A trainer at the gym said I should be taking creatine as a man in my 50s, while a colleague, very fit and competitive, says there’s no need for performance enhancers that will bloat me and damage my kidneys. Who is right?

If only life were that simple. It’s unbelievable how we coalesce around dogma. Any anthropologists reading this know why we are hard-wired to pick a tribe and die on the front line defending it?..

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