Nicotine: It may have a good side
It gets people hooked on cigarettes, but researchers hope that nicotine and related compounds will have therapeutic uses.
Nicotine is rightly reviled because of its associations with smoking and addiction. But the rogue substance has a wide range of effects on the brain, which may include some healing properties. Researchers are testing nicotine and related compounds as treatments for Alzheimer's disease, Parkinson's disease, attention deficit/hyperactivity disorder (ADHD), and other conditions.