Researchers at the University of Copenhagen who studied the immediate reaction in the brain after quitting smoking believe that stopping smoking gradually may lead to success.

“Regular smokers experience an almost dementia-like condition in the early hours after quitting, as suggested by brain scans. This can be quite an unpleasant experience, and is probably one of the reasons why it can be very difficult to quit smoking once and for all. Smokers drift back into abuse, perhaps not to obtain a pleasant effect — that ship has sailed — but simply because the withdrawal symptoms are unbearable,” says Professor Albert Gjedde, neuroscience researcher at the Department of Neuroscience and Pharmacology, University of Copenhagen.