Oral Lactobacillus Counts Predict Weight Gain Susceptibility: A 6-Year Follow-Up Study

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Johanne Aviaja Rosing, Karen Christina Walker, Benjamin Anderschou Holbech Jensen, Berit L. Heitmann

Background: Recent studies have shown an association between weight change and the makeup of the intestinal microbiota in humans. Specifically, Lactobacillus, a part of the entire gastrointestinal tract's microbiota, has been shown to contribute to weight regulation. Aim: We examined the association between the level of oral Lactobacillus and the subsequent 6-year weight change in a healthy population of 322 Danish adults aged 35-65 years at baseline. Design: Prospective observational study. Results: In unadjusted analysis the level of oral Lactobacillus was inversely associated with subsequent 6-year change in BMI. A statistically significant interaction between the baseline level of oral Lactobacillus and the consumption of complex carbohydrates was found, e.g. high oral Lactobacillus count predicted weight loss for those with a low intake of complex carbohydrates, while a medium intake of complex carbohydrates predicted diminished weight gain. A closer examination of these relations showed that BMI change and Lactobacillus level was unrelated for those with high complex carbohydrate consumption. Conclusion: A high level of oral Lactobacillus seems related to weight loss among those with medium and low intakes of complex carbohydrates. Absence, or a low level of oral Lactobacillus, may potentially be a novel marker to identify those at increased risk of weight gain.
Original languageEnglish
JournalObesity Facts
Volume10
Issue number5
Pages (from-to)473-482
Number of pages10
ISSN1662-4025
DOIs
Publication statusPublished - Oct 2017

    Research areas

  • Obesity, Human gut, Lactobacillus, Weight change, Prospective observational study

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