FRENCH scientists may have found the first biological evidence that tobacco can make smokers less intelligent and more forgetful. Scientists at the Paris-based National Institute for Health and Medical Research found in tests on rats that the harmful nicotine in cigarettes destroys brain cells and impedes production of new ones. Rats given nicotine intravenously suffered significant drops in production of PSA-NCAM, a protein with a vital role in the 'plasticity' of the brain, which is related to the ability to learn and memorise. Those rats ...

Full access to this article can be arranged with permission from the client that first ordered it. Please contact us to request access. Entries are uploaded to our archive at least one year after being published by a client – free access is restricted to International News Services journalists for background research only. The article date indicates when copy was filed to a client, not when posted to this archive. Upon client requests, International News Services will remove such articles from the archive or not upload them in the first place. They are included to demonstrate the breadth of topics undertaken by the agency and also to help promote clients’ coverage.