Love, Sex & Health: Biology: The Power of Love

How does our love life shape us--mind, body and soul? Let us count the ways

One thing you can say about lust, it sure shows up early. Talk all you want about the honey-sweet face of an innocent newborn, the fact is, from the moment we appear in the world, we're not much more than squalling balls of passion. Our needs aren't many: to sleep, to eat, to be held, to be changed. Satisfy these, and there won't be any trouble. Fail to, and you will hear about it.

Of all the urges that drive us, it's the passion to be held that makes itself known first. If a baby is startled fresh from the womb,...