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Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.
Your heart beats over 36 million times a year.
The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.
On average, the stomach produces 2 L of hydrochloric acid per day.
Fungal nail infections account for up to 30% of all skin infections. They affect 5% of the general population—mostly people over the age of 70.
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