Plant-based diet quality and gut microbiota in relation to cardiometabolic risk in Korean adults.
Shin JH, Song EJ, Lim MY, Choi HJ, Kim J
Gut Microbiome
Every fermented vegetable, bean dish, or whole grain you grow and eat is quietly shaping the microbial community in your gut — and this study shows that community, in turn, helps determine whether you develop obesity or blood sugar trouble.
Researchers tracked nearly 2,400 Korean adults and found that people who ate more whole plant foods had greater diversity of gut bacteria — a sign of a healthier gut — and were less likely to be obese. People who ate more processed or refined plant foods had worse blood sugar and cholesterol outcomes. Combining information about what people ate with data from their gut bacteria predicted obesity and blood sugar risk better than diet information alone.
Key Findings
A high-quality plant-based diet score was associated with 28% lower odds of obesity (OR = 0.72) and greater gut bacterial diversity.
A low-quality plant-based diet score was linked to 35% higher odds of low HDL ('good') cholesterol (OR = 1.35) and 23% higher odds of elevated fasting blood sugar (OR = 1.23).
Models combining diet quality scores with gut microbiome data outperformed diet-only models in predicting obesity and elevated fasting glucose.
chevron_right Technical Summary
Eating a high-quality plant-based diet — one rich in whole grains, vegetables, and legumes — is linked to lower obesity risk and healthier gut bacteria, while a low-quality plant-based diet (refined carbs, sugary foods) raises the risk of blood sugar problems and poor cholesterol levels.
Abstract Preview
This study investigated the association between plant-based diet quality and gut microbiota and explored whether integrating microbiota profiles with dietary indices improved strength of associatio...
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