Tobacco related to hairy tounge disease?

I was really intrigued to see that statistic of tobacco use to the amount of money that people spend on it. According to Center for Disease Control and Prevention,” Almost $23 million spent every day in 2011” coupled with that “$8.37 billion total spent in 2011”. That is an absurd amount of money for something that has statistically been proven to decrease your health and even lead to mortality.  as stated by Center for Disease Control and Prevention ,”Worldwide, tobacco use causes more than 5 million deaths per year, and current trends show that tobacco use will cause more than 8 million deaths annually by 2030. So my question is why do it? A question I was curious about is a disease that I have heard of called hairy tongue that comes from smoking. How exactly does smoking cause hair to grow on the tongue? The answer to this question that I found was that hairy tongue isn’t necessarily directly related to smoking. Rather it is a result from either too much bacteria or yeast in your mouth. When the bacteria builds up it resides in small bumps on the tongue which are essentially your taste buds. The dark black fuzzy color and build up  is a direct result of certain types of bacteria or yeast.

Arin Gilliland

Refrences: http://www.cdc.gov/tobacco/data_statistics/fact_sheets/fast_facts/

http://www.1800dentist.com/black-hairy-tongue/