title_body: Effects of coffee consumption on testosterone production
upvoted_answer: In short, caffeine may increase "Sex Hormone Binding Globulin" which results decreased levels of testosterone in both men and women.
  
  However, I don't know how effective it is. Or if this decrease is serious and supported by many studies. I have encountered this study presents that caffeine's inverse effect on women testosterone level, which is somewhat related to osteoporosis as far as I can interpret.
  
  Please note that people who answer questions here are not professionals in the designated areas.