Thyroid conditions may make getting pregnant impossible.
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In 1844, Charles Goodyear obtained the first patent for a rubber condom.
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Warfarin was developed as a consequence of the study of a strange bleeding disorder that suddenly occurred in cattle on the northern prairies of the United States in the early 1900s.
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The human body produces and destroys 15 million blood cells every second.
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In most cases, kidneys can recover from almost complete loss of function, such as in acute kidney (renal) failure.
Reindeer antlers grow again each year under a layer of fur called velvet. This reindeer is losing th