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For about 100 years, scientists thought that peptic ulcers were caused by stress, spicy food, and alcohol. Later, researchers added stomach acid to the list of causes and began treating ulcers with antacids. Now it is known that peptic ulcers are predominantly caused by Helicobacter pylori, a spiral-shaped bacterium that normally exist in the stomach.
In women, pharmacodynamic differences include increased sensitivity to (and increased effectiveness of) beta-blockers, opioids, selective serotonin reuptake inhibitors, and typical antipsychotics.
Vaccines prevent between 2.5 and 4 million deaths every year.
Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.
The calories found in one piece of cherry cheesecake could light a 60-watt light bulb for 1.5 hours.