when was cigarette smoking linked to cancer breathes life into cancer. It increases the risk of at least 20 different types or sub-types of cancer. Today, tobacco use remains the single most preventable cause of cancer. Nearly 40% Tobacco control | UICC

Current smoking rates have remained at 8.3 to 8.4% for the last three years

Ultimately, by preventing these kids from becoming established smokers, the campaign will save them, their families, and the country more than $53 billion by reducing smoking-related costs like early loss of life, costly medical care, lost wages, lower productivity, and increased disability thats more than $180,000 in savings for each of the up to 293,500 youth that would likely have become an established smoker

Glycerin exhibits excellent solubility properties for tannins, phenol and boric acid

It's just not in a high enough concentration to impact health

With respect to combined exposure, it is assumed that the relative risks are simply multiplicative (no interaction)