Home/Issues/Issue 03

In this issue

• 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
  16%

  lower mean exogenous glucose oxidation across 40 to 160 min when dehydrated, p=0.010
• Conference presentation, not peer reviewed 4 Aug 2026 is the date of the NutraIngredients report of the Growth Asia Summit 2026 presentation.

  Half of the female athletes surveyed take no carbohydrate at all during training

  A conference presentation citing Gatorade Sports Science Institute data reported that 50% of female athletes surveyed consumed zero carbohydrate during training, 43% started workouts already underhydrated, and only 20% replaced sodium losses afterwards. None of the figures can yet be checked against a method section.

  Badshah et al. · 4 August 2026

  female-athletescarbohydrateenergy-availabilityendurance-fueling
  50%

  of female athletes surveyed consumed zero carbohydrate during training, as reported; no methods available
• Review and synthesis Date verified

  A review in Science argues that sugars from fruit and honey, not meat, powered the human brain

  A review models obligatory glucose demand across six stages of hominin evolution and argues the roughly fivefold expansion of the brain was underwritten by dietary sugars from fruit and honey rather than by meat. Its headline figures currently trace to press coverage rather than the paper itself.

  Science 393(6811):574 to 581 · Brand-Miller et al. · 6 August 2026 · PMID 42561068

  carbohydrateevolutiongeneral-nutrition
  5fold

  expansion of hominin brain mass over about four million years, argued to rest on dietary sugars; figures from secondary coverage
• Randomized crossover, multi site Published 20 Feb 2026. Press release 4 Aug 2026. Cite the February date.

  Four weeks plant based, and recreational athletes performed about the same

  In a four site randomized crossover using university dining halls, 36 recreational athletes showed no significant difference in a 12 minute run or composite machine strength between a plant based and an omnivorous month, though the strength interval leaned toward the omnivore diet.

  Nutrition Journal · Raygoza et al. · 20 February 2026

  proteinfibergeneral-nutritionresearch-methods
  36.2m

  difference in 12 minute run between diets, 95% CI -130.3 to 57.9 m, p=0.43
• 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
  28%

  reported improvement in Bristol Stool Scale consistency; from trade reporting, baselines and absolute scores unavailable
• Regulatory filing, reported by trade press, not peer reviewed 3 Aug 2026 is the OIRA filing date. Reported by FoodNavigator on 6 Aug 2026.

  FDA's ultra processed food definition arrived, and it is deliberately not a rule

  FDA filed a white paper proposing a definition of ultra processed food with OIRA on 3 August 2026. As a white paper it carries no legal force, does not preempt state definitions such as California's AB 1264, and its actual criteria are not yet public.

  3 August 2026

  food-policygeneral-nutrition
  0legal force

  a white paper creates no obligation, no enforcement hook and no preemption of state definitions
• In vitro and mouse models Date verified

  Two common emulsifiers disrupted the gut barrier in lab and mouse models

  Soy lecithin and DATEM produced dose dependent gut barrier disruption and cytotoxicity at daily exposure doses in gut on a chip models, human colon organoids and mice, with IgE effects in mice and human cells. Not a human study.

  Allergy · Yazici et al. · 8 August 2026 · PMID 42568319

  gut-healthfood-additivesfood-policy
  2emulsifiers

  soy lecithin and DATEM, dose dependent gut barrier disruption at daily exposure doses in lab models, not humans
• Randomized double blind crossover Published 16 Jun 2026, not 1 Aug 2026. The August date is the print issue date. Cite the June date.

  A higher fructose drink did not worsen kidney injury markers under heat and work stress

  In a double blind crossover of 12 healthy adults doing four hours of simulated occupational heat stress, a 55% fructose sports drink and a matched sucrose drink produced the same rise in a kidney stress marker. A useful null on the fructose side of multi carbohydrate fueling, from a June paper.

  American Journal of Physiology · Tourula et al. · 16 June 2026 · PMID 42302737

  carbohydratehydrationendurance-fueling
  12adults

  kidney stress marker rose with heat in both arms and did not differ between fructose and sucrose drinks
• Prospective cohort analysis Date verified

  A large French cohort has examined food additive glutamate and cardiovascular risk

  A new NutriNet-Sante analysis from the Touvier and Srour group looks at food additive glutamate and cardiovascular risk. The digest recorded its existence and provenance; no effect sizes were extracted.

  American Journal of Clinical · Hasenbohler et al. · 8 August 2026 · PMID 42570865

  food-additivesgeneral-nutritiongut-health
  1cohort

  NutriNet-Sante analysis of food additive glutamate and cardiovascular risk; effect sizes not yet extracted
• Narrative review Date verified

  Carrageenan's safety record is under review again, with a new gut mechanism paper alongside

  A comprehensive review asks whether carrageenan is a food additive or a health concern, and a companion mechanism paper reports Bacteroides desulfating carrageenan and feeding hydrogen sulfide production. Reviews and mechanisms, not new human evidence.

  Annals of Nutrition and · Arslan et al. · 6 August 2026 · PMID 42560937

  food-additivesgut-healthgeneral-nutrition
  2papers

  a comprehensive safety review plus a Bacteroides desulfation mechanism paper in the same week; no new human evidence
• Agency case report, not peer reviewed 3 Aug 2026 is the date of the NutraIngredients report; the ANSES report's own publication date was not separately stated in the digest.

  One extreme supplement overuse case ended in liver failure and a transplant

  France's food safety agency ANSES reported liver decompensation, kidney failure and transplant in a 54 year old with pre existing liver disease who massively over consumed mass gainer and whey, rating the supplement link very likely for the liver injury.

  3 August 2026

  supplementsproteinfood-policy
  1case

  liver decompensation, kidney failure and transplant after massive over consumption; ANSES rated the supplement link very likely
• Randomized crossover trial 31 Jul 2026 is the date of the NutraIngredients report; the journal publication date was not verified at source in the digest.

  Beetroot juice nudged strength measures in a small trial of active young men

  In a randomized crossover of 13 physically active young men, 800 mg of nitrate from beetroot juice improved peak torque and power by roughly 3 to 4% at two of three tested speeds. Isokinetic strength, not endurance performance.

  Nutrients 18(14):2377 · 31 July 2026

  supplementsendurance-fueling
  3 to 4%

  improvement in peak torque and power at 60 and 180 degrees per second, n=13, nothing at 240