October 25, 2026 · Sports, Health & Nutrition Daily Digest
A digest of sports, fitness, health, and nutrition developments compiled for October 25, 2026, with summaries, links, and commentary.
I. Nutrition and Diet
1. Pediatric Research: in a cross-sectional secondary analysis of 769 Spanish adolescents, isocaloric replacement of animal protein with plant protein tracked higher grades, about 1.1 GPA points per 5% of energy in sensitivity models (Nutrition)
Summary:
José Francisco López-Gil and colleagues published a secondary analysis of the Eating Healthy and Daily Life Activities (EHDLA) study on October 23 in Pediatric Research. The analytic sample was 769 adolescents (55.5% girls, ages 12–17). Diet came from a 45-item food-frequency questionnaire, and academic performance from grade-point average plus language, mathematics, and foreign language. In isocaloric substitution models adjusted for sociodemographic, lifestyle, and anthropometric factors, replacing animal protein with plant protein was associated with higher scores on every academic outcome (all P < 0.001). The abstract states that substituting 5% of total energy was associated with a higher grade-point average and subject scores, driven mainly by replacing protein from red and processed meat and from certain fish. The abstract does not print the primary-model coefficient. In the supplement, a sensitivity model that uses the father's education gives +1.19 grade-point points per 5% of energy (95% CI 0.68–1.70), language 1.13 (0.66–1.61), mathematics 1.18 (0.66–1.70), and foreign language 1.40 (0.81–1.98); with the mother's education, the grade-point estimate is 1.07 (0.64–1.50). This is a cross-sectional substitution model, not a feeding trial.
Links:
- Pediatric Research — Isocaloric replacement of animal protein with plant protein and academic performance in Spanish adolescents
- Pediatric Research — Sensitivity coefficients in the supplement
Commentary:
Moving the share of red and processed meat toward beans, whole grains, and nuts tracked higher grades in this questionnaire study, at roughly one point per 5% of energy in the sensitivity models, and the analysis does not show that one swapped meal raises a child's marks.
2. Translational Exercise Biomedicine: after three weeks of vegan eating, 24 active adults kept isometric strength and VO2peak and did not lose muscle mass, while the ad libitum arm ate less energy and protein (Nutrition)
Summary:
Alexander Pohl of the University of Hildesheim, Sebastian Gehlert of the German Sport University Cologne, and colleagues published a randomized trial on October 22 in Translational Exercise Biomedicine. Twenty-four healthy, physically active adults who had been eating an omnivorous diet were randomized, after a baseline phase of standardized training and dietary assessment, to three weeks of an ad libitum vegan diet (VEG) or an isocaloric vegan diet matched to baseline energy and macronutrients (VEGISO). Everyone completed two strength and two endurance sessions a week. The primary outcomes, maximal isometric strength and peak oxygen uptake, were maintained in both groups. Body mass and body fat fell in both (P < 0.05), and muscle mass did not change. Energy and protein intake fell only in VEG (P < 0.01); VEGISO stayed stable. Fiber intake rose in both (P < 0.01). Reported sleep quality improved in both (P < 0.05), and general physical well-being improved only in VEGISO (P < 0.05). Everyone finished. There was no omnivorous comparator during the intervention. The abstract says participants were also assessed after returning to an omnivorous diet, and it does not give numbers for that phase.
Links:
Commentary:
People who are already training can hold strength and peak oxygen uptake across three weeks of vegan eating when the calorie-matched arm keeps protein intake up; the ad libitum arm lost energy and protein, so these three weeks are a short diet test rather than a season-long plan.
II. Exercise and Training Science
3. BMC Geriatrics: 12 weeks of elastic-band training in 40 older women at risk of sarcopenia improved strength, gait, and selected cardiac ultrasound measures, and the authors do not call it a heart-brain-muscle causal chain (Training)
Summary:
Yanhong Su of Liaoning Normal University, JianLin Wang of the Second Hospital of Dalian Medical University, and colleagues published a randomized trial on October 22 in BMC Geriatrics. Forty older women (mean age 76.4±5.8 years, Ishii score at least 120) were assigned to health education or to health education plus 12 weeks of elastic-band resistance training. The training group improved muscle strength and physical function (P < 0.05) and lowered the Ishii score (P < 0.01). Stride length increased and double-support time fell (both P < 0.01). Ultrasound showed increases in biceps brachii thickness, rectus femoris cross-sectional area, rectus femoris pennation angle, and interventricular septal thickness (P < 0.05), and in left-ventricular ejection fraction and the E/A ratio (P < 0.01). After correction for multiple comparisons, beta-band corticomuscular coherence area increased for vastus lateralis and biceps femoris (adjusted P < 0.05). The authors describe parallel adaptations and say the trial does not directly demonstrate integrated regulation of a heart-brain-muscle network. The abstract does not give absolute changes in strength or thickness. Ethics approval LL2023038.
