Nutritional supplements
Learning Center
How well do face masks protect against COVID-19?
Face masks can help slow the spread of coronavirus disease 2019 (COVID-19). Learn about mask types, which masks to use and how to use them.
Safe outdoor activities during the COVID-19 pandemic
Looking for fun summertime activities you can enjoy safely during the COVID-19 pandemic? Here are several options to try.
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.
Different types of COVID-19 vaccines: How they work
Find out how different COVID-19 vaccines cause your body to create antibodies that will fight the COVID-19 virus.
Dense breast tissue: What it means to have dense breasts
Find out what it means if your mammogram report says you have dense breast tissue. Learn about additional breast cancer screening tests to consider.
How to tell if a loved one is abusing opioids
Anyone using opioids is at risk of misusing these medicines. Don't ignore signs of harmful or illegal use. Taking action could save a loved one's life.
Vaginal tears in childbirth
Vaginal tears during childbirth are common. Learn about different kinds of vaginal tears and how they can be treated.
Fetal ultrasound
Look at ultrasound images and learn how to understand what you're seeing.
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