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It is difficult to obtain enough calcium without consuming milk or other dairy foods.
Approximately 70% of expectant mothers report experiencing some symptoms of morning sickness during the first trimester of pregnancy.
In 2012, nearly 24 milliion Americans, aged 12 and older, had abused an illicit drug, according to the National Institute on Drug Abuse (NIDA).
The average human gut is home to perhaps 500 to 1,000 different species of bacteria.
The longest a person has survived after a heart transplant is 24 years.
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