In adults with metabolic risk, a diet using specially formulated high-protein foods led to a small increase in GLP-1, a hormone that helps regulate blood sugar, while a standard lower-protein diet with the same calories caused a small decrease, indicating the type of protein and how it's processed may influence metabolic hormones.
Evidence from Studies
No evidence studies found yet.
What Would Prove This
Per GRADE and EBM methodology, here is what ideal scientific evidence would look like to definitively prove or disprove this claim, ordered from strongest to weakest.
Whether high-protein functional foods consistently elevate GLP-1 during calorie restriction across diverse populations and food matrices.
A systematic review and meta-analysis of at least 8 RCTs comparing GLP-1 response during 4–12 weeks of calorie restriction in adults with metabolic syndrome, using either novel high-protein functional foods (wheat gluten/whey-enriched) or standard protein sources, with standardized fasting GLP-1 measurements and adjustment for baseline insulin resistance.
Whether the specific high-protein functional food intervention directly causes GLP-1 elevation during calorie restriction.
A double-blind RCT with 80 adults with metabolic syndrome, randomized to either 125 g/day novel high-protein functional foods or 80 g/day standard protein during 8 weeks of 500 kcal/day restriction, with serial fasting and postprandial GLP-1 measurements at baseline, week 4, and week 8, using standardized blood collection with DPP-4 inhibitors, and controlling for meal timing and composition.
Whether habitual consumption of high-protein functional foods predicts higher GLP-1 levels and better metabolic outcomes over time.
A prospective cohort study following 300 adults with prediabetes for 2 years, measuring dietary intake of high-protein functional foods quarterly and fasting GLP-1 levels biannually, adjusting for weight change, physical activity, and medication use.
Whether individuals with higher GLP-1 levels during weight loss are more likely to have consumed high-protein functional foods.
A case-control study comparing 50 adults who showed >20% GLP-1 increase during a 6-week weight loss program (cases) with 50 who showed no change or decrease (controls), matched for age, sex, and baseline HOMA-IR, and retrospectively assessing intake of high-protein functional foods via validated food records.
Whether current use of high-protein functional foods is associated with higher fasting GLP-1 levels in adults with metabolic risk.
A cross-sectional analysis of 500 adults with metabolic syndrome, measuring current dietary intake of high-protein functional foods and single-time-point fasting GLP-1 levels, adjusting for BMI, age, sex, and medication use.