Nutritional supplements
Learning Center
Breastfeeding strike: Why do babies refuse to nurse?
Understand why babies sometimes refuse to breastfeed and what you can do about it.
CA 125 test: A screening test for ovarian cancer?
Learn why health care providers generally don't recommend a CA 125 test for ovarian cancer screening.
COVID-19 vs. flu: Similarities and differences
Find out the similarities and differences between coronavirus disease 2019 (COVID-19) and the flu (influenza) and learn about ways to prevent getting these diseases.
COVID-19, cold, allergies and the flu: What are the differences?
Knowing if you have COVID-19, a cold, the flu or seasonal allergies isn't easy. Find out about the differences between these illnesses.
Calcium and calcium supplements: Achieving the right balance
Considering calcium supplements? First figure out how much calcium you need. Then weigh the pros and cons of supplements.
Calcium supplements: When should they be taken?
Timing matters when taking these supplements. Learn how to take them.
Cardiac asthma: What causes it?
Wheezing isn't always due to true asthma. Sometimes it's a sign of heart failure. Know the difference.
Chronic cough
A cough that lasts for weeks could be caused by smoking, postnasal drip, asthma, acid reflux, respiratory infections, COPD or another underlying problem.
Circumcision (male)
Learn about the benefits and risks of surgery to remove the skin that covers the tip of the penis.
Coma
Learn what can cause this state of prolonged loss of consciousness. While a coma rarely lasts longer than a few weeks, some people never wake from one.
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