Curry Power

An age-old seasoning could help combat Alzheimer's

Imagine that you’re living 3,000 years ago in a village in what’s now southern India. When you get sick or injured, you visit the healer, who most likely is a practitioner of the herbal medicine called ayurveda. For whatever ails you, you’ll probably get a treatment that includes a bit of bright, yellow-orange powder, the spice turmeric.