(HealthDay News) -- Chewing tobacco, even though it doesn't involve smoking, can still threaten your oral health, the American Dental Association warns.

The ADA says at least 28 cancer-causing chemicals are found in smokeless tobacco products. The group says these products pose increased risk of:

  • Cancer of the mouth, lip, tongue and pancreas.
  • Gum disease and irritation of the tissues inside the mouth.
  • Tooth decay from the sugar that's usually added to these products.
  • Erosion of tooth enamel from grit and sand found in these products.