Health

Fitter legs linked to a 'fitter' brain

Researchers at King's College London have found that muscle fitness as measured by power in the legs is strongly associated with an improved rate of ageing in the brain.

Psychology & Psychiatry

The biological origins of sexual orientation and gender identity

Male? Female? The distinction is not always clear. Exploring the scientific evidence for the biological origins of sexual orientation and gender identity must continue to both enhance patient care and fight discrimination.

Genetics

Owning a dog is influenced by genetic make-up

A team of Swedish and British scientists have studied the heritability of dog ownership using information from 35,035 twin pairs from the Swedish Twin Registry. The new study suggests that genetic variation explains more ...

Psychology & Psychiatry

Gender 'nonconformity' takes mental toll on teens

(HealthDay)—American teens whose behavior, appearance or lifestyle do not conform to widely held views on what it is to be a "normal" male or female face a high risk for mental distress and drug abuse, new research warns.

Psychology & Psychiatry

Transgender kids show consistent gender identity across measures

A study with 32 transgender children, ages 5 to 12, indicates that the gender identity of these children is deeply held and is not the result of confusion about gender identity or pretense. The study, led by psychological ...

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