2nd hand cigarette smoke WHO EMRO Secondhand smoke and aerosol

We are excited with its return

The public should take away its a confirmatory study, but larger and longer than previous studies demonstrating, once again, that smoking marijuana does not impair lung function, unlike tobacco. Tashkin says scientists have a theory that lung capacity is not affected in marijuana smokers because the chemical THC in marijuana has immunosuppressant properties that interfere with the development of respiratory issues such as COPD

The government imposes strict regulations on tobacco sales, including restrictions on packaging and advertising

Not a huge deal considering the thing is guaranteed for life, though

It is the result of decades of development, and a research budget of tens of billions