Links:
Commentary:
For women in their mid-seventies who already meet an Ishii threshold for sarcopenia risk, 12 weeks of elastic-band work plus the same health education tracked better strength and gait; the sample is 40 women and the abstract gives no kilogram or centimeter changes, so this is a starting plan to discuss with a rehabilitation clinician.
4. Journal of Clinical Medicine: 50 people with early Parkinson's who spent about 20 minutes of each class on structured turning were 1.79 seconds faster on the Timed Up and Go at 12 weeks, with unblinded assessment (Training)
Summary:
Kübra Uzun, Ömer Şevgin, and colleagues at Üsküdar University published a randomized trial on October 16 in the Journal of Clinical Medicine. Fifty people with Parkinson's disease, Hoehn-Yahr stages 1–2 and ages 50–70, trained three times a week for 12 weeks. In the turning group, 18–20 minutes of each 45–50 minute session were structured turning and the rest a reduced conventional program (n = 25); the control group did the full conventional program (n = 25). The primary outcome was the Timed Up and Go. Outcome assessment was not blinded, and groups were compared with baseline-adjusted analysis of covariance. Everyone finished. Adjusted differences were −1.79 seconds on the Timed Up and Go (95% CI −1.98 to −1.61), +0.116 m/s in gait speed (0.108 to 0.124), and +1.84 points on the Berg Balance Scale (1.50 to 2.17), all P < 0.001. The authors say the effects were unusually large, that test tasks were partly practiced in training, and that falls and turning quality were not measured. Registration NCT07442370.
Links:
Commentary:
In early Parkinson's, setting aside about 20 minutes of a session for turning lined up with a 1.79-second faster Timed Up and Go at 12 weeks; the interval is very narrow, assessors were not blinded, and the test movements were practiced in class, so a therapist should set the personal target from fall records.
III. Sleep and Mental Health
5. Nursing Research: in 196 adults with prediabetes and short sleep, adding a sleep intervention to lifestyle coaching did not improve time with glucose above 140 mg/dL (Sleep)
Summary:
A two-arm parallel randomized trial was published on October 22 in Nursing Research. Participants had A1c-confirmed prediabetes and actigraphy-confirmed short sleep. The 8-week intervention was delivered one-to-one by privacy-compliant video. The primary outcome was the percentage of time sensor glucose was above 140 mg/dL. A modified intention-to-treat analysis included 196 participants. The glucose outcome showed no significant between-group difference. Both groups increased sleep and lost weight within group, with no significant between-group difference on either. The lifestyle-plus-sleep group improved more on self-reported sleep quality and daytime sleepiness. Sleep onset moved earlier only in the lifestyle-plus-sleep group, and the between-group difference was not significant. In a post hoc analysis, earlier sleep onset was independently associated with greater weight loss regardless of assignment, and changes in sleep duration were not. The abstract does not give the coefficient for that post hoc association.
Links:
Commentary:
For prediabetes with habitually short sleep, eight weeks of sleep coaching on top of a lifestyle program did not separate the groups on time spent above 140 mg/dL; the post hoc analysis tied larger weight loss to an earlier sleep onset, and the change in sleep duration did not show the same association.
IV. Public Health and Disease Prevention
6. Breast Cancer Research and The Guardian: among 86,564 breast-cancer diagnoses in England, the adjusted odds of a screening diagnosis were as low as 0.67 for people of mixed ethnicity (Public health)
Summary:
Tetyana Perchyk, Robert Kerrison, and colleagues at the University of Surrey published a nationwide population study on September 15 in Breast Cancer Research, funded by Breast Cancer Now. The Guardian reported it on October 25. Clinical Practice Research Datalink and cancer-registration tumour and treatment data covered 86,564 adults diagnosed from January 1, 2009, through December 31, 2018. The Guardian described the window as 2009 to 2019; the figures below follow the journal abstract. Adjusted odds ratios for diagnosis via screening were 0.87 for Asian ethnicity (95% CI 0.79–0.97), 0.71 for Black ethnicity (0.62–0.82), 0.67 for mixed ethnicity (0.51–0.88), 0.89 for deprivation (0.85–0.95), and 0.87 for severe mental illness (0.78–0.98). Those groups were more often diagnosed through urgent suspected-cancer referral and/or emergency presentation; the abstract does not give odds ratios for those two routes. Time to diagnosis was longer for people with a learning disability (adjusted time ratio 1.18, 1.06–1.32). Time to treatment was longer for a learning disability (1.08, 1.03–1.13), severe mental illness (1.07, 1.04–1.09), Black ethnicity (1.10, 1.07–1.13), and Other ethnicity (1.06, 1.03–1.10). This is an observational study of diagnostic routes, not a trial of a new screening interval.
