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Multiple experimental evidences have confirmed that at the molecular level, cancer is caused by lesions in cellular DNA.
Acetaminophen (Tylenol) in overdose can seriously damage the liver. It should never be taken by people who use alcohol heavily; it can result in severe liver damage and even a condition requiring a liver transplant.
In 1885, the Lloyd Manufacturing Company of Albany, New York, promoted and sold "Cocaine Toothache Drops" at 15 cents per bottle! In 1914, the Harrison Narcotic Act brought the sale and distribution of this drug under federal control.
There are approximately 3 million unintended pregnancies in the United States each year.
Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
![In 2008, the U.S. economy suffered a gaping wound as several trillion dollars were ripped out of it.](https://biology-forums.com/gallery/47/medium_262797_12_08_15_1_33_47_22176335.png)
![The world attempted to deal with Somalia as if it were a real country but painfully learned that Som](https://biology-forums.com/gallery/47/medium_262797_12_08_15_1_46_36_22194163.png)