Quote Originally Posted by Kate View Post
I use nicotine for mental health reasons, it improves my mood and has a normalising effect with psychosis.

It's also said to be good for other conditions including ADD, Parkinson's disease and Alzheimer's disease.

High doses of nicotine may be harmful but more and more therapeutic uses are being found.
It's also being tested as an aid for those with Tourettes.

Nicotine and Tobacco - Tourette's Disorder - Tourette Syndrome

Interesting that they found no issues with addiction although definitely not definitive.