An Infancy-Onset 20-Year Dietary Counselling Intervention and Gut Microbiota Composition in Adulthood

Abstract

The randomized controlled Special Turku Coronary Risk Factor Intervention Project (STRIP) has completed a 20-year infancy-onset dietary counselling intervention to reduce exposure to atherosclerotic cardiovascular disease risk factors via promotion of a heart-healthy diet. The counselling on, e.g., low intake of saturated fat and cholesterol and promotion of fruit, vegetable, and whole-grain consumption has affected the dietary characteristics of the intervention participants. By leveraging this unique cohort, we further investigated whether this long-term dietary intervention affected the gut microbiota bacterial profile six years after the intervention ceased. Our sub-study comprised 357 individuals aged 26 years (intervention n = 174, control n = 183), whose gut microbiota were profiled using 16S rRNA amplicon sequencing. We observed no differences in microbiota profiles between the intervention and control groups. However, out of the 77 detected microbial genera, the Veillonella genus was more abundant in the intervention group compared to the controls (log2 fold-change 1.58, p < 0.001) after adjusting for multiple comparison. In addition, an association between the study group and overall gut microbiota profile was found only in males. The subtle differences in gut microbiota abundances observed in this unique intervention setting suggest that long-term dietary counselling reflecting dietary guidelines may be associated with alterations in gut microbiota.

Metagenomic characterization of the maternal prenatal gastrointestinal microbiome by pregravid BMI

“…Targeted dietary counseling and personalized nutrition have been used in chronic illness [ 42 ] and inflammatory bowel disease [ 43 ] as a means of manipulating the gastrointestinal microbiome. Dietary interventions [ 44 ] and probiotic supplementation [ 45 ] are avenues of intervention research that could mitigate adverse pregnancy and childhood outcomes. Although this analysis was not examining the potential of the microbiome to be obesogenic or a modifiable factor for obesity, future studies should consider robust experimentation, for both maternal and infant outcomes, regarding the possibility.…”