Associations of dietary patterns and pre-eclampsia: a matched case-control study

Area of Science:

• Obstetrics and Gynecology
• Nutritional Science
• Epidemiology

Background:

• Pre-eclampsia is a significant complication of pregnancy with limited understanding of dietary influences in Chinese populations.
• Identifying modifiable risk factors, such as diet, is crucial for preventing pre-eclampsia.

Purpose of the Study:

• To investigate the association between distinct dietary patterns and the prevalence of pre-eclampsia among pregnant women in China.
• To identify specific dietary components that may mitigate pre-eclampsia risk.

Main Methods:

• A matched case-control study involving 440 pairs of pre-eclampsia cases and healthy controls.
• Dietary intake assessed using a 79-item Food Frequency Questionnaire (FFQ).
• Factor analysis identified four dietary patterns: high fruit-vegetable, high protein, high fat-grain, and high salt-sugar. Conditional logistic regression analyzed associations.

Main Results:

• A high fruit-vegetable dietary pattern was associated with significantly reduced odds of pre-eclampsia (OR 0.71, 95% CI 0.55-0.92).
• A high protein dietary pattern also showed a significant association with decreased pre-eclampsia odds (OR 0.72, 95% CI 0.54-0.95).
• A U-shaped association was observed for the high fat-grain pattern, with the lowest odds in the third quartile.

Conclusions:

• Dietary patterns characterized by high intake of fruits, vegetables, and protein are associated with a lower risk of pre-eclampsia in Chinese pregnant women.
• These findings suggest that dietary modifications could be a potential strategy for pre-eclampsia prevention.
• Further research is warranted to confirm these associations and explore underlying mechanisms.