rj reynolds tobacco company R. J. R. J. Reynolds - Wikipedia

It also contributes to cancers of the head and neck, stomach, kidney, pancreas, colon, bladder, cervix, and can also cause leukemia

"It is definitely known that inhaled marijuana, which I believe is the most common form of marijuana use, can lead to lung disease." Some studies suggest marijuana use can make underlying mental health issues worse

The paper notes that you would need to eat around 10 grams of aubergine to consume about 1 microgram of nicotine (the approximate amount of nicotine inhaled through 3 hours of passive cigarette smoke exposure)

That's because, according to experts, smoking cigarettes every day prolongs the healing time for many types of wounds