Hi Dr. Rassman,
I am a 38 year old male with recent thinning at the vertex. I’ve been training all of last year for the LA Marathon with weight and long distance running. Would all the extra testoterone from working out have an effect or speed up the process of mpb? Thank you.

I doubt your exercise and training will result in the progression of MPB, even with a slight elevation in your testosterone level. If you are genetically predisposed to lose hair, you will lose hair. Even if it has a slight effect would you do anything differently? Would you not run a marathon or not exercise and become a couch potato? Perhaps a couch potato with more hair?

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