Medications

Don't take chances: Why doxycycline is a great bet against STIs

If taken within 72 hours of condomless sex, the common antibiotic doxycycline drastically reduces the risk of gonorrhea, syphilis and chlamydia among transwomen and gay, bisexual and other men who have sex with men, a recent ...

Health

Could you be short on vitamin D?

(HealthDay)—You'd think vitamin deficiencies would be rare in the United States, but many people are running low on vitamin D, and it's a serious health threat.

Health

Pyrethroid pesticide exposure appears to speed puberty in boys

Environmental exposure to common pesticides may cause boys to reach sexual maturity earlier, researchers have found. They will present their study results Saturday at the Endocrine Society's 99th annual meeting in Orlando, ...

Genetics

Cultural differences may leave their mark on DNA

A UC San Francisco-led study has identified signatures of ethnicity in the genome that appear to reflect an ethnic group's shared culture and environment, rather than their common genetic ancestry.

Neuroscience

New insights into nicotine's effect on reward pathways

Northwestern scientists have discovered new mechanisms used by nicotine to manipulate the brain's reward pathway—findings which could inform the development of future anti-addiction therapies.

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