It is still possible either: (1) that the supposed effect is really the cause, or in this case that incipient cancer, or a pre-cancerous condition with chronic inflammation, is a factor in inducing the smoking of cigarettes, or (2) that cigarette smoking and lung cancer, though not mutually causative, are both influenced by a common cause, in this case the individual genotype
Resources 1 Cigar smoking and cancer
The first 7-10 days after quitting are the toughest, and you may need the most help during those early days, she added
Pharmacol Ther
RFK Jr.'s MAHA report on children's health leaves something out: nicotine Trump administration report on children's health leaves one thing out: nicotine Frances Daniels, a Baltimore mother of three, read the Trump administration's 20-page report called "Make Our Children Healthy Again," and noticed some notable words were missing from it: "Smoking" and "nicotine." The word "tobacco" is mentioned once in the document, in a reference to the Bureau of Alcohol, Tobacco and Firearms