Would it depend on the eating disorder?
Let’s say it was bulimia, it would be catagorized as binging and purging.
A chronic illness and a communicable disease
Answer: 80-90%
Explanation: "Cigarette smoking is the number one risk factor for lung cancer. In the United States, cigarette smoking is linked to about 80% to 90% of lung cancer deaths. Using other tobacco products such as cigars or pipes also increases the risk for lung cancer." - cdc.gov
For safety it is important to consider the danger of aggressive animals like bears or wolves when planning an outdoor activity because an attack could be very fatal.