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Aspirin is the most widely used drug in the world. It has even been recognized as such by the Guinness Book of World Records.
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.
The U.S. Preventive Services Task Force recommends that all women age 65 years of age or older should be screened with bone densitometry.
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.
About 3% of all pregnant women will give birth to twins, which is an increase in rate of nearly 60% since the early 1980s.