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The average human gut is home to perhaps 500 to 1,000 different species of bacteria.
The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.
This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.
In women, pharmacodynamic differences include increased sensitivity to (and increased effectiveness of) beta-blockers, opioids, selective serotonin reuptake inhibitors, and typical antipsychotics.
The most destructive flu epidemic of all times in recorded history occurred in 1918, with approximately 20 million deaths worldwide.
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