Quitting cigarettes can only do a body good, but do former smokers ever fully recover from years of addiction?
TIME asks MIT professor Matt Wilson why emotionally charged memories stick with us longer than the mundane
New drugs are routinely tested on mice and other animals before humans. But why are some results translatable to humans and some not?
Consultation: Sleep expert Daniel Kripke reviews the research and says 8 hours is not necessarily best for all
TIME asks a prominent bioethicist whether antidepressants should be more widely available
Walter Kukull, of the U.S. National Alzheimer's Coordinating Center, talks about what causes the disease and how researchers could reduce people's risk
Infant mortality rates are usually an indicator of a country's overall health. So why are the rates in the U.S. so high?
As the rate of childhood obesity continues to climb, the question is: What is the risk to kids' health in adulthood? The CDC's David Freedman responds
One in five Americans dutifully gets a medical check-up every year, but what good is it doing?
Consultations: Dr. De-Kun Li of Kaiser Permanente on what pregnant women should know about caffeine