It has been known for decades that cigarette smoking is one of the leading preventable causes of death in the
Western society. According to experts, burned tobacco releases about 4,000 toxic or irritating substances: among these are real poisons such as arsenic, carbon monoxide, polonium, chromium and cadmium. 70 of these substances are considered oncogenic, that is, they favor the onset of tumors.
Continuous exposure to smoke causes rather serious damage to the lungs, which lose
progressively less functional until they become ill. Not to mention the small disorders
smoker's daily routine: sore throat, red gums, fatigue, cough, constant phlegm...
In Italy it is very fashionable to smoke cannabis mixing it with tobacco.

This is why it is said that in our country we smoke “the worst joints in the world”: the set of annoyances and damages they cause is directly proportional to the quantity of tobacco present.
But for those who love to smoke pure cannabis or are considering doing so, science offers some great reassurance: according to a study, smoking hashish without tobacco is not harmful to the lungs.

This is according to researchers from the University of Queensland in Australia, who recently conducted several experiments on the lung health of young adults exposed to cannabis smoke alone.
In the study participants, smoking cannabis for approximately 9 years had no
compromised lung function and did not cause reductions in “airflow,” as did those who smoked only tobacco or mixed tobacco with marijuana. The researchers therefore concluded that cannabis does not cause harm similar to that of “blondes.”
It is often said that excessive heating of the substances that are inhaled and the papers used to wrap tobacco or cannabis also cause damage to the lungs. This is true in theory, but it is now established that those who love to smoke hashish without tobacco have a strong reduction in damage compared to smokers: burnt paper is not the best to breathe, but it certainly does not carry all the poisons that Virginia or Havana contain.
Even an American study from 2017, comparing results collected over about twenty years, goes to
further confirm what the Australian researchers found: smokers of marijuana alone can rest easy, while smokers experience ongoing harm due to their habit.
Here a final question arises: are there quantities that are considered safe, while
can excess become counterproductive? According to the American study, one “joint” a day is considered safe. For the rest, we rely on the common sense of consumers.
Remember that those who want to quit smoking completely but do not want to give up the beneficial effects of cannabis and in particular CBD can take this substance in many ways: from sweets prepared with cannabis butter, to oils, to combustion-free inhalers modeled after the electronic cigarette.