Lupus is a disease that causes the immune system to mistakenly work against the body's own tissues and attack healthy cells. Lupus can affect almost any organ. Symptoms of lupus — such as joint or ...

What Is Pneumocystis Pneumonia? Pneumocystis pneumonia (PCP) is a lung infection caused by a fungus. It's rare in healthy people, and usually affects those with a weak immune system.It's the most ...

Need a science project, or just looking for something fun to do? These experiments reveal the way your body works. Check with a grown-up first because some will require help from an adult.

Weaning is when a baby moves from breastfeeding to other sources of nourishment. Weaning your baby is a process that takes patience and understanding from both you and your child. When Is the Right ...

For most kids, body odor is part of growing up. Kids start to have body odor around the time puberty starts and hormones change. Usually, this happens when females are 8–13 years old, and males are ...

As kids grow from grade-schoolers to preteens, there continues to be a wide range of "normal" regarding height, weight, and shape. Kids tend to get taller at a pretty steady pace, growing about 2.5 ...

What Is Salmonella?. Salmonella is a bacteria (type of germ).Someone with a Salmonella infection (or salmonellosis) might have diarrhea, vomiting, fever, and cramps.With rest and plenty of fluids, ...

How did you learn how to ride your bike? Someone probably gave you a few lessons and then you practiced a lot. You can learn how to study in much the same way. No one is born knowing how to study. You ...

What Does the Heart & Circulatory System Do? If you've ever wondered how your heart works, this movie has the answer. And special thanks to the Fred J. Brotherton Charitable Foundation for supporting ...