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Coca-Cola originally used coca leaves and caffeine from the African kola nut. It was advertised as a therapeutic agent and "pickerupper." Eventually, its formulation was changed, and the coca leaves were removed because of the effects of regulation on cocaine-related products.
The average office desk has 400 times more bacteria on it than a toilet.
Of the estimated 2 million heroin users in the United States, 600,000–800,000 are considered hardcore addicts. Heroin addiction is considered to be one of the hardest addictions to recover from.
The shortest mature adult human of whom there is independent evidence was Gul Mohammed in India. In 1990, he was measured in New Delhi and stood 22.5 inches tall.
Blood is approximately twice as thick as water because of the cells and other components found in it.
![Sickle cell anemia. The clinical manifestations of sickle cell anemia result from pathologic changes](https://biology-forums.com/gallery/47/medium_14755_01_10_12_7_58_57_9218989.jpeg)
![Polycystic kidney disease. Notice the presence of numerous fluid-filled sacs, or cysts, in these kid](https://biology-forums.com/gallery/47/medium_14755_26_10_12_5_19_57_9665633.jpeg)