does smoking cigarettes cause copd A possible mechanism of tobacco smoke induced Chronic Obstructive COPD - Symptoms, Causes, risk

Once you inhale the tobacco smoke, nicotine is delivered straight to your brain within 15 seconds

And as I mentioned, e-cigarettes are not a safe alternative

In the meantime, people who in the past have not been associated with the exercise of much direct power in American life (statisticians, cancer scientists, public-interest lawyers, teachers, public-service advertising men) and a small number of senators, their staff people, and some conscientious public servants in regulatory or other agencies, persevering through years of discouragement, have slowly but tellingly gathered momentum

It can help diagnose a specific type of anemia and other problems