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Heart-healthy diet: 8 steps to prevent heart disease
Certain foods can raise your risk of heart conditions. Learn eight ways to get started on a diet that's good for your heart.
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 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 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.
How you hear
Your ears enable you to gather and interpret sounds from the world around you.
Humidifiers: Ease skin, breathing symptoms
Find out about different types of these devices. Learn what they can do for you and how to keep them clean.
Insulin and weight gain: Keep the pounds off
Understand why weight gain is linked to insulin treatment, and find out how to dodge those extra pounds while still managing your blood sugar.
Iron deficiency in children: Prevention tips for parents
Learn how much of this key mineral your child needs and what the health risks of not getting enough are.
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