Snuff is a moist or dry powder made from the leaves of the tobacco plant. The tobacco is first fermented by heat and moisture and then dried and ground. Moist snuff is placed between the cheek and gum. Dry snuff may be sniffed in through the nostrils, rubbed on the gums, or dipped–that is, placed in the mouth, usually between the gum and lower lip. Various flavorings are added to snuff to improve its taste. Taking snuff can irritate the nerves that carry the sensation of smell and lessen the ability to distinguish odors. Many physicians believe that the use of snuff increases the risk of developing cancer of the mouth and other gum diseases.
