Life expectancy, also known as an experiment of anti-aging medicine, geriatrics and Gerontology, refers to the slowing or reversing aging attempted, extend the maximum and average life expectancy.Some researchers in this regard, and the life extension ” ” or longevists (who want to implement a longer life for themselves) thinks that the breakthrough in the future, the Organization revival and stem cell repair, replacement, molecules and organs, such as artificial organs or xenotransplantations) will ultimately make humans have an infinite life, through the complete rejuvenation to a young State.

Sale assumes that the anti-aging products, such as nutrition, physical fitness, skin care, hormone replacement vitamins, supplements and herbs has become a lucrative trade in the United States market to create some 500 billion annual revenue. medical experts pointed out that the use of this product has not been proved that affects the aging process, many claim anti-aging medicine advocate sharply criticized by medical experts, including the American Medical Association. the question of bioethics home whether and how to human life should be extended.