweats, hot flashes, manage weight gain, insomnia and many other peri- and menopausal symptoms.