Some of the variation in weight that is not. accounted for in Tables 1 or 2 is due to the variation. in the wood density of the different species. AdjustÂ­. ment factors have been developed to account for the. variation by species. The adjustment factors were. each species by the average density of all of the trees.
For example, regular smoking increases the risk of developing lung cancer; therefore smoking is a risk factor for lung cancer. The risk factors for mouth cancer include: 1  Smoking - studies indicate that a 40-per-day smoker has a risk five times great than a lifetime non-smoker of developing oral cancer.  Chewing tobacco.
Dry mouth can be due to certain health conditions, such as diabetes, stroke, yeast infection (thrush) in your mouth or Alzheimer's disease, or due to autoimmune diseases, such as Sjogren's syndrome or HIV/AIDS. Snoring and breathing with your mouth open also can contribute to dry mouth. Tobacco and alcohol use. Drinking alcohol and smoking or chewing tobacco can increase dry mouth symptoms. Recreational drug use. Methamphetamine use can cause severe dry mouth and damage to teeth, a condition also known as meth mouth. Marijuana also can cause dry mouth. Complications. If you don't have enough saliva and develop dry mouth, this can lead to: Increased plaque, tooth decay and gum disease; Mouth sores; Yeast infection in your mouth (thrush)