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Dehydration What is dehydration? Dehydration means that you don’t have enough water in your body. The human body normally contains a lot of water. In fact, 50% to 60% of your body weight comes from water. It helps keep your body healthy and working well. Mild dehydration can

Navigating Life After a Loved One's Suicide Grief is complicated. You may have many different feelings at once. It can be long-lasting, too. Grieving the death of someone who died by suicide is in many ways like other forms of grief. But you may have different challenges and

Fever What is a fever? A fever is a body temperature that is higher than normal. It often means there is an abnormal process occurring in the body. Exercise, hot weather, inflammation, infection, vaccines, and many other things can make body temperature rise. What causes a fever

Varicose Veins What are varicose veins? Varicose veins are enlarged, twisted veins. They can happen anywhere in the body. But they are more common in the legs. Varicose veins are not considered a serious health problem. But they can be uncomfortable and can lead to more serious

Uterine Fibroids What are uterine fibroids? Fibroids are firm, dense tumors made of smooth muscle cells and fibrous connective tissue. They develop in the uterus. About 1 in 5 to 1 in 2 women of reproductive age have fibroids, but not all are diagnosed. Fibroids are very common

Menstrual Cramps (Dysmenorrhea) in Teens What are menstrual cramps in teens? Menstrual cramps are severe, painful cramps that occur during a period. There are two types: Primary. This type starts soon after the first menstrual period. It's usually lifelong. But it may get better

COVID-19 What is COVID-19? COVID-19 is an infectious disease that most often causes a respiratory illness. You may hear it called COVID or coronavirus disease 2019. It's caused by a virus called SARS-CoV-2. There are many types of coronaviruses. They are a common cause of

Allergens: Dust and Dust Mites What are dust allergens? Dust allergens are substances found in dust. They may include: Fabric fibers. Lint. Feathers. Stuffing materials. Animal protein (dander, saliva, urine, and body oils). Bacteria. Mold and fungus spores. Food particles

Prematurity What is prematurity? A baby born before 37 weeks of pregnancy is considered premature or born too early. Other terms used for prematurity are preterm and the nicknames "preemie" or "premie." About 1 in every 10 infants are born prematurely. Twins and other multiples

Phobias in Children What are phobias in children? A phobia is an excessive fear of a certain object or situation. It's a fear that lasts for at least 6 months. It is a type of anxiety disorder. These are some different types of phobias: Specific phobia. A child has anxiety when