Anti-aging addresses how to prevent, slow, or reverse the effects of aging and help people live longer, healthier, happier lives. It includes scientific research and applications in genetic engineering, tissue engineering, and other medical advances, e.g., finding treatments and cures for Alzheimer's disease. It includes anti-aging psychology, e.g., coping skills for resiliently handling change, stress, and aging. Life extension is the part of anti-aging focused on living as long as possible.

The anti-aging marketplace includes nutrition, physical fitness, skin care, hormone replacements, vitamins, supplements, and herbs. Alternative medicine and holistic approaches have often been an incubator for approaches initially shunned by traditional medicine.

Leading sources of anti-aging information include the Life Extension Foundation (focusing on research and supplements), the American Academy of Anti-Aging Medicine (focusing on anti-aging physicians and cutting edge treatments), Andrew Weil (focusing on alternative medicine, holistic health, and herbal supplements), the Chopra Center for Wellbeing (focusing on mind-body medicine and integrating Eastern and Western medicine), and the Ageless Lifestyles Institute (focusing on anti-aging psychology).

Today, there are many cosmetics products and treatments on the market promoting skin-anti-ageing.