NEET PG DENTAL EXAM

Detailed explanation-1: -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. Tobacco smoke is a toxic mix of more than 7, 000 chemicals.

Detailed explanation-2: -It is also important to avoid secondhand smoke. Quitting smoking lowers the risk for 12 types of cancer: cancers of the lung, larynx, oral cavity and pharynx, esophagus, pancreas, bladder, stomach, colon and rectum, liver, cervix, kidney, and acute myeloid leukemia (AML).

Detailed explanation-3: -The basic cause of sporadic (non-familial) cancers is DNA damage and genomic instability. A minority of cancers are due to inherited genetic mutations. Most cancers are related to environmental, lifestyle, or behavioral exposures.

Detailed explanation-4: -What’s the Most Common Type of Lung Cancer in People Who Smoke? Small cell lung cancer (SCLC) occurs almost exclusively in people who smoke, but non-small cell lung cancer (NSCLC) is the most common type. NSCLC accounts for 80% to 85% of all lung cancers.