Vaccines prevent between 2.5 and 4 million deaths every year.
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People about to have surgery must tell their health care providers about all supplements they take.
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Thyroid conditions may make getting pregnant impossible.
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Interferon was scarce and expensive until 1980, when the interferon gene was inserted into bacteria using recombinant DNA technology, allowing for mass cultivation and purification from bacterial cultures.
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Long-term mental and physical effects from substance abuse include: paranoia, psychosis, immune deficiencies, and organ damage.