The most destructive flu epidemic of all times in recorded history occurred in 1918, with approximately 20 million deaths worldwide.
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More than 20 million Americans cite use of marijuana within the past 30 days, according to the National Survey on Drug Use and Health (NSDUH). More than 8 million admit to using it almost every day.
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Serum cholesterol testing in adults is recommended every 1 to 5 years. People with diabetes and a family history of high cholesterol should be tested even more frequently.
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Thyroid conditions may make getting pregnant impossible.
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It is difficult to obtain enough calcium without consuming milk or other dairy foods.
The U.S. Long-Term Ecological Research (LTER) network.
Selected Hypothalamic and Pituitary Agents
Selected Drugs Associated with Serious Adverse Effects During Breast-Feeding