cigarette smoking can cause 10 Health Effects Caused by You Didn't Know About | State of Tobacco Control Smoking has a serious effect

Heavy marijuana users often say they have trouble thinking clearly, concentrating, and remembering things in the first one to three weeks after quitting

J Neurovirol

This baseline sample serves as the foundation for a prospective cohort study that will follow participants over the coming years, allowing future analyses of trends in tobacco and nicotine product use and related health outcomes

Bergounioux, W

So, users of psychoactive drugs must not be guided by terms like legal and illegal. It is also erroneous to presume that unregulated new psychoactive substances that are commonly known as legal highs are safer than illegal drugs