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Before a vaccine is licensed in the USA, the Food and Drug Administration (FDA) reviews it for safety and effectiveness. The CDC then reviews all studies again, as well as the American Academy of Pediatrics and the American Academy of Family Physicians. Every lot of vaccine is tested before administration to the public, and the FDA regularly inspects vaccine manufacturers' facilities.
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.
Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.
Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.
Multiple experimental evidences have confirmed that at the molecular level, cancer is caused by lesions in cellular DNA.