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By Brian Alexander msnbc.com contributor updated 4/18/2008 9:57:22 PM ET In 1931, Dr. Paul Niehans opened Clinic La Prairie in Clarens, Switzerland. There he experimented with something he called “cellular therapy.” By injecting human patients with the living cells of fetal sheep, he promised, people could be rejuvenated, their body’s tissues literally made young again. La Prairie quickly gained an elite clientele. Actress Gloria Swanson, the King of Morocco, Saudi Arabia’s founder King Ibn Saud, Pope Pius XII and many wealthy Americans and Europeans flocked to Clarens for the treatments, buying into one of the most ancient hopes of man — restored youth. Niehans had joined a long line of would-be saviors who came before and after. Some transplanted monkey, dog or goat testicles into men, or their ovaries into women. Others touted various elixirs, like one called Gerovital, popular in the 1950s. In the 1980s and early 1990s, hopes were placed on dietary supplements like beta-carotene, often in massive amounts. Nothing worked. But not surprisingly, lots of people keep trying. According to the Freedonia Group, a Cleveland, Ohio-based market research firm, the market for anti-aging products exceeds $20 billion per year — and is growing at a rate of nearly 9 percent annually. Whether consumers are getting their money's worth, though, is still highly questionable.
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