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In 1835 it was discovered that a disease of silkworms known as muscardine could be transferred from one silkworm to another, and was caused by a fungus.
Adolescents often feel clumsy during puberty because during this time of development, their hands and feet grow faster than their arms and legs do. The body is therefore out of proportion. One out of five adolescents actually experiences growing pains during this period.
According to the Migraine Research Foundation, migraines are the third most prevalent illness in the world. Women are most affected (18%), followed by children of both sexes (10%), and men (6%).
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 war in which wide-scale use of anesthetics occurred was the Civil War, and 80% of all wounds were in the extremities.
![Microscopic photo taken by Opportunity showing a gray hematite concretion, indicative of the past pr](https://biology-forums.com/gallery/47/medium_12359_30_06_12_4_45_58.jpeg)
![Diverticulosis. It is the presence of abnormal pouches in the wall of the large intestine (diverticu](https://biology-forums.com/gallery/47/medium_14755_26_10_12_5_22_59_96831113.jpeg)