They need to go with a doctor for Check the diet
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
Fiber cannot be digested.
Personal Protective Equipment.. :)
