Amy B. Killen, Humanaut Health, HOP Amy B. Killen is a leading longevity and regenerative physician, founder, and speaker. Dr. Killen is the founder and CEO of the Human Optimization Project (HOP), a longevity-focused nutritional supplement company. She co-founded Humanaut Health, a longevity clinic franchise, and Reputable, a health tech data aggregator. She and her partner, Dr. Adelson, pioneered the Full Body Stem Cell Makeover, where she injects stem cells into the skin, hair, and sexual organs. Or, as a headline in The Times London said about her, “Can't get no satisfaction? This woman can help (She's a doctor)â€'.