Association between dairy consumption and ischemic heart disease among Chinese adults: a prospective study in Qingdao

Abstract

Background Previous studies linking dairy consumption with ischemic heart disease (IHD) are almost from western countries, with little from China. The present study was to explore the relationship between dairy consumption and IHD among Chinese adults. Methods The data for the present study was from the prospective cohort study of China Kadoorie Biobank in Qingdao, a total of 33,355 participants in the present study. An interviewer-administered laptop-based questionnaire was used to collect information on the consumption frequency of dairy, incident IHD cases were identified through Disease Surveillance Point System and the new national health insurance databases. Cox regression analyses were performed to estimate adjusted hazard ratios (HRs) and confidence interval for the relationship between the incidence of IHD and dairy consumption. Results The baseline survey reported that 32.4% of males and 34.6% of females consumed dairy regularly (i.e. ≥ 4 days/week). Over an average of 9.2 years follow-up, 2712 new-onset IHD were documented. Compared with participants who never or rarely consume dairy, the HR of consumed dairy regularly was 0.85(0.73–0.98) for males (P < 0.05), while no significant benefits were identified for females. Conclusions Regular dairy consumption had an inverse association to the onset of IHD among males, with no similar findings for females.

Association between frequency of dairy product consumption and hypertension: a cross-sectional study in Zhejiang Province, China

“…This discrepancy may reflect urban–rural differences in dairy product consumption, consistent with data from the Chinese national statistical yearbook 2021, indicating that urban residents consumed dairy products more than twice as frequently as residents of rural areas [ 10 ]. Consistent with a previous study, participants who consumed dairy products more frequently were more likely to be young, female, well-educated, wealthy, and to more frequently consume meat and fresh fruit [ 37 ].…”

Dairy consumption in adults in China: a systematic review

“…China Health and Nutrition Survey) without specifying study location, the survey location information was searched and taken from the survey website [ 52 ] or presented as national according to the dataset used in papers. Dietary assessment method for those papers missing relative information were taken from survey website [ 11 ] or other papers which used same survey dataset and provided more detailed information. Following, studies where they reported findings of intake differences between age groups were summarized together.…”

“…Higher intake of dairy was also reported to be associated with lower blood pressure levels in a sample of Chinese young women [ 10 ]. In addition, a study in China found that regular dairy consumption (≥ 4 days/week) was associated with a lower risk of ischemic heart disease (IHD) in males [ 11 ]. Evidence has also shown that consumption of dairy may offer protection against risk of other diseases such as metabolic syndrome [ 12 , 13 ], cardiovascular disease (CVD) [ 14 – 16 ], stroke [ 17 ], obesity [ 13 , 18 , 19 ], type 2 diabetes [ 20 ] and colorectal cancer [ 21 ].…”