Links:
- Breast Cancer Research — Inequalities in route, time to diagnosis, and time to treatment for breast cancer in England
- The Guardian — October 25 report on the University of Surrey analysis
Commentary:
At the screening age used where you live, the practical check is whether the invitation arrived and whether you attended; this paper reports route differences for breast-cancer diagnoses in England from 2009 through 2018, with an adjusted odds ratio of 0.67 for a screening diagnosis in people of mixed ethnicity, and it does not reset an individual screening interval.
V. Sports Medicine
7. JAMA Pediatrics: in 210 people aged 11–18 with concussion, remote subthreshold aerobic exercise improved symptoms more than stretching at three months, and the group difference was gone at six months (Sports medicine)
Summary:
Sara P. D. Chrisman and colleagues at Seattle Children's Research Institute published a randomized trial online on October 19 in JAMA Pediatrics, with an institute Q&A the same day. From March 2021 to October 2025, outpatient sites in Washington, Utah, Wisconsin, and Oregon enrolled people aged 11–18 whose concussion was up to one year old. Of 210 participants, 122 (58.1%) were female, mean age was 15.1±2.2 years, and mean time since injury was 73.3±63.3 days. The aerobic group started at 60% of maximum heart rate, raised intensity and duration over six weeks on weekly video calls, and used activity trackers. The control group did stretching with similar weekly calls. At three months, symptoms improved more (beta −3.15, 95% CI −6.05 to −0.25, adjusted P = 0.04) and health-related quality of life was higher (beta 4.15, 0.64–7.66, adjusted P = 0.04). At six months the group difference was no longer significant. The difference in symptom-recovery rate was −0.68 (−2.22 to −0.04, P = 0.002). Sleep, depression, and anxiety improved in all participants, with no group difference. The benefit was significant only for people less than three months from injury: symptoms beta −4.44 (−7.99 to −0.90, unadjusted P = 0.01) and quality of life beta 6.64 (2.55–10.72, unadjusted P = 0.002). Registration NCT04688255.
Links:
- JAMA Pediatrics — Mobile subthreshold exercise for youth with prolonged concussion recovery
- Seattle Children's Research Institute — October 19 Q&A
Commentary:
For a teenager still foggy, headachy, or easily fatigued within three months of a concussion, a clinician can use weekly video calls to keep aerobic work under the heart rate that brings symptoms on, and this trial found a larger symptom improvement than stretching at three months; past three months, and by six months, the same program did not show that group difference.
VI. Evidence and Clarification
8. Cureus: in a census of US supplement labels, 5.1% of 11,367 adult products direct a vitamin B6 dose at or above 100 mg/day (Evidence)
Summary:
A census of the US National Institutes of Health Dietary Supplement Label Database was published on October 20 in Cureus. The pull was October 4, 2026, plus eight labels from an extra spelling search on October 13, 2026. Of 16,951 labels, 15,091 stated a vitamin B6 amount, forming 11,913 products after package sizes were merged, including 11,367 adult products. The median maximum directed dose of adult products was 10 mg/day (interquartile range 2.2–25). Five hundred seventy-five products (5.1%, 95% CI 4.7%–5.5%) directed 100 mg/day or more, 167 (1.5%) more than 100 mg/day, and 10 at least 500 mg/day, with the highest at 1,000 mg/day as the compound weight of a pyridoxine salt. Of those 575, 323 (56.2%) were not sold as vitamin B6 or B-complex products. Another 4,399 (38.7%) exceeded 12 mg/day and 1,034 (9.1%) exceeded 50 mg/day. Directions on 22 products gave a stated child or teen age a dose above the tolerable upper intake level for that age, up to 250 mg/day for ages 4 and older (upper level 40 mg/day). Verification excluded 12 inconsistent records and corrected 21 mis-encoded serving records. This is a label census and did not measure neuropathy.
