# Samsung Medical Center smoking cessation studies

> Live situation record from CLSTR: https://clstr.news/situations/samsung-medical-center-smoking-cessation-studies
> Updated: 2026-09-08T01:57:53.000Z. Sources: 3. Developments: 2.

Researchers from Samsung Medical Center and Sungkyunkwan University have published findings regarding the impact of smoking habits on cancer risks and mortality.

An initial large-scale study involving 46,834 cancer patients found that complete smoking cessation resulted in an 8% lower overall mortality risk and a 36% lower risk of major cardiovascular events compared to continuous combustible cigarette use. The study noted that while switching to e-cigarettes showed a 16% lower mortality risk, researchers cautioned that e-cigarettes are not a substitute for complete cessation, particularly as many users remain dual users.

A subsequent study focusing on patients with chronic hepatitis B indicated that both smoking cessation and transitioning to e-cigarettes were associated with an approximately 22% lower risk of hepatocellular carcinoma compared to continuous conventional smokers. For participants who maintained these habits for at least three years, the risk reduction reached 36% for the cessation group and 27% for the e-cigarette group. Researchers emphasized that while these findings suggest potential harm reduction, the observational nature of the studies does not prove causality.

## Timeline

### 2026-09-08: Samsung Medical Center study links smoking cessation to lower liver cancer risk

A study of 127,196 chronic hepatitis B patients in South Korea found that quitting smoking or switching to e-cigarettes is associated with a 22% lower risk of liver cancer compared to continuous conventional 흡연

2 sources. https://clstr.news/cluster/samsung-medical-center-study-links-smoking-cessation-to-lower-liver-cancer-risk

### 2026-09-04: Samsung Medical Center study: Smoking cessation reduces mortality in cancer patients

A Samsung Medical Center study reveals that cancer patients who quit smoking reduce mortality risk by 8% and cardiovascular risks by 36%, while e-cigarettes may serve as a harm reduction tool.

2 sources. https://clstr.news/cluster/samsung-medical-center-study-smoking-cessation-reduces-mortality-in-cancer-patients

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Cite as: Samsung Medical Center smoking cessation studies. CLSTR, https://clstr.news/situations/samsung-medical-center-smoking-cessation-studies