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The average human gut is home to perhaps 500 to 1,000 different species of bacteria.
This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.
People about to have surgery must tell their health care providers about all supplements they take.
Approximately 70% of expectant mothers report experiencing some symptoms of morning sickness during the first trimester of pregnancy.
Approximately 500,000 babies are born each year in the United States to teenage mothers.
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