Yep when delivered with a patch and without inhaling lots of other flavorings and PG/VG to get the nicotine."When nicotine binds to receptors in the brain, it releases dopamine, a primary neurotransmitter. Dopamine plays an important role in modulating attention, concentration, appetite suppression, and movement. Dopamine’s effects on movement could explain why nicotine has shown some promise in ameliorating a disorder like Parkinson’s disease in primates. In humans, in fact, large epidemiological series have found lower levels of the Parkinson’s in older smokers. Also, patients with early stages of Alzheimer’s disease show some improvement with nicotine when delivered via a patch."
Also:
Nicotine, the Wonder Drug? | DiscoverMagazine.com
That is the medical establishments viewpoint on this.