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Author Question: Some polygynous societies try to reduce competition by practicing sororal polygyny, which is when ... (Read 30 times) |
Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.
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.
The first oral chemotherapy drug for colon cancer was approved by FDA in 2001.
Today, nearly 8 out of 10 pregnant women living with HIV (about 1.1 million), receive antiretrovirals.
Fewer than 10% of babies are born on their exact due dates, 50% are born within 1 week of the due date, and 90% are born within 2 weeks of the date.