Characteristics of nutrition intervention studies on differences in phenotypes based on individuals’ gut microbiota.
Variable factors | Nutritional Intervention or challenge | Duration | Related disease | Study design | Participants (n) | Major conclusion | Citation |
---|---|---|---|---|---|---|---|
Baseline enterotype | New Nordic Diet (high in fiber and whole grain) vs. average Danish diet | 26 weeks | Metabolic syndrome | Randomized controlled diet intervention | Participants with increased waist circumference ( |
High P/B ratio: greater body fat loss | [66] |
New Nordic Diet (high in fiber and whole grain) vs. average Danish diet | 26 weeks | Metabolic syndrome | Randomized controlled diet intervention | Participants with central obesity and components of metabolic syndrome ( |
Low P/B ratio: greater decreased total cholesterol | [70] | |
Barley kernel-based bread vs. White wheat flour bread | 3 d | NA | Randomized cross-over diet intervention | Healthy adults ( |
High P/B ratio: improvement in glucose and insulin responses | [71] | |
500 kcal/d energy deficit diet | 24 weeks | Metabolic syndrome | Randomized, controlled, parallel design | Participants with overweight ( |
High P/B ratio: increased weight loss and body fat loss | [67] | |
Calorie restriction diet (approximately 40% energy deficit) | 3 weeks | NA | Uncontrolled longitudinal study | Non-obese adults ( |
[69] | ||
Low-capsaicin vs. high-capsaicin | 6 weeks | NA | Controlled cross-over diet intervention | Healthy adults ( |
[72] | ||
Baseline microbial diversity | Weight maintenance diet vs. standard diets supplemented with resistant starch vs. standard diets supplemented with non-starch polysaccharides vs. weight-loss diet | 10 weeks | Metabolic syndrome | Randomized cross-over diet intervention | Obese adult males ( |
Low baseline diversity: more unstable gut microbial change after dietary intervention | [40] |
10 g vs. 40 g of dietary fiber | 5 d | NA | Randomized cross-over diet intervention | Healthy adults ( |
Low baseline microbiota richness: more unstable gut microbial change | [41] | |
Energy-restricted high-protein diet vs. weightmaintenance diet | 6 weeks | Metabolic syndrome | Randomized cross-over diet intervention | Overweight and obese adults ( |
Low baseline bacterial gene count: less improvement in risk of dysmetabolism and inflammation | [43] | |
Calorie restriction diet (approximately 10–40% energy deficit) and increased physical activity | 10 weeks | Metabolic syndrome | Standardized diet advice provided | Overweight adolescents ( |
High baseline bacterial richness, |
[44] | |
TMAO-rich diet vs. choline-rich diet vs. carnitinerich diet vs. control diet | 1 meal | NA | Randomized controlled cross-over diet intervention | Healthy adult males ( |
Lower baseline bacterial diversity, higher Firmicutes/ Bacteroidetes ratio and abundance of |
[45] | |
Baseline specific gut microbial taxa | Sourdough wholegrain bread vs. white wheat bread | 1 week | NA | Randomized cross-over trial | Healthy adults ( |
Relative abundance of |
[46] |
Placebo (maltodextrin, 8 g/ day) vs. inulin (5 g/ day and 8 g/day) | 2 weeks | NA | A doubleblind, placebocontrolled, crossover study | Healthy adults ( |
Lower abundance of |
[48] | |
Energy-restricted, high-protein diet vs. weight maintenance diet | 6 weeks | Metabolic syndrome | Randomized cross-over diet intervention | Obese and overweight adults ( |
Lower abundance of |
[51] | |
Energy-restricted, high-protein diet vs. weight maintenance diet | 6 weeks | Metabolic syndrome | Randomized cross-over diet intervention | Obese and overweight adults ( |
Higher abundance of |
[52] | |
Calorie restriction (30–50% energy deficit) | 6 months | Metabolic syndrome | Standardized diet advice provided | Overweight adults ( |
Relative abundance of |
[53] | |
Low-FODMAP diet vs. Traditional IBS diet | 4 weeks | Gastrointestinal disease | Randomized controlled diet intervention | Adults with IBS ( |
Higher abundance of |
[49] | |
Low-FODMAP diet vs. typical TACD | 2 d | Gastrointestinal disease | Randomized controlled cross-over diet intervention | Children with IBS ( |
Higher abundance of |
[50] | |
Conventional diet (550 mg/70 kg body weight) vs. choline-depletion diet (<50 mg/70 kg body weight) vs. choline-repletion diet (850 mg/70 kg body weight) | 10 d (conventi onal diet), 42 d (depletion diet), 10 d (repletion diet) | NA | Parallel standardized diet | Healthy female adults ( |
Higher abundance of |
[47] |
NA = not applicable; FODMAP= fermentable oligosaccharides, disaccharides, monosaccharides, and polyols; P/B =