Human neurons are so small that they require a microscope in order to be seen. However, some neurons can be up to 3 feet long, such as those that extend from the spinal cord to the toes.
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More than one-third of adult Americans are obese. Diseases that kill the largest number of people annually, such as heart disease, cancer, diabetes, stroke, and hypertension, can be attributed to diet.
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The longest a person has survived after a heart transplant is 24 years.
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More than 34,000 trademarked medication names and more than 10,000 generic medication names are in use in the United States.