Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.
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It is difficult to obtain enough calcium without consuming milk or other dairy foods.
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The U.S. Preventive Services Task Force recommends that all women age 65 years of age or older should be screened with bone densitometry.
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If all the neurons in the human body were lined up, they would stretch more than 600 miles.
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Many medications that are used to treat infertility are injected subcutaneously. This is easy to do using the anterior abdomen as the site of injection but avoiding the area directly around the belly button.
Procedures for Diagnostic Tests Related to the Digestive System