Department of Cell Biology, Harbin Medical University, No.157 Baojian Road, Harbin, 150081, China.
School of Public Health, Zunyi Medical University, Zunyi, China.
Nutr J. 2024 Nov 28;23(1):148. doi: 10.1186/s12937-024-01054-9.
The association of tea consumption with life expectancy in US adults remains unclear. This study aimed to evaluate the correlation between tea consumption and life expectancy among US adults.
Tea consumption records and available mortality data from National Health and Nutrition Examination Survey 2001 to 2018 for adults ≥ 20 years of age were used (n = 43,276). Participants were grouped based on their daily tea consumption as follows: non-drinkers, < 1 cup/day, 1 to < 3 cups/day, 3 to < 5 cups/day, and ≥ 5 cups/day. Life table method was used to evaluate the association between daily tea consumption and life expectancy.
During a median follow-up of 8.7 years, we documented 6275 deaths out of the 43,276 participants. The estimated life expectancy at age 50 years was 30.69 years (95% confidence interval, 30.53 to 30.89), 30.77 years (29.45 to 32.19), 31.07 years (30.35 to 31.69), 32.93 years (31.24 to 34.5), and 29.68 years (27.38 to 31.97) in tea-consuming participants with non-drinker, < 1 cup/day, 1 to < 3 cups/day, 3 to < 5 cups/day, and ≥ 5 cups/day, respectively. Equivalently, participants with 3 to < 5 cups/day consumption had a life gain of average 2.24 years (0.49 to 3.85) compared with those without tea consumption. Similar years of life gained were observed in females and White individuals, but not in males, Black and Hispanic populations. Notably, obvious health benefits weren't observed in other groups of tea consumption. The addition of sugar to tea is a potential health risk factor.
Consuming 3 to < 5 cups/day of tea may be a healthy recommendation for tea intake, and the addition of sugar to tea should be approached with caution.
饮茶与美国成年人预期寿命之间的关系尚不清楚。本研究旨在评估美国成年人饮茶与预期寿命之间的相关性。
使用了 2001 年至 2018 年国家健康与营养调查中 20 岁及以上成年人的饮茶记录和可用的死亡率数据（n=43276）。参与者根据其每日饮茶量分为以下几组：不饮者、<1 杯/天、1 至<3 杯/天、3 至<5 杯/天和≥5 杯/天。寿命表法用于评估每日饮茶量与预期寿命之间的关系。
在中位数为 8.7 年的随访期间，我们在 43276 名参与者中记录了 6275 例死亡。50 岁时的预期寿命估计为 30.69 岁（95%置信区间，30.53 至 30.89）、30.77 岁（29.45 至 32.19）、31.07 岁（30.35 至 31.69）、32.93 岁（31.24 至 34.5）和 29.68 岁（27.38 至 31.97），分别在饮茶参与者中不饮者、<1 杯/天、1 至<3 杯/天、3 至<5 杯/天和≥5 杯/天。同样，与不饮茶相比，3 至<5 杯/天的饮茶者平均寿命延长了 2.24 年（0.49 至 3.85）。这种获益在女性和白人中也有观察到，但在男性、黑人和西班牙裔人群中没有观察到。值得注意的是，在其他饮茶组中并未观察到明显的健康益处。在茶中加糖可能是一个潜在的健康风险因素。
每天饮用 3 至<5 杯茶可能是健康的饮茶推荐，而在茶中加糖应谨慎对待。
