Food for Thought The World Health Organization estimates that 30 percent of new infectious diseases stem from bacteria, viruses, parasites, chemicals, and toxins that are introduced into food at some point during production. How much do you know about food safety? MORE FEATURES • The eight keys to losing weight • The art of playful parenting • How to feel better about your body • Gearing up for ski season • Junk food heaven -- or hell?

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• Getting Tough on Bullying • Autumn Babies More Prone to Asthma • ADHD Medications Don't Pose Cancer Risk • Aquarobics May Help Ease Labor • Iressa as Good as Chemotherapy for Lung Cancer See all the news Noticias en Español

Q: How Do You Maintain Your Weight?     A. Diet -- I cut down on dessert to lose a few pounds     B. Exercise -- I hit the gym harder if I'm feeling heavy     C. Both -- it's a constant struggle     D. Neither -- my weight stays pretty constant See past polls