Before now, we had a large body of epidemiological evidence linking smoking with cancer, but now we can actually observe and quantify the molecular changes in the DNA due to cigarette smoking, said Ludmil Alexandrov from Los Alamos
Experts long believed that smokers used light or intermittent smoking as a bridge to quitting smoking completely
Understanding Different Testing Methods It's important to understand that different testing methods have different detection capabilities: Urine testing Most common, cost-effective method Lab-based vs rapid tests Understanding accuracy differences Hair follicle testing Longer detection window Oral fluid testing Detects recent use Each method has specific applications, and understanding how long results take helps manage expectations during the testing process
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