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Age, race, gender, certain medical conditions—high blood pressure, diabetes, brain aneurysms, and heart diseases—smoking, and family history can raise your risk for a stroke.

Pneumonia can be very serious and even life-threatening. Vaccines can help prevent some types of pneumonia. Good hygiene (washing your hands often), quitting smoking, and keeping your immune system strong by getting regular physical activity and eating healthy are other ways to lower your risk of getting pneumonia.

Persons using assistive technology might not be able to fully access information in this file. For assistance, please send e-mail to: mmwrq@cdc.gov.

Encephalitis, inflammation of the brain, is caused by several different infectious and noninfectious entities. Encephalitis can be an uncommon complication of a common infection, such as infection with a herpes virus or with any of several vaccine-preventable disease viruses, or a predictable presentation of a rare pathogen, such as the ameba, Naegleria fowleri.

To screen for iron-deficiency anemia your doctor may order a blood test called a complete blood count (CBC). Prevention of iron-deficiency anemia includes consuming enough iron and controlling other medical conditions that are risk factors for iron-deficiency anemia.

Pneumonia occurs when certain bacterial, viral, and fungal infections cause inflammation in the air sacs, or alveoli, of the lungs. Some of the more common causes in the United States include Streptococcus pneumoniae or pneumococcus bacteria, the influenza or flu virus, and respiratory syncytial virus (RSV).

Your risk of pneumonia may be higher because of your age, environment, lifestyle habits, and other medical conditions.

Mitral valve prolapse is a condition in which the flaps of the mitral valve are floppy, or prolapsed, which can prevent the seal from forming, which results in a backflow of blood in the left atrium as blood is pumped through the heart.

Mona Marin, MD1, English D. Willis, MD2, Ann Marko2, Sonja A. Rasmussen, MD3, Stephanie R.

A fact sheet that summarizes the results of studies about cruciferous vegetables and cancer. Includes a list of cruciferous vegetables and dietary recommendations.