Contrasting dietary patterns remodel gut microbial function and generate multi-omic signatures associated with cardiometabolic markers.

In 30 seconds

This randomized crossover trial examined the effects of a Healthy Australian Diet (HAD) versus a Typical Australian Diet (TAD) on gut microbiome and cardiometabolic markers in 34 Australian adults. The study found that HAD led to significant changes in microbial function, with 99 functional pathways increasing, and strong dietary response discrimination (held-out accuracy 91.7%).

Key findings

• HAD reduced taxonomic and functional alpha diversity compared to baseline, while TAD showed no change.
• 105 functional pathways differed between diets, with 99 increasing after HAD.
• 77 individual omic feature-cardiometabolic outcome associations were identified, linked to cholesterol and blood pressure.
• Multi-omic integration achieved a held-out accuracy of 91.7% in dietary response discrimination.

Why it matters

Understanding how dietary patterns influence gut microbiome function and metabolic health can inform personalized nutrition strategies. This research highlights the potential for dietary interventions to modulate cardiometabolic risk factors.