Links:
Commentary:
The number to read on the back of the bottle is milligrams per day, including combination products that are not named as vitamin B6; the US adult upper level is 100 mg/day, about one in twenty adult products in this October 4 label census meet or exceed it, and new numbness or tingling is a reason to stop the high-dose product and get clinical care.
9. US Food and Drug Administration: on October 23 the agency warned that Ultra Bon contains diclofenac not listed on the label (Evidence)
Summary:
On October 23 the US Food and Drug Administration advised consumers not to buy or use Ultra Bon. The product is promoted and sold for arthritis, pain, and osteoporosis on various websites, including eBay, and possibly in some retail stores. Laboratory analysis confirmed that it contains diclofenac, which is not listed on the label. Diclofenac is a nonsteroidal anti-inflammatory drug and can raise the risk of heart attack and stroke, can cause bleeding, ulcers, or perforation of the stomach or intestine, and stacks with other drugs in the same class. The agency asks health professionals and consumers to report adverse events to MedWatch and states that it cannot test every product sold as a dietary supplement that may contain hidden ingredients.
Links:
Commentary:
Anyone using Ultra Bon as a joint or bone supplement should stop; the product contains diclofenac that is absent from the label, and that dose stacks with other nonsteroidal anti-inflammatory drugs already being taken.
10. UK Food Standards Agency: on October 20 the agency found no new safety concern for Schizochytrium sp. ATCC PTA-9695 oil at 1 g DHA/day in supplements for ages 3 and older (Evidence)
Summary:
The Food Standards Agency and Food Standards Scotland published a safety assessment on October 20 of a change in conditions of use for the novel food oil from Schizochytrium sp. (ATCC PTA-9695). DSM Nutritional Products Europe Ltd. applied in July 2025 to raise the daily intake in food supplements to 1 g DHA/day for people aged 3 years and older, including pregnant and lactating women, while keeping 250 mg DHA/day for the general population under 3 years, in line with other high-DHA Schizochytrium oils. The assessment considered safety only and did not consider health benefits or claims. The two agencies concluded that the applicant had provided enough information to show that the change raised no safety concerns for the target populations, and that the anticipated intake and intended use were not nutritionally disadvantageous. The opinion is theirs. The production process and specification match the existing authorisation and were not reassessed.
Links:
Commentary:
The October 20 opinion says this specific algal oil raised no new safety concern at 1 g DHA/day in supplements from age 3, with 250 mg still the figure under age 3, and it explicitly does not assess benefit; it is not a recommendation to take 1 g of algal DHA for heart or brain outcomes.
Today's Summary
- Diet: In a cross-sectional substitution model of 769 Spanish adolescents, replacing animal protein with plant protein tracked higher grades, at about one grade-point per 5% of energy in sensitivity analyses; 24 active adults kept strength and peak oxygen uptake after three weeks of vegan eating, with no omnivorous arm during the intervention.
- Training: Twelve weeks of elastic-band work in 40 older women at risk of sarcopenia tracked better strength, gait, and selected cardiac ultrasound measures, which the authors describe as parallel adaptations; 50 people with early Parkinson's who gave about 20 minutes of class to turning practice were 1.79 seconds faster on the Timed Up and Go, and assessment was not blinded.
- Sleep and screening: Among 196 adults with prediabetes and short sleep, adding a sleep intervention did not separate the groups on time with glucose above 140 mg/dL; among 86,564 breast-cancer diagnoses in England, the adjusted odds ratio for a screening diagnosis was 0.67 for people of mixed ethnicity.
- Supplements: A US label census found that 5.1% of adult vitamin B6 products direct at least 100 mg/day; the FDA found unlabeled diclofenac in Ultra Bon; the UK Food Standards Agency found no new safety concern for one Schizochytrium oil at 1 g DHA/day and did not assess efficacy.
Daily Framing:
October 25 in the sports, health, and nutrition cycle was a day for checking the boundary of each result: plant protein and grades, three vegan weeks and performance, elastic bands and a heart-brain-muscle story, turning practice in Parkinson's, and aerobic work after youth concussion each stay inside their study design, while attending a screening invitation and reading the milligrams on a supplement label are the two checks a reader can make today.
This digest is compiled from real-time search results and is for reference only.