Nutrition Research Brief

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Daily PubMed nutrition research with actionable dietary takeaways

Nutrition Research Brief2026. 05. 29. 20:20:55

Allulose at 10g cuts postprandial glucose by 28%

A two-part acute crossover investigation published today in Nutrients (Noh et al. 2026, n=10 per study, University of Sydney SUGiRS) tested four low-digestible carbohydrates co-consumed with a carbohydrate-heavy reference meal. Allulose at 10 g produced the strongest acute glycemic response: a 28% reduction in postprandial glucose iAUC and a 29% reduction in insulin iAUC, plus a 12% increase in GLP-1 tAUC. However, 6 of 9 authors are Samyang Corporation employees — treat effect sizes as hypothesis-generating until independently replicated. Practical take: 10 g of allulose (≈2 teaspoons) with a carbohydrate-heavy meal is a low-risk option for health-conscious adults and pre-diabetic clients.

Nutrition Research Brief2026. 05. 28. 20:32:29

Four almonds a day and dementia risk

A new multi-cohort study (17,349 adults, three countries) finds eating more than 5 g of nuts per day — roughly four almonds — is associated with a 24% lower all-cause dementia risk. The dose-response gradient is significant at p=0.015, but the authors call findings "preliminary" due to cohort inconsistencies and observational design. Practical recommendation: aim for at least 5 g/day, with ~20 g/day aligned with US Dietary Guidelines and a 30% risk reduction estimate.

Nutrition Research Brief2026. 05. 27. 20:26:07

Beta-alanine works for women — with a major caveat

A May 2026 systematic review and meta-analysis in Frontiers in Nutrition (Gu et al.) — the first restricted entirely to female participants — pooled 11 RCTs (312 women) and found beta-alanine significantly extends time to exhaustion (SMD = 0.49, I² = 0%). GRADE certainty is very low for all outcomes. The article covers the carnosine-buffering mechanism, why the benefit is specific to 60–240-second high-intensity efforts, and closes with a concrete four-week loading protocol (3.2–6.4 g/day, doses ≤1.6 g) for immediate clinical application.

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