Which is a risk of using smokeless tobacco?
a. dental problems
b. tongue and gum problems
c. throat and mouth cancer
d. all of the above

Smokeless, snuff, or chewing tobacco contains nicotine as well as many known carcinogens (cancer-causing substances). More nicotine is absorbed by chewing tobacco use that by smoking a cigarette. Chewing tobacco use is a risk factor for the development of oral cancers and precancers.

The talk test measures ease of speaking during exercise;