|
|
Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.
Women are two-thirds more likely than men to develop irritable bowel syndrome. This may be attributable to hormonal changes related to their menstrual cycles.
In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.
Pope Sylvester II tried to introduce Arabic numbers into Europe between the years 999 and 1003, but their use did not catch on for a few more centuries, and Roman numerals continued to be the primary number system.
Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.
![National Guardsmen firing into a crowd of antiwar protesters at Kent State University killed four ...](https://biology-forums.com/gallery/47/medium_617724_05_12_16_5_58_24_242161233.jpeg)
![Two areas of reduced cortical volume and one area of increased cortical volume observed in people ...](https://biology-forums.com/gallery/30/medium_548020_06_06_17_12_41_57_30349185.png)