A to Z Health Guide 2007

T - Z
COLLECTION CNRI / PHOTOTAKE

Zoledronic Acid

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For most folks, drinking plenty of milk and getting enough vitamin D and exercise are sufficient to keep bones strong. But for some people, more bone-building is needed. Zoledronic acid, marketed as Reclast, is the first once-a-year treatment approved for osteoporosis in postmenopausal women. It can also be prescribed for both sexes to treat the bone disorder Paget's disease. But you might not want to jump too fast for the annual IV infusion. Like most drugs, Reclast comes with side effects, and the fda is reviewing data showing that it and other osteoporosis medications may increase abnormal heart rhythms.

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