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• Randomized double blind placebo controlled trial 4 Aug 2026 is the date of the trade report. The journal record could not be opened during the sweep, so the publication date was not verified at source.

  A single strain probiotic moved stool consistency more than it moved mood

  In an eight week randomized placebo controlled trial in older adults, Pediococcus acidilactici PA53 was reported to improve stool consistency by 28% and reduce GI symptoms by 9.5%, with shakier headline gains in happiness and sleep. Every figure currently rests on trade reporting.

  The Journal of Nutrition · Wang et al. · 4 August 2026

  gut-healthmicrobiomesupplementsGI-distress
• Randomized crossover trial Date verified

  Getting behind on fluid quietly cuts how much of your fuel you actually burn

  Trained cyclists who finished a 160 minute ride 2.8% of body mass down oxidized about 16% less of the glucose they drank than when fully hydrated, with no change in gut comfort or gut barrier stress markers.

  Journal of Applied Physiology · Macrae et al. · 1 August 2026 · PMID 42420769

  hydrationcarbohydrateendurance-fuelingGI-distress
• Systematic review without meta analysis Date verified

  Bicarbonate gut trouble rises with dose and four strategies may soften it

  A systematic review of 91 sodium bicarbonate supplementation studies found GI symptoms rising dose dependently from 0.2 to 0.5 g/kg, and identified four promising mitigation strategies, none of which has been compared head to head.

  European Journal of Sport · Winter et al. · undefined August 2026 · PMID 42499192

  GI-distresssupplementsendurance-fuelinggut-health
• Expert opinion (Current Opinion article) Date as listed in the digest; not independently verified at source.

  Low FODMAP diets are being handed to athletes who may not need them

  A Current Opinion in Sports Medicine argues that symptom severity, not habit, should decide whether an athlete restricts FODMAPs. Athletes with mild or occasional symptoms are likely better served by a more liberal FODMAP intake that supports gut integrity.

  Sports Medicine · Scrivin et al. · 24 July 2026 · PMID 42496856

  gut-healthGI-distressfodmapfiberendurance-fueling
• Randomized double blind placebo controlled trial Date verified

  A probiotic blend held the gut barrier steady through a competition weight cut

  In 24 elite male combat athletes cutting weight before competition, a seven strain probiotic kept GI symptoms and gut barrier markers roughly stable over four weeks while the placebo group deteriorated sharply.

  Frontiers in Nutrition · Wang et al. · 15 July 2026

  gut-healthmicrobiomeGI-distresssupplements
• Convergent mixed methods, observational The digest lists July 2026 without a day; not verified at source.

  Only about a quarter of women at the IRONMAN Worlds hit carb loading targets

  Among female triathletes at the 2024 IRONMAN World Championships, only 6 of 23 reached the 8 to 12 g/kg carbohydrate loading guideline. Interviews found the gap was not knowledge but travel logistics, nerves, food access, and identity around eating.

  European Journal of Sport · Fortis et al. · undefined July 2026 · PMID 42274547

  female-athletescarbohydrateendurance-fuelingGI-distressfiber
• Human trial; design details not captured from the source Published 9 April 2025. University press page resurfaced it on an undated 2026 URL. Cite the April 2025 date.

  Personalized carbohydrate doses matched a generic 90 g per hour plan with 28 percent less

  A personalized carbohydrate test produced individual doses of 49 to 80 g per hour, averaging about 65, that matched the oxidation achieved by a generic 90 g per hour protocol with 28 percent less carbohydrate, lower perceived effort and less stomach fullness, as reported by the University of Birmingham.

  Performance Nutrition 1:2 · Podlogar et al. · 9 April 2025

  carbohydrateendurance-fuelingGI-distress