After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.
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The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.
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Asthma occurs in one in 11 children and in one in 12 adults. African Americans and Latinos have a higher risk for developing asthma than other groups.
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Human neurons are so small that they require a microscope in order to be seen. However, some neurons can be up to 3 feet long, such as those that extend from the spinal cord to the toes.
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Thyroid conditions may make getting pregnant impossible.
Based on the experiments summarized here, how do you think women would modify their interactions if ...