Fitness basics
Learning Center
Arteriosclerosis / atherosclerosis
Learn about the symptoms, causes and treatments for hardening of the arteries.
Anxiety disorders
Learn the symptoms of this mental health condition, and ways to manage worry and fear that interfere with your daily activities.
Osteosarcoma
Learn about the symptoms and causes of this bone cancer that happens most often in children. Find out about treatments, including limb-sparing operations.
Hemochromatosis
This liver disorder causes your body to absorb too much iron from the foods you eat. Learn about symptoms, causes and treatment for this condition that usually runs in families.
Osteoporosis
Fractures associated with this bone-weakening condition can be life-altering. Good nutrition, regular exercise and medications can help.
Acute coronary syndrome
Know the symptoms, causes and treatment of this heart condition. The term refers to many conditions that cause sudden, low blood flow to the heart.
Diarrhea
Learn more about what causes this common digestive condition, and how you can treat and prevent it.
Klinefelter syndrome
This genetic disorder occurs when a male is born with an extra copy of the X chromosome and may result in low testosterone production and infertility.
Primary lateral sclerosis (PLS)
This motor neuron disease causes nerves within the brain to slowly break down. It causes muscle weakness primarily in the legs, arms and tongue.
Wolff-Parkinson-White (WPW) syndrome
This heart condition present at birth causes a fast heartbeat. Rarely, it can cause sudden cardiac death. Know the symptoms and how it's treated.
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