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The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.
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Thyroid conditions may make getting pregnant impossible.
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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
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More than 34,000 trademarked medication names and more than 10,000 generic medication names are in use in the United States.
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A recent study has found that following a diet rich in berries may slow down the aging process of the brain. This diet apparently helps to keep dopamine levels much higher than are seen in normal individuals who do not eat berries as a regular part of their diet as they enter their later years.