Food allergies can show up in many ways. For young children, a dairy allergy may show up as congestion in the ear, nose or throat.

Do laws regarding vending machines and fast food carts in schools make a difference in whether teens gain weight? That's what a group of researchers sought to find out.

Experiencing abuse as a child means more than a higher risk of mental illness. Researchers are learning that abused children are at risk for various long-term physical issues as well.

Insufficient sleep can make it harder for your body to fight illnesses, but it can also make it easier for your body to get sick in the first place.

When California had the highest number of pertussis cases in six decades in 2010, public health officials took notice. Pertussis (whooping cough) is especially dangerous for babies.

Saying "thank you" is likely one of the earliest behaviors parents teach their children. If kids can maintain gratitude through adolescence, they may have better overall mental health.

Being obese and pregnant can carry a range of risks to the mother during pregnancy, but it also has consequences for her baby, in the short-term and the long-term.

Children with autism spectrum disorder (ASD) and other medical conditions need care for both, and new research suggests that ASD treatments may need to take other medical problems under consideration.

Growing up is hard to do - especially if you're a girl. While mood swings and emotional highs and lows are all a normal part of adolescence and hormones, major depression shouldn't be.

Children who fall into the "very obese" category are already suffering from at least one heart disease risk factor such as high cholesterol or hypertension.