If a whiff of cigarette smoke makes you feel ill, your instincts are right. It doesn't take much secondhand smoke to cause breathing difficulties — even if you don't notice them.

If you're finding it hard to rouse your teen from bed in the morning, you're not alone. Excessive sleepiness appears to be a trend among teenagers.

More boys than girls have an autism spectrum disorder ( ASD ). It is not clear why this is the case, and researchers are trying to understand if ASD affects the sexes differently.

Many factors influence individuals' weight. The same is true for children. Preventing obesity is easier when we know what factors increase a baby's risk of becoming overweight.

With America well into football season, the clashing of helmets has led to some major damage and blows to the head. But high school football players aren't too upset about it.

Parents have to handle all kinds of issues with their kids. Here is a helpful guide to positive parenting techniques to help keep kids on the right track.

Brain volumes are smaller in people with alcohol dependence. The good news is that pretty quickly after putting down the bottle, the brain regrows some of that volume.

A migraine headache can knock you flat — and that's for an adult. Imagine how migraines might affect children, especially when it comes to school.

Lighting up in a restaurant or a bar affects more than your own lungs. The secondhand smoke is inhaled by those around you as well — unless you live in an area with smoke-free legislation.

Mild cognitive impairment (MCI) is a loss of memory and thinking skills, and it can progress to dementia in some people. But, we don’t know why some people with MCI remain stable.