Healthy diets
Learning Center
Video: Colonoscopy
See what a doctor sees when you undergo an examination of your colon.
Video: Sentinel node biopsy for melanoma
Video shows sentinel node biopsy to determine whether melanoma has spread.
Video: Skin cancer — How skin cancer develops
Watch this video to see what melanoma and nonmelanoma skin cancers look like and how they develop.
Video: Endoscopy
An endoscopy allows your doctor to view your esophagus, stomach and part of the small intestine. Here's how it works.
Alzheimer's disease: Can exercise prevent memory loss?
Regular exercise may help in preventing Alzheimer's disease and improving cognitive function.
Canola oil: Does it contain toxins?
Health concerns about canola oil abound on the internet but are unfounded.
DASH diet: Tips for dining out
You can eat out and follow the DASH diet. Use these tips to make healthier choices when you dine out.
Infectious diseases
Viruses, bacteria, fungi and parasites can all cause infection. Find out more about how to prevent and treat these conditions.
Malaria
Learn about the symptoms, causes, treatment, and prevention of this infectious disease transmitted to humans through mosquito bites.
Blocked tear duct
Watery, irritated eyes may occur when your tears can't drain normally. Learn about this common eye condition that affects newborns and sometimes, adults.
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