Infant health
Learning Center
Hearing aids: How to choose the right one
Find out how to choose the right hearing aid.
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.
Helping baby sleep through the night
Help your baby sleep through the night.
Herbal supplements and heart medicines may not mix
Some herbal supplements can have dangerous interactions with heart medications.
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.
How opioid use disorder occurs
Opioids act on the brain in powerful and potentially dangerous ways. Find out why no one is safe from opioid use disorder and learn what raises the risk.
How to measure your respiratory rate
Learn how to accurately measure your breathing rate, which is also known as your respiratory rate.
How to take your pulse
Learn two ways to take an accurate pulse, or heart rate.
How to take your temperature
Learn how to get an accurate temperature reading at home, using common types of thermometers.
How you hear
Your ears enable you to gather and interpret sounds from the world around you.
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