Nutritional supplements
Learning Center
Fiber supplements: Safe to take every day?
Fiber supplements are one way to add fiber to the diet. Here are some tips for using them safely.
Cancer survival rate: What it means for your prognosis
No one can predict the future, but cancer survival rates can give you an idea of your prognosis. Should you pay attention to them?
Glucose challenge test
Know how to prepare for this gestational diabetes screening test.
A1C test
Learn more about the preparation for and results of this common diabetes blood test.
Rheumatoid factor
Rheumatoid factor — This blood test can help diagnose autoimmune disorders such as rheumatoid arthritis, Sjogren syndrome and lupus.
Complete blood count (CBC)
Learn what to expect from having this common blood test, why it's done and how to prepare.
STD testing: What's right for you?
Find out how your risk factors affect the types of tests you'll need for sexually transmitted infections (STIs).
Cancer blood tests: Lab tests used in cancer diagnosis
Blood tests used to help diagnose cancer include CBC and tumor marker tests. Other tests and procedures are needed to confirm a cancer diagnosis.
Vitamin C: An essential nutrient
Vitamin C is a water-soluble vitamin that supports normal growth and development and helps your body absorb iron. Because your body doesn't produce or store vitamin C, it's important to include vitamin C in your diet. For most people, an orange or a cup of strawberries, chopped red pepper, or broccoli provides enough vitamin C for the day.
Nutrition: Does it come in a pill?
Nutritional supplements abound. Still, if you want to improve and protect your health, think real food. If you depend on supplements rather than eating a variety of foods, you miss the potential benefits of antioxidants, fiber and other nutrients that only whole, unprocessed foods can provide.
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