Seasonal variation of salivary testosterone in... [Physiol Behav. 2011] - PubMed - NCBI - 0 views
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Nathan Goodyear on 15 Oct 12interesting study that showed that testosterone levels in men and women fluctuate seasonally. The highest levels are found in the fall for both sexes, but lowest during the summer. Interestingly, birth control eliminated these seasonal variations and resulted in a "flatter seasonal testosterone profile". So, maybe mean cycle, but on a much different time scale? Interesting thought.