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After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.
Thyroid conditions may make getting pregnant impossible.
There are more sensory neurons in the tongue than in any other part of the body.
There are approximately 3 million unintended pregnancies in the United States each year.
Elderly adults are living longer, and causes of death are shifting. At the same time, autopsy rates are at or near their lowest in history.
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