Did you know?

Ether was used widely for surgeries but became less popular because of its flammability and its tendency to cause vomiting. In England, it was quickly replaced by chloroform, but this agent caused many deaths and lost popularity.

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Thyroid conditions may make getting pregnant impossible.

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There are more nerve cells in one human brain than there are stars in the Milky Way.

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In 2010, opiate painkllers, such as morphine, OxyContin®, and Vicodin®, were tied to almost 60% of drug overdose deaths.

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Vaccines prevent between 2.5 and 4 million deaths every year.

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