Vitamins are essential to our health, and we can get most through our diets. Standards for dietary minimums help prevent deficiency diseases, but little is known about whether it's possible to consume too many vitamins.

Many people have misconceptions about what addiction is and is not. A noted British journalist explains how these myths fuel the war on drugs, and alternatives that might curb addiction and drug trafficking.

A longtime food market researcher discusses why we choose the foods we eat.

Experts explain the brain chemistry of food addiction, how it is virtually identical to the chemistry of drug addiction and alcoholism, and what it means for the nation's fight against obesity.

Studies are showing that people who train hard and long at running have death rates similar to couch potatoes. Experts discuss how much exercise is enough and how to make the most of light exercise.

The US once led the world in proportion of women in the workplace, but that number has declined the last 15 years. Experts explain the factors that are leading women to quit their jobs and stay home.

An expert discusses his study of traditional native societies, which shows how human genetics have not adapted to change.

At some point in their careers, 35 percent of workers will be bullied badly enough to affect their health. Experts discuss the reasons for workplace bullying and how to prevent it.

Hospitals and clinics often have to stock a huge variety of bandages to address different kinds of wounds. Now a high-tech "smart dressing" can replace them.

Measles is more widespread than it has been in years. The current measles outbreak in several states has prompted questions about the responsibility of parents to have their children immunized against vaccine-preventable diseases. Experts discuss this "social contract" cited by courts since colonial times, and why highly-contagious measles is a good test case for the rights and responsibilities of parents.