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Did you know?
The familiar sounds of your heart are made by the heart's valves as they open and close.
Did you know?
According to the American College of Allergy, Asthma & Immunology, more than 50 million Americans have some kind of food allergy. Food allergies affect between 4 and 6% of children, and 4% of adults, according to the CDC. The most common food allergies include shellfish, peanuts, walnuts, fish, eggs, milk, and soy.
Did you know?
Approximately 500,000 babies are born each year in the United States to teenage mothers.
Did you know?
There are approximately 3 million unintended pregnancies in the United States each year.
Did you know?
The average adult has about 21 square feet of skin.

