athletes who chew tobacco New York's chewing ban shows dipping is yesterday's pastime | MLB Death of baseball's Tony Gwynn

One study found that testosterone levels increased by 10-15% after quitting smoking [1]

NFL's rulebook is clear: "Among the types of activity that are prohibited are use of tobacco products (smokeless included) while in the bench area (...)

But chewing tobacco, also known as smokeless tobacco or snuff, still poses serious health risks

When sufficiently dosed and prolonged, they reduce the nicotine withdrawal symptoms that smokers may experience at the start of quitting

Jerry Brown signing a bill earlier this week banning the use of smokeless tobacco in all California ballparks, the practice now seems headed toward the sports endangered species list