Fo-ti is a root herb from traditional Chinese medicine that has been used for centuries as an anti-aging tonic, and has shown promise in limited Western-style analyses. Interest has been held back by reports of liver toxicity, but there is some indication that the benefits can be separated from the toxic effects. In my readings, I found anecdotal evidence for rejuvenation plus one older study of impressive life extension in quails. I also found many more recent studies documenting beneficial biochemical effects which may be counted indirect evidence that makes life extension more credible. There were two clinical trials, both
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