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Dietary patterns are associated with stroke in Chinese adults
Yanping Li1, Yuna He, Jianqiang Lai
1National Institute for Nutrition and Food Safety, Chinese Center for Disease Control and Prevention, Beijing, China. yanping@hsph.harvard.edu
The Journal of Nutrition
|August 26, 2011
Summary
The traditional southern Chinese diet is linked to lower stroke risk, while northern and Western diets increase stroke risk. These associations, particularly for Western diets, are mediated by obesity and hypertension.
Area of Science:
- Nutritional Epidemiology
- Cardiovascular Disease Research
- Public Health Nutrition
Background:
- Chinese dietary patterns have been linked to obesity, hyperglycemia, hypertension, and metabolic syndrome.
- Understanding diet's role in stroke risk is crucial for public health interventions.
Purpose of the Study:
- To examine the association between Chinese dietary patterns and stroke risk in adults aged 45 and older.
- To investigate if obesity, hypertension, hyperglycemia, and other cardiovascular risk factors mediate these associations.
Main Methods:
- Utilized data from the 2002 China National Nutrition and Health Survey.
- Analyzed dietary patterns including traditional southern, traditional northern, and Western diets.
- Employed logistic regression to assess stroke risk, adjusting for cardiovascular risk factors.
Main Results:
- The traditional southern Chinese diet (high rice, vegetables) showed the lowest stroke prevalence.
- The traditional northern Chinese diet (refined grains, salted vegetables) was associated with elevated stroke risk (OR=1.96).
- Western diet (beef, fruit, eggs) also showed elevated stroke risk (OR=2.36), but this was not significant after adjusting for metabolic factors.
Conclusions:
- The traditional southern Chinese diet is associated with a lower prevalence of stroke.
- The traditional northern Chinese diet is linked to an increased risk of stroke.
- Western dietary patterns' association with stroke risk is largely mediated by obesity, hypertension, hyperglycemia, and dyslipidemia.
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