A to Z Health Guide 2007

G - M
BSIP / PHOTOTAKE

Hormone Therapy

Article Tools

While the back-and-forth over the risks and benefits of hormone-replacement therapy at menopause is enough to give women whiplash, each study is providing doctors with a better idea of exactly how — and when — supplemental hormones can help. The latest analysis of data from the Women's Health Initiative shows that women who have had a hysterectomy and use estrogen-only therapy have less buildup of calcium plaques in their arteries than women who don't use the hormone. Not only does estrogen not hurt the heart, this study suggests, it may help it — at least for younger women, ages 50-59.

Science

What Makes Us Moral

Morality and empathy are writ deep in our genes. Alas, so are savagery and bloodlust. Science is now learning what makes us both noble and terrible—and perhaps what can make us better

Interactive

The Morality Quiz

Here are some of the dilemmas used to study human morality. Take this quiz to see how you compare to other TIME.com readers

A-F

From Autism to Flu

G-M

From Gardasil to Migraines

N-S

From Naps to Suicide

T-Z

From Tuberculosis to Zoledronic Acid