Klotho – There May Be a Drug to Turbocharge Your Brain. Who Should Get It?
If true that it enhances healthy people, I wonder why we didn't  evolve to produce more of it? Why didn't mice?Maybe side effects? Maybe being too smart is an evolutional disadvantage on an individual level or in small groups? Maybe producing the hormone is too costly?Seems like too easy of a "hack" to improve such highly optimized systems such as humans or mice.