Healthy diets
Learning Center
Low-glycemic index diet: What's behind the claims?
Find out about the low-glycemic index diet — an eating plan based on how food affects blood sugar levels.
Low-fiber diet do's and don'ts
Learn which foods are allowed and which foods to avoid on a low-fiber diet.
Learning disorders: Know the signs, how to help
Here's how to find out what's going on if your child often has trouble with reading, writing or other skills.
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.
How you hear
Your ears enable you to gather and interpret sounds from the world around you.
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 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.
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.
Headaches and hormones: What's the connection?
Headaches are part of life for many people. Understand how hormones can play a role.
Hand-washing: Do's and don'ts
Done properly, hand-washing is a simple way to prevent the spread of germs and avoid getting sick.
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