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The liver is the only organ that has the ability to regenerate itself after certain types of damage. As much as 25% of the liver can be removed, and it will still regenerate back to its original shape and size. However, the liver cannot regenerate after severe damage caused by alcohol.
If all the neurons in the human body were lined up, they would stretch more than 600 miles.
The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.
Eat fiber! A diet high in fiber can help lower cholesterol levels by as much as 10%.
The first successful kidney transplant was performed in 1954 and occurred in Boston. A kidney from an identical twin was transplanted into his dying brother's body and was not rejected because it did not appear foreign to his body.