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After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.
Your heart beats over 36 million times a year.
Vaccines prevent between 2.5 and 4 million deaths every year.
By definition, when a medication is administered intravenously, its bioavailability is 100%.
Long-term mental and physical effects from substance abuse include: paranoia, psychosis, immune deficiencies, and organ damage.
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