People with high total cholesterol have about two times the risk for heart disease as people with ideal levels.
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On average, the stomach produces 2 L of hydrochloric acid per day.
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The average human gut is home to perhaps 500 to 1,000 different species of bacteria.
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The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.
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The highest suicide rate in the United States is among people ages 65 years and older. Almost 15% of people in this age group commit suicide every year.
Blackberry flower and fruit.
Convergent evolution in body forms
Early development of Pancreas
A helical array of and tubulin forms a microtubule
Early Pregnancy Visible Bleeding النزيف في بداية الحمل