Sports nutrition
Learning Center
Easy bruising: Why does it happen?
Get the facts about easy bruising. Learn about causes and find out when it's a sign of a problem.
Performance-enhancing drugs: Know the risks
Learn about the health risks of doping in athletes.
Menstrual cycle: What's normal, what's not
Learn about how to track your menstrual cycles and what any changes may mean.
Alzheimer's stages: How the disease progresses
Alzheimer's stages — common behaviors as the disease progresses.
Heartburn or heart attack: When to worry
Chest pain? Learn the potentially lifesaving difference between heartburn and a heart attack.
Eating and exercise: 5 tips to maximize your workouts
Find out how your meals and snacks can affect your workouts.
Sexually transmitted disease (STD) symptoms
Learn about symptoms of some of the more common diseases that can be passed through sex.
Memory loss: When to seek help
Memory loss may result from typical aging, a treatable condition or the onset of dementia.
Diabetes symptoms: When diabetes symptoms are a concern
Diabetes symptoms can be subtle. Pay attention to the clues your body gives you.
Heart attack symptoms: Know what's a medical emergency
Watch for these heart attack symptoms.
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