Nutrition basics
Learning Center
Erectile dysfunction: A sign of heart disease?
Erectile dysfunction and heart disease can be linked. Take steps to avoid both.
Healthy sperm: Improving your fertility
You can take simple steps to have healthy sperm and improve your fertility.
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.
Types of dermatitis
Learn to identify types of dermatitis by how the skin looks. Examples include atopic dermatitis, contact dermatitis and seborrheic dermatitis.
Cast care: Do's and don'ts
Find out more about tips for keeping a cast safe — and your child comfortable — while an injury heals.
Nutrition for kids: Guidelines for a healthy diet
See the current children's nutrition recommendations for protein, carbohydrates, more.
COVID-19 vaccines for kids: What you need to know
Learn about the safety and effectiveness of COVID-19 vaccines for kids, the possible side effects, and the benefits of vaccination.
COVID-19, cold, allergies and the flu: What are the differences?
Knowing if you have COVID-19, a cold, the flu or seasonal allergies isn't easy. Find out about the differences between these illnesses.
Erectile dysfunction and diabetes: Take control today
Learn strategies to prevent or treat this common and frustrating potential complication of diabetes.
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