Nutritional supplements
Learning Center
Nasal spray addiction: Is it real?
Nasal spray 'addiction' isn't really an addiction at all. Learn more.
Photodynamic therapy: An effective treatment for lung cancer?
Photodynamic therapy may play a limited role in lung cancer treatment.
After a flood, are food and medicines safe to use?
After a flood, don't eat foods or take medications that have come into contact with flood water or contaminated water.
Liver transplantation for chronic hepatitis C: How common is it?
Chronic hepatitis C may lead to liver failure, which has only one treatment: Liver transplant. Find out more about this risk.
Video: Alzheimer's drug shows early promise
A new drug that's being studied in clinical trials may help slow the progression of Alzheimer's disease.
Birth control patch
Learn how to use this type of birth control that delivers estrogen and progestin through a patch you wear on your skin to prevent pregnancy.
Pros and cons of taking a magnesium supplement
Magnesium supplements are popular but not risk-free. Fortunately food sources are easy to add to your diet.
Percutaneous nephrolithotomy
Percutaneous nephrolithotomy is a procedure for removing large kidney stones. Learn how it's done.
Blood transfusion
A blood transfusion can help replace blood lost due to surgery or injury. It also can help if an illness prevents your body from making blood correctly.
Sleeve gastrectomy
Learn about sleeve gastrectomy, a type of weight-loss surgery that involves removing part of the stomach to make it smaller.
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