J-shaped association between dietary zinc intake and new-onset hypertension: a nationwide cohort study in China
Panpan He , Huan Li , Mengyi Liu , Zhuxian Zhang , Yuanyuan Zhang , Chun Zhou , Ziliang Ye , Qimeng Wu , Min Liang , Jianping Jiang , Guobao Wang , Jing Nie , Fan Fan Hou , Chengzhang Liu , Xianhui Qin
Front. Med. ›› 2023, Vol. 17 ›› Issue (1) : 156 -164.
J-shaped association between dietary zinc intake and new-onset hypertension: a nationwide cohort study in China
We aimed to investigate the relationship of dietary zinc intake with new-onset hypertension among Chinese adults. A total of 12,177 participants who were free of hypertension at baseline from the China Health and Nutrition Survey were included. Dietary intake was assessed by three consecutive 24-h dietary recalls combined with a household food inventory. Participants with systolic blood pressure ≥ 140 mmHg or diastolic blood pressure ≥ 90 mmHg or diagnosed by a physician or under antihypertensive treatment during the follow-up were defined as having new-onset hypertension. During a median follow-up duration of 6.1 years, 4269 participants developed new-onset hypertension. Overall, the association between dietary zinc intake and new-onset hypertension followed a J-shape (P for non-linearity < 0.001). The risk of new-onset hypertension significantly decreased with the increment of dietary zinc intake (per mg/day: hazard ratio (HR) 0.93; 95% confidence interval (CI) 0.88–0.98) in participants with zinc intake <10.9 mg/day, and increased with the increment of zinc intake (per mg/day: HR 1.14; 95% CI 1.11–1.16) in participants with zinc intake ≥ 10.9 mg/day. In conclusion, there was a J-shaped association between dietary zinc intake and new-onset hypertension in general Chinese adults, with an inflection point at about 10.9 mg/day.
dietary zinc intake / new-onset hypertension / general population / CHNS
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Higher Education Press
Supplementary files
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