Tag Archives | hormone


Gender behaviors directly manipulated

Uncovering the individual genes that are directly influenced by testosterone and estrogen has allowed University of California, San Francisco scientists to manipulate individual behaviors in mice, such as sex drive, desire to pick fights, or willingness to spend extra time caring for their young. Explaining his work in the journal Cell, researcher Nirao Shah said […]

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No link between age and testosterone levels

A new study from Australia adds weight to earlier European research that found no correlation between men’s ages and their testosterone levels. The University of Sydney researchers speculate that poor health is the most likely contributor to reduced libido and fatigue in older men. The findings, presented at the The Endocrine Society’s 93rd Annual Meeting […]

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