Meng Dai

Publications (2)2.63 Total impact

• Article: Dietary Factors and Risk of Kidney Stone: A Case-Control Study in Southern China.

  Meng Dai, Ai Zhao, Aiping Liu, Lili You, Peiyu Wang
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  ABSTRACT: OBJECTIVE: Formation of kidney stones is a multifactorial disease, and diet and lifestyle are suggested to contribute remarkably to increased prevalence. The population of Guangzhou, China has a high prevalence rate of kidney stones; however, its risk factors are still unknown. The aim of this study was to investigate the dietary risk factors for kidney stones in southern China. DESIGN: A case-control study was carried out. SETTING: This study was carried out at the Department of Health Management Center, Guangzhou Nanfang Hospital, China. SUBJECTS: This study involved 1,019 newly diagnosed kidney stone patients and 987 healthy control subjects. INTERVENTION: A questionnaire regarding dietary patterns and supplements was used to investigate the risk factors for kidney stone formation. MAIN OUTCOME MEASURE: Food intake frequency, beverage and alcohol consumption, food supplements, and anthropometry were assessed. RESULTS: In the analysis, we found positive associations of kidney stones with consumption of grains (odds ratio [OR] = 2.08; 95% confidence interval [CI] = 1.08, 4.02) and bean products (OR = 3.50; 95% CI = 1.61, 7.59) in women. The variable "fluid drinking" showed a significant protective effect against kidney stones in men (OR = 0.57; 95% CI = 0.36, 0.88). Consuming leafy vegetables more than 3 times per day was positively associated with stones in both men and women (OR = 2.02; 95% CI = 1.04, 3.91 and OR = 3.86; 95% CI = 1.48, 10.04, respectively). Other dietary factors, dietary supplements, and specific food were not related to kidney stone formation in Guangzhou, China. CONCLUSION: The results confirmed that specific diet can affect stone formation in the Chinese population, and varied risk factors were found for different genders.
  Journal of Renal Nutrition 06/2012; · 1.57 Impact Factor
• Article: Risk Factors Associated With Nephrolithiasis: A Case-Control Study in China.

  Ai Zhao, Meng Dai, Yu Juan Chen, Hong En Chang, Ai Ping Liu, Pei Yu Wang
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  ABSTRACT: Nephrolithiasis is a multifactorial disease. The authors conducted a case-control study in China to explore its associated risk factors. A total of 725 nephrolithiasis patients and 553 controls were asked to complete a questionnaire that asked for information about psychological, behavioral, and dietary factors along with a physical and blood biochemical examination. For men, higher education was negatively associated with nephrolithiasis (odds ratio [OR] = 0.6; 95% confidence interval [CI] = 0.4-1.0), whereas hypso-waist-to-hip ratio (hypso-WHR), defined as WHRs >0.9 for men and >0.8 for women (OR = 2.2; 95% CI = 1.4-3.4); overexercise (OR = 2.1; 95% CI = 1.3-3.5); and having experienced negative life events (OR = 2.2; 95% CI = 1.2-4.1) were positively associated with nephrolithiasis. For women, higher fluid intake was negatively associated with nephrolithiasis (OR = 0.6; 95% CI = 0.3-0.9), and abnormal status of blood pressure (BP) and blood lipids was positively associated with nephrolithiasis. Varied factors were related to differences in nephrolithiasis occurrence between genders. Besides taking enough fluids, maintaining a normal metabolic status, avoiding overexercise, and reducing BP might be beneficial in preventing nephrolithiasis.
  Asia-Pacific Journal of Public Health 05/2012; · 1.06 Impact Factor