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
The spinal cord send nerve impulses to and from the brain
<span>I'd say the answer is less absorption of nutrients.
When people with celiac disease eat foods with gluten, their immune system reacts by damaging the villi. <span>Because of the damage, the villi are unable to properly absorb iron, vitamins, and other nutrients.</span></span>
