The most concerning ingredients in smokeless tobacco are tobacco-specific nitrosamines (TSNAs) that are formed during the curing, fermenting, and the aging process
Smokeless tobacco is a major cause of oral cancer
All tobacco products, including cigarettes, cigars, pipe tobacco, chewing tobacco, and snuff, contain the Poisonous substances (toxins), Cancer-causing agents (carcinogens), Nicotine, an addictive substance All tobacco products, including cigarettes, cigars, pipes, and smokeless tobacco (chewing tobacco, snuff, or a type of chewing tobacco called betel quid) are linked to head and neck cancer (except for salivary gland cancers)
Many areas have no such distinction, and may rarely use the word "snuff"