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The longest a person has survived after a heart transplant is 24 years.
On average, someone in the United States has a stroke about every 40 seconds. This is about 795,000 people per year.
Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
The average human gut is home to perhaps 500 to 1,000 different species of bacteria.
Women are 50% to 75% more likely than men to experience an adverse drug reaction.
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