Topic
Every study covered on this subject, newest first.
Thirty healthy adults ate 25 grams of inulin with either a fructan digesting enzyme or a placebo capsule. Symptoms were milder over the following day, while breath hydrogen and methane were identical.
The Journal of Nutrition, · Mah et al. · Biofortis Inc. · 11 August 2026 · PMID 42580594
A modified starch that releases short chain fatty acids in the colon lowered markers of intestinal barrier damage during 90 minutes of cycling. Muscle glycogen and 5 km time trial performance were untouched.
The Journal of Physiology, · Karl et al. · U.S. Army Research Institute of Environmental Medicine · 11 August 2026 · PMID 42581384
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
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
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
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
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
Among female triathletes at the 2024 IRONMAN World Championships, 6 of 23 reached the 8 to 12 g/kg carbohydrate loading guideline, with a mean intake of 6.4 g/kg. Interviews found the shortfall was not a knowledge gap.
European Journal of Sport · Fortis et al. · Liverpool John Moores University · 1 July 2026 · PMID 42274547
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
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