A new study published in Nature Medicine suggests that what people eat can be used to predict gut microbiome composition with notable accuracy, adding fresh evidence to the growing case for more personalised nutrition strategies. Researchers analysed app-based diet logs and shotgun metagenomics data from 10,068 participants in the Human Phenotype Project and found that diet significantly predicted microbial diversity, the abundance of most species tested and hundreds of metabolic pathways.
Food processing emerged as a strong signal
According to the study, broader dietary patterns, especially the degree of food processing, were among the strongest predictors of microbial diversity and composition. The researchers also reported that feature attribution identified specific food-microbe links, including coffee with Lawsonibacter asaccharolyticus, yogurt with Streptococcus thermophilus and milk with Bifidobacterium species.
The findings also suggest that these diet-microbiome associations are not fleeting. The team said the relationships persisted over two- and four-year follow-ups, with 82.5% of species showing significant longitudinal tracking between predicted and observed abundances. The authors also developed an exploratory analysis for simulating personalised dietary interventions linked to predicted microbiome shift effects associated with improvements in cardiometabolic health.
Potential relevance for clinical nutrition
For clinicians and nutrition specialists, the study adds momentum to the idea that dietary advice may need to move beyond broad food-group guidance. If validated in further research, microbiome-informed nutrition tools could help identify which foods or dietary patterns are most likely to shape an individual’s gut bacteria and, in turn, their metabolic health.
That said, the findings remain observational and computational in nature, and the authors frame the intervention simulations as exploratory. Still, the scale of the dataset and the depth of the microbial analysis make the study notable for a field that is increasingly focused on tailoring diet to biology rather than relying on one-size-fits-all recommendations.
In the UK, where public health messaging continues to emphasise healthier eating and food quality, the research may also reinforce ongoing efforts to help people reduce highly processed foods and build more balanced diets. The NHS continues to promote practical food swaps and healthier choices through its family nutrition resources and Food Scanner app. ([nature.com](https://www.nature.com/articles/s41591-026-04312-x?utm_source=openai))
As personalised nutrition develops, studies like this one are likely to shape future debates about how diet should be assessed, how risk should be measured and how clinicians might better support patients whose metabolic responses to food differ in subtle but important ways.
Sursa foto: Imagine generată AI
