The middle of Abraham Lincoln’s shoe wore out faster than the heel or toe. Most people would not find this fact of great interest, but to medical historians, it represents a clue. Three researchers ...

"Mercury poisoning certainly could explain Lincoln's known neurological symptoms: insomnia, tremor and the rage attacks," said Robert G. Feldman, M.D., professor of neurology, pharmacology, and ...

Abraham Lincoln, the man who steered ... to mercury poisoning from 19th century anti-depressants which contained 9,000 times the current safe limit for exposure to the metal. ...

In a story about research into Abraham Lincoln's possible exposure to mercury that ran Tuesday on Page 3A, the Associated Press reported the wrong first name for a historian. He is Richard R. John ...

MINNEAPOLIS (AP) -- Historical accounts of mood swings and angry outbursts by Abraham Lincoln may have been symptoms of mercury poisoning caused from a popular medication he took for depression, ...