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Cardiovascular effects One of the few things scientists know for sure about marijuana and cardiovascular health is that people with established heart disease who are under stress develop chest pain more quickly if they have been smoking marijuana than they would have otherwise

Although Quest cigarettes do not contain nicotine, the smoke they produce consists of the same carcinogens as regular cigarettes

However, it soon became clear that benzos also have a high addiction potential when people started dying from overdose and even from withdrawal symptoms from drugs like Valium and Xanax

The mean salivary pH in the non-smokers group was 6.92 and in the smokers group 5.97 [Figure 1]