Caffeine intake is not associated with serum testosterone levels in adult men: cross-sectional findings from the NHANES 1999-2004 and 2011-2012.

David S LopezShailesh AdvaniXueting QiuKonstantinos K TsilidisMohit KheraJeri KimSteven Canfield

Published in: The aging male : the official journal of the International Society for the Study of the Aging Male (2018)

No linear association was identified between levels of caffeine intake and testosterone in US men, but we observed a non-linear association, including among racial/ethnic groups and measurements of adiposity in this cross-sectional study. These associations are warranted to be investigated in larger prospective studies.

Keyphrases

cross sectional
replacement therapy
weight gain
middle aged
insulin resistance
type diabetes
metabolic syndrome
physical activity
atomic force microscopy
smoking cessation
childhood cancer