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Int J Med Sci 2022; 19(10):1596-1602. doi:10.7150/ijms.75774 This issue Cite

Research Paper

Habitual Tea Consumption and Risk of Cataracts: A Longitudinal Study

Chia-Wen Chang¹, Jia-In Lee², Chun-Yen Huang¹, Chun-Chi Lu¹, Yao-Hua Liu¹, Shu-Pin Huang^4,5, Szu-Chia Chen^6,7,8,9, Jiun-Hung Geng^4,5,9,10✉

1. Department of Emergency Medicine, Kaohsiung Municipal Siaogang Hospital, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan
2. Department of Psychiatry, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
3. Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan
4. Department of Urology, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan
5. Graduate Institute of Clinical Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
6. Department of Internal Medicine, Kaohsiung Municipal Siaogang Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan
7. Department of Internal Medicine, Division of Nephrology, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan
8. Faculty of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
9. Research Center for Environmental Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
10. Department of Urology, Kaohsiung Municipal Siaogang Hospital, Kaohsiung, Taiwan

✉ Corresponding author: Jiun-Hung Geng, Department of Urology, Kaohsiung Municipal Siaogang Hospital, Kaohsiung, Taiwan. No. 482, Shanming Rd, Xiaogang District, Kaohsiung City 812, Taiwan. Tel. +886(7)3208212. Fax: +886(7)3211033. E-mail: u9001090com More

Abstract

We aimed to investigate the association between habitual tea consumption and the risk of developing cataracts in a large community-based cohort study. We prospectively collected volunteers from 29 recruitment centers that were ≧ 55 years old with no history of cataracts at the beginning of the study. There were 12,080 participants with available information in our study and were divided into two groups according to habitual tea consumption; non-tea-drinking and tea-drinking groups. The mean age was 59 years. Compared to the non-tea-drinking group, the tea-drinking group had a significantly lower incidence of developing cataracts (15.5% vs 12.1%) during follow-up of 46 months. In multivariate Cox proportional hazards regression analysis, the relative risk (RR) of incident cataracts was lower in the tea-drinking group than the non-tea-drinking group (RR = 0.848; 95% confidence interval [CI] = 0.751 to 0.957). Participants with ≧ 2 cups per day were associated with almost 16% reduction in the risk of developing cataracts compared with the non-tea-drinking group (RR = 0.844; 95% CI = 0.741 to 0.961). Our study suggests that habitual tea consumption can reduce the incidence of cataracts and raises the possibility that the tea content may slow the progression of cataracts.

Keywords: Epidemiologic study, Longitudinal study, Cataract, Tea, Ocular disease, Risk factors.

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