We examined the association between green tea consumption and death from pneumonia in humans. We conducted a population-based cohort study, with follow-up from 1995 to 2006. The participants were National Health Insurance beneficiaries in Japan (19,079 men and 21,493 women aged 40-79 y). We excluded participants for whom data on green tea consumption frequency were missing or who had reported a history of cancer, myocardial infarction, stroke, and extreme daily energy intake at baseline. Over 12 y of follow-up, we documented 406 deaths from pneumonia. In women, the multivariate HRs of death from pneumonia that were associated with different frequencies of green tea consumption were 1.00 (reference) for <1 cup/d, 0.59 (95% CI: 0.36, 0.98) for 1-2 cups/d, 0.55 (95% CI: 0.33, 0.91) for 3-4 cups/d, and 0.53 (95% CI: 0.33, 0.83) for > or =5 cups/d, respectively (P for trend: 0.008). In men, no significant association was observed. (宮城県大崎地区の住民対象の前向きコホート研究において、追跡期間12年間、解析対象者40,572名について、緑茶摂取量とその後の肺炎死亡リスクとの関連を明らかにした。12年間の追跡期間中の肺炎死亡は406名だった。女性では、緑茶摂取が1 日１杯未満の群に対し1～2杯/日の群では肺炎死亡リスクが0.59、3～4杯/日の群では0.55、5杯以上/日の群では0.53と低下していた。しかし男性では緑茶摂取頻度と肺炎死亡リスクに関連はみられなかった。)
p.672-679
Watanabe I, Kuriyama S, Kakizaki M, Sone T, Ohmori-Matsuda K, Nakaya N, Hozawa A, Tsuji I.
