Health

Landmark study defines normal ranges for testosterone levels

A large study of more than 9,000 men has established harmonized reference ranges for total testosterone in men that when applied to assays that have been appropriately calibrated will effectively enable clinicians to make ...

Psychology & Psychiatry

Study charts development of emotional control in teens

In the midst of all the apparent tumult, intense emotion, and occasional reckless behavior characterizing the teenage years, the brain is, in fact, evolving and developing the neural circuits needed to keep emotions in check. ...

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