About 1 in 6 teenagers between 15-17 have tried chewing tobacco, with about 5000 people chewing daily. Chewing tobacco appeals most to boys between 14-17, influenced by baseball players who chew. Chewing tobacco can seriously damage one's health, particularly the mouth, and can cause gum cancer, blackened teeth, bad breath, tooth loss and skin falling off the mouth. Major chewing tobacco brands like Longhorn, Kodiak and Skoal target teenagers in their advertising and contain highly addictive nicotine to hook users. Teenagers often start chewing due to influence from parents or friends.