Pregnancy symptoms
Learning Center
How you hear
Your ears enable you to gather and interpret sounds from the world around you.
How to take your temperature
Learn how to get an accurate temperature reading at home, using common types of thermometers.
How to take your pulse
Learn two ways to take an accurate pulse, or heart rate.
How to measure your respiratory rate
Learn how to accurately measure your breathing rate, which is also known as your respiratory rate.
Home pregnancy tests: Can you trust the results?
Wondering if you're pregnant? Know the pros and cons of home pregnancy testing.
Herd immunity and COVID-19: What you need to know
To protect groups of people over time, it helps to know what level of recovery or vaccination in a population makes it hard for a germ to spread.
Herbal supplements and heart medicines may not mix
Some herbal supplements can have dangerous interactions with heart medications.
Heart disease in women: Understand symptoms and risk factors
Heart disease and heart attack symptoms may be different in woman than in men. Know the warning signs and learn ways to protect your heart.
Hearing aids: How to choose the right one
Find out how to choose the right hearing aid.
Healthy sperm: Improving your fertility
You can take simple steps to have healthy sperm and improve your fertility.
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