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In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.
This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.
Hypertension is a silent killer because it is deadly and has no significant early symptoms. The danger from hypertension is the extra load on the heart, which can lead to hypertensive heart disease and kidney damage. This occurs without any major symptoms until the high blood pressure becomes extreme. Regular blood pressure checks are an important method of catching hypertension before it can kill you.
Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.
There are more nerve cells in one human brain than there are stars in the Milky Way.