Testosterone
levels peak at approximately 0730 and hit their low point at approximately 1930. So, if the time of sample
collection varies (as it usually does) your results may mean nothing, despite attempts to control for other
variables--like stress, food ingestion, psychotherapeutic drug use, etc. To attempt to show individually significant
changes would be very difficult. That's why researchers try to involve as many study participants as they can
find/fund, and also attempt to control the variables. Simply put, DO NOT TRY THIS AT HOME! Or, if you do, realize
that you might need to read a few books on the topic before you can interpret the results, which are virtually
meaningless at the individual level. On the other hand, it's not a bad idea for men over 50 to have their
testosterone level checked if they're having specific symptoms like fatigue, low sex drive, etc. Studies are now
finding many more instances of low testosterone levels than were predicted only a few years ago.
JVK
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