[1][2] A substantial portion of the attention of the movement is on the possibilities for life extension, but there is also interest in techniques such as cosmetic surgery which ameliorate the effects of aging rather than delay or defeat it.
[5] Other scientists and significant contributors to the movement include molecular biologists, geneticists, and biomedical gerontologists such as Gary Ruvkun, Cynthia Kenyon, and Arthur D. Levinson.
It is not approved for use in healthy aging patients, though the restriction is occasionally sidestepped by means of a diagnosis of some injury, organic condition, or adult-growth-hormone deficiency[11] which may have resulted in reduced secretion of the hormone.
[16] Hormone therapy is not suitable or advised for treating cardiovascular disease, dementia, or for preventing cognitive decline in postmenopausal women.
[22] Caloric restriction is a phenomenon introduced in anti-aging techniques which focuses on depletion of calories and taking the right amount of nutrients necessary for growth.
[27] Long term CR in older animals results in stem cell function similar to that of the younger groups.
A substantial fraction of older people, taking their cue from alternative medicine, purchase and use herbal supplements and other products which promise relief from the incidents and dangers of aging.
[32] A study of the commonly-used supplements and hormone treatments published in 2006 in the Cleveland Clinic Journal of Medicine showed that none of them are effective for extending life.
Common criticisms of the idea of life extension are fears it will cause the world to be more overpopulated; however, de Grey counters that by saying that since menopause would also be delayed, women could wait longer to have children and, thus, the rate of growth would actually decline as a result.