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Side effects from substance abuse include nausea, dehydration, reduced productivitiy, and dependence. Though these effects usually worsen over time, the constant need for the substance often overcomes rational thinking.
The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").
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.
Medication errors are more common among seriously ill patients than with those with minor conditions.
According to the FDA, adverse drug events harmed or killed approximately 1,200,000 people in the United States in the year 2015.