Teenagers aren’t allowed to drink because it’s dangerous. Not just accident-prone dangerous, but actual breakdown of the brain’s white matter dangerous.

So it's pretty clear that smoking while pregnant is a bad idea. But what if it's just those around you who are smoking? Does that affect unborn babies too? Possibly.

Serious gambling problems can destroy the life of a gambler and his loved ones. Researchers are now learning how to tell earlier on who might be more likely to develop a gambling problem.

It's challenging enough to raise headstrong toddlers. But toddlers and older kids whose mothers used cocaine during pregnancy? Their behavior can be especially difficult.

It's clear that heavy drinking while pregnant can harm a baby. But research has been less clear about whether only a few drinks makes a difference. Until now.

Most women know they are advised not to drink during pregnancy. They may not realize how much drinking while pregnant can deeply affect children's brains even years later.

Quitting smoking during pregnancy is thankfully becoming more common. But a lot of new moms go back to smoking within a year of giving birth. This is still dangerous for the baby!

There are 101 reasons not to smoke while you're pregnant. But here is reason #102: there's some evidence it might change the way your child's brain works later on.

It's pretty well established that smoking while pregnant leads to various negative health effects for your child. But even being around cigarette smoke can affect your unborn baby.

Many studies have looked at differences in children whose mothers drank while pregnant compared to kids whose moms didn't. But what about differences before the babies are even born?