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Cyanide works by making the human body unable to use oxygen.

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According to the National Institute of Environmental Health Sciences, lung disease is the third leading killer in the United States, responsible for one in seven deaths. It is the leading cause of death among infants under the age of one year.

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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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Medication errors are more common among seriously ill patients than with those with minor conditions.

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Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.

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