The association between consumption of dairy products and risk of chronic kidney disease (CKD) is under debate. The researchers aimed to determine the potential effects of total and subtypes of dairy intake on the occurrence of CKD.
This study was conducted within the Tehran Lipid and Glucose Study (TLGS) on 2416 CKD-free adults. At baseline, consumption of dairy products was estimated using a validated 168-items semiquantitative food frequency questionnaire. Adjusted hazard ratios (HRs) and 95% confidence intervals (CIs) of CKD were calculated in tertile categories of dairy products. Also, the CKD risk was estimated with multivariable Cox regression to substitute total dairy with other dietary protein sources.
Results
• During 8.4 years of follow-up, the incidence rate of CKD was 21%.
• The participants' mean (±SD) age was 38 (±13) years and 46% were men.
• Dietary intakes of total dairy, low-fat dairy, and fermented dairy were not associated with CKD risk.
• There were significant lower risks of CKD in the highest compared to the lowest tertiles of high-fat dairy and high-fat milk
• However, no significant associations were found between other categories of dairy products and CKD incidence.
• Substitutions of total dairy with other dietary protein sources were not associated with CKD risk.
In this study, higher intakes of high-fat dairy and high-fat milk were associated with lower risks of CKD. No significant associations were found between other dairy products and CKD. However more prospective and clinical trials are needed to clarify the issue.
Reference
Zahra Gaeini, Zahra Bahadoran, Parvin Mirmiran, Zahra Feyzi, Fereidoun Azizi. High-Fat Dairy Products May Decrease the Risk of Chronic Kidney Disease Incidence: A Long-Term Prospective Cohort Study. Journal of Renal Nutrition Published:October 18, 2022DOI https://doi.org/10.1053/j.jrn.2022.10.003
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