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Multiple experimental evidences have confirmed that at the molecular level, cancer is caused by lesions in cellular DNA.
It is believed that the Incas used anesthesia. Evidence supports the theory that shamans chewed cocoa leaves and drilled holes into the heads of patients (letting evil spirits escape), spitting into the wounds they made. The mixture of cocaine, saliva, and resin numbed the site enough to allow hours of drilling.
Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.
Opium has influenced much of the world's most popular literature. The following authors were all opium users, of varying degrees: Lewis Carroll, Charles, Dickens, Arthur Conan Doyle, and Oscar Wilde.
Everyone has one nostril that is larger than the other.
![Glioma. (a) Illustration of a large glioma (colored area) within the left cerebral hemisphere in a s](https://biology-forums.com/gallery/47/medium_14755_14_10_12_6_48_57_94081413.jpeg)
![Relationship between the number of CAG repeats in a gene and the age of onset of Huntington disease.](https://biology-forums.com/gallery/47/medium_234464_20_01_15_10_59_34_202501361.jpeg)