A handful of genes that control the body's defenses during hard times can also dramatically improve health and prolong life in diverse organisms. Understanding how they work may reveal the keys to extending human life span while banishing diseases of old age
In government laboratories and elsewhere, scientists are seeking a drug able to prolong life and youthful vigor. Studies of calorie restriction are showing the way
More than half the foods in U.S. supermarkets contain genetically modified ingredients. Have they been proved safe for human consumption?
Are genetically modified crops an environmental dream come true or a disaster in the making? Scientists are looking for answers
Dietary guides introduced in 1992 and 2005 have led people astray. Some fats are healthy for the heart, and many carbohydrates clearly are not
Even the meat and potatoes are being reinvented: the meat could come from a test tube, and the potatoes could ward off cholera
Eating disorders cripple--literally--millions of young women, in large part because treatments are not always effective or accessible
Three decades of research shows that drinking small to moderate amounts of alcohol has cardiovascular benefits. A thorny issue for physicians is whether to recommend drinking to some patients
Eating less--while maintaining adequate nutrition--is a recipe for longer life in many animals. Might it help humans as well?