Active and passive smoking and risk of ulcerative colitis: A case-control study in Japan.
Atsushi NishikawaKeiko TanakaYoshihiro MiyakeChisato NagataShinya FurukawaAkira AndohTetsuji YokoyamaNaoki YoshimuraKenichiro MoriTomoyuki NinomiyaYasunori YamamotoEiji TakeshitaYoshio IkedaMitsuru SaitoKatsuhisa OhashiHirotsugu ImaedaKazuki KakimotoKazuhide HiguchiHiroaki NunoiYuji MizukamiSeiyuu SuzukiSakiko HiraokaHiroyuki OkadaKeitarou KawasakiMasaaki HigashiyamaRyota HokariHiromasa MiuraTeruki MiyakeTeru KumagiHiromasa KatoNaohito HatoKoji SayamaYoichi Hiasanull nullPublished in: Journal of gastroenterology and hepatology (2021)
We confirmed that former smoking elevated the risk of UC, whereas an inverse association between current smoking and the risk of UC did not reach a statistically significant level. Passive smoking may be associated with an increased risk of UC.
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