ArticleBrain and behavior2026
Predicting Dietary Impact on Multiple Sclerosis-Related Symptoms With the Gut Microbiome: A Pilot Study Using Unsupervised Machine Learning.
Article in Brain and behavior, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT02914964 (Dietary Approaches to Treat Multiple Sclerosis-Related Fatigue Study), which is not on this map. Not yet cited in PubMed.
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Dietary Approaches to Treat Multiple Sclerosis-Related Fatigue Study
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10 authors.
Funding
Abstract
backgroundMultiple sclerosis (MS) is a neurodegenerative disease where dietary intervention has emerged as a potential adjunct treatment. Recently, the modified Paleolithic elimination (MPE) diet, also known as the Wahls diet, and the low-saturated fat (LSF) diet, also known as the Swank diet, were linked to reduced fatigue and improved quality of life (QoL) in the WAVES study (NCT02914964). However, how diet impacts these outcomes remains unclear. As diet impacts gut microbiota, we investigated whether the baseline gut microbiota can predict response to diet in people with MS (pwMS).
methodsWe performed fecal 16s rRNA sequencing to profile the microbiome changes associated with pwMS receiving the MPE (n = 11) and LSF diet (n = 12). Next, we utilized topic modeling, a machine learning technique, to determine whether baseline microbiome features predicted diet response in the combined MPE + LSF dietary cohort (n = 23).
resultsSpecific genera significantly differed over time on both diets. On the MPE diet, Hungateiclostridiaceae, Ruminiclostridium, and Shuttleworthia decreased, while Coriobacteriaceae Collinsella decreased on LSF. Predictive machine-learning analysis associated a baseline microbiome enriched with Akkermansia, Bacteroides, and Barnesiella with fatigue response in the combined MPE + LSF cohort. For a non-response in Mental QoL improvement in the combined MPE + LSF cohort, our analysis associated an enrichment of Faecalibacterium and Alistipes at the start of the diet. DISCUSSION: Utilizing topic modeling, this pilot study identified baseline microbiota communities linked to improvements in fatigue and Mental QoL in pwMS on dietary intervention. These findings highlight the microbiota's role in dietary response and the potential for personalized nutrition. Given the small cohort and exploratory design, the results are hypothesis-generating and require validation in larger mechanistic studies.
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