Aerobic exercise
Learning Center
Macrocytosis: What causes it?
Enlarged red blood cells (macrocytosis) can be due to many factors.
Lung nodules: Can they be cancerous?
Lung nodules are common. Most aren't cancer. Find out what tests might be recommended if you have a lung nodule.
Low blood sodium in older adults: A concern?
For older adults, low blood sodium, known as hyponatremia, can cause death if left untreated.
Limbic-predominant age-related TDP-43 encephalopathy (LATE)
LATE causes symptoms similar to Alzheimer's, but may progress more slowly.
Kids and exercise: How much activity do they need?
You know your kids should exercise, but how much? Find out and get ideas for helping children and adolescents be more physically active.
Isolated systolic hypertension: A health concern?
Both the top and bottom numbers in blood pressure readings hold clues about your health. But if just the top number is high, it might be a concern.
Iron deficiency in children: Prevention tips for parents
Learn how much of this key mineral your child needs and what the health risks of not getting enough are.
Hyperinsulinemia: Is it diabetes?
Hyperinsulinemia often is associated with type 2 diabetes.
How your brain works
Which part of your brain does what? Take a tour.
How you hear
Your ears enable you to gather and interpret sounds from the world around you.
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