We’ve known for two or three decades that we’re in the middle of an obesity epidemic. A third of the American public is obese — meaning they weigh at least 20 percent more than their ideal weight— while two-thirds are overweight. But the obesity epidemic is not just in wealthier countries like the United States,...Read More

Most of us have heard the phrase low immune system, but what does it mean, how is it measured, and what are its health implications?Read More