COVER
Love, Sex & Health
Sex arouses fascination and controversy, but it also plays a key role in mental and physical health. In a special issue, TIME explores where science and Cupid meet
BIOLOGY
MATING: Procreation is only one reason we are hardwired for sex 62
SCIENCE OF LUST: How a host of biochemicals fuel the sex drive 68
AND IT'S GOOD FOR YOU TOO: A healthy sex life may lead to a healthier life overall 76
MIND GAMES: Love feels like it stems from the heart, but what's going on in the brain? 80
BEHAVIOR
ANIMAL URGES: Nonhuman sex...