Nutritional supplements
Learning Center
Cholesterol ratio or non-HDL cholesterol: Which is most important?
Non-HDL cholesterol may be more important than cholesterol ratio.
Cholesterol level: Can it be too low?
A high cholesterol level is unhealthy — rarely, very low cholesterol may pose risks, too.
Chickenpox and pregnancy: What are the concerns?
Understand the risks posed by chickenpox during pregnancy.
Cervical length: Why does it matter during pregnancy?
If cervical length during pregnancy shortens too soon, there might be an increased risk of preterm labor.
Cervical dysplasia: Is it cancer?
Learn what to expect if a Pap test shows cells that look different from typical cervical cells. Follow-up tests might include HPV testing and colposcopy.
Cervical cysts: Can they be cancerous?
Cervical cysts usually aren't cancerous. Some types of cervical cysts are so common that they're considered a normal feature of cervical anatomy.
Can vaginal tears during childbirth be prevented?
Learn what you can do to help lower the risk of vaginal tears during childbirth.
Calcium supplements: When should they be taken?
Timing matters when taking these supplements. Learn how to take them.
COVID-19 variants: What's the concern?
The virus that causes COVID-19 has changed over time, which has affected prevention, diagnosis and treatment of COVID-19.
COVID-19 vaccine: Should I reschedule my mammogram?
Swollen lymph nodes caused by the COVID-19 vaccine can look like breast cancer on a mammogram. Find out what to do if you've got a mammogram scheduled.
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