In addition to direct smoking Second-hand smoke and third-hand smoke are even more toxic Popularization of science It is important to note that many people in daily life do not have a smoking habit, but they often encounter environments with second-hand smoke and third-hand smoke, and may suffer even greater harm! One-third of non-smoking adults are exposed to the world of second-hand smoke.
From a compositional perspective, second-hand smoke contains essentially the same harmful substances as first-hand smoke. However, in terms of the specific degree of harm, the concentration of certain toxic components in second-hand smoke is actually higher. For example, the carbon monoxide content in second-hand smoke is5times that of mainstream smoke, tar and nicotine reach3times that of mainstream smoke, and the content of strong carcinogens nitrosamines is even as high as50times that of mainstream smoke85>[2].
A follow-up study lasting for20years showed that the risk of cardiovascular disease among passive smokers even reached the level of daily smoking1-92times. The study also found that people who are exposed to secondhand smoke for 1-7 hours a week have an increased risk of myocardial infarction; When the exposure time exceeds12hours/weeks, the risk increase further increases to< H658>62%[3]。
When is the best time to quit smoking? Popularization of science Some patients may think that they already have a disease, so there's no need to quit smoking", but this is not the case!
Research shows[4] that cancer patients who undergo smoking cessation intervention within 9 months after diagnosis can significantly improve their survival rates for various types of cancer.It is particularly noteworthy that patients who start quitting smoking within 6 months after diagnosis benefit the most, with the most pronounced improvement in their survival outcomes. If patients initiate a smoking cessation program within 6months after diagnosis and successfully quit smoking within 3months, 75% of the cases can achieve a survival extension of 1.8 years.
Lastly, I'll share a tip for quitting smoking: When you feel the urge to smoke due to postoperative pain or chemotherapy anxiety, first perform 3 rounds of "4-7-8 breathing" (inhaling for 4 seconds, holding for 7 seconds, and exhaling for 8 seconds). Most cravings will subside within 90 seconds.
The cancer cells may have taken the lead, but the cigarette in your hand is just giving your opponent a boost to continue “cheering”. Put it down, as soon as20minutes, the heart rate begins to decline.3months later, the immune system reassembles. Don't let "Anyway,has already been diagnosed with cancer" become a self giving prophecy, treat today as the0day, and take the comment section as a witness - let's stretch our lifeline together, and continue to stretch it. <Remember to forward it to family members in need< H250>~】
Reference source:< H266>
[1]Tohmasi S, Baker TB, Heiden BT, et al. Smoking Cessation and Mortality Risk in Cancer Survivorship: Real-World Data From a National Cancer Institute-Designated Cancer Center. J Natl Compr Canc Netw. 2025; 23(10):e257059. doi:10.6004/jnccn.2025.7059
[2]Mattias, Ö berg, and, et al. Worldwide burden of disease from exposure to second-hand smoke: a retrospective analysis of data from 192 countries[J]. Lancet, 2011.
[3]Teo K K , Ounpuu S , Hawken S ,et al. Tobacco use and risk of myocardial infarction in 52 countries in the INTERHEART study: a case-control study.[J]. Lancet, 2007, 368(9536):647-658.
[4]Cinciripini PM, Kypriotakis G, Blalock JA, et al. Survival Outcomes of an Early Intervention Smoking Cessation Treatment After a Cancer Diagnosis. JAMA Oncol. Published online October 31, two thousand and twenty-four doi:10.1001/jamaoncol.2024.4890.
Reviewed by: Lehe New Medical Department
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