The dye used in M&M’s has been found to be helpful to patients suffering from spinal injuries.

CNN:

Researchers at the University of Rochester Medical Center found that when they injected the compound Brilliant Blue G (BBG) into rats suffering spinal cord injuries, the rodents were able to walk again, albeit with a limp.

The only side effect was that the treated mice temporarily turned blue.

I was never happy with blue M&M’s since that color really can’t be found in nature, but this news makes it OK to tolerate them.  Any ongoing studies on the green ones?