Latest updates
- Is the benefit of supplements for gamers overstated?New · Nov 10, 2026
A 2026 meta-analysis of esports trials found a pooled effect of g = 0.92. After adjusting for likely unpublished negative results, the estimate fell to 0.49, about half.
Source:Effects of nutritional interventions on competitive performance and dose‒response relationships among esports players of different skill levels: a systematic review and three-level meta-analysis · Yao J, He J, Hu E. J Int Soc Sports Nutr, 2026
- Does caffeine help esports players?New · Nov 10, 2026
A 2026 meta-analysis of 13 small trials in 743 esports players found better reaction speed and thinking scores with supplements, most of them with caffeine. But the certainty was low for most results.
Source:Effects of nutritional interventions on competitive performance and dose‒response relationships among esports players of different skill levels: a systematic review and three-level meta-analysis · Yao J, He J, Hu E. J Int Soc Sports Nutr, 2026
- Can a strong carbohydrate drink upset your stomach in the heat?New · Nov 10, 2026
In a 2026 review of cycling trials in the heat, a 12% glucose drink (about 99 g per hour) caused more nausea and stomach upset than a 6% drink or placebo. Only 2 of the 9 trials measured gut symptoms.
Source:Carbohydrate supplementation for endurance exercise in the heat: a systematic review with practical recommendations · Salame A, Brown D, Oueijan K, et al. J Int Soc Sports Nutr, 2026
- Do carbohydrate drinks help in hot weather?New · Nov 10, 2026
A 2026 review of 9 small cycling trials in hot conditions found that carbohydrate drinks clearly improved performance in 5 trials and made no significant difference in 4. The authors call the benefit inconsistent.
Source:Carbohydrate supplementation for endurance exercise in the heat: a systematic review with practical recommendations · Salame A, Brown D, Oueijan K, et al. J Int Soc Sports Nutr, 2026
- Does creatine add muscle or just water weight?New · Nov 10, 2026
A review of 143 trials in adults found that creatine added 0.82 kg of fat-free mass and 0.86 kg of body weight compared with placebo, and the evidence was rated high certainty. Some of the gain may be water.
Source:Creatine supplementation protocols with or without training interventions on body composition: a GRADE-assessed systematic review and dose-response meta-analysis · Pashayee-Khamene F, Heidari Z, Asbaghi O, et al. J Int Soc Sports Nutr, 2024
- Does creatine improve anaerobic power in soccer players?Updated · Nov 10, 2026
A 2019 meta-analysis reported a large benefit of creatine on the Wingate cycling test. But the result came from two small trials: one in American football players, and one in 19 young soccer players that found no significant difference against placebo.
Source:Effects of Creatine Supplementation on Athletic Performance in Soccer Players: A Systematic Review and Meta-Analysis · Mielgo-Ayuso J, Calleja-Gonzalez J, Marqués-Jiménez D, et al. Nutrients, 2019
- Is creatine safe to take every day?New · Nov 10, 2026
A sports nutrition society says weight gain is the only side effect that studies report consistently, and that up to 30 g a day for up to 5 years caused no clinically significant harm. This is an expert opinion, and a supplement trade group paid for it.
Source:International Society of Sports Nutrition position stand: safety and efficacy of creatine supplementation in exercise, sport, and medicine · Kreider RB, Kalman DS, Antonio J, et al. J Int Soc Sports Nutr, 2017
- Does creatine make soccer players faster?Updated · Nov 10, 2026
A review of 41 studies in soccer players found no consistent sprint benefit from creatine, and rated the certainty of the evidence as very low.
Source:Creatine supplementation in soccer players: a systematic review · Ashtary-Larky D, Candow DG, Antonio J, et al. J Int Soc Sports Nutr, 2026
- Do probiotics help athletes sleep better?New · Nov 10, 2026
A 2026 review of six small trials found that 9 of 12 sleep outcomes in athletes favoured probiotics or synbiotics. But every trial had some risk of bias, and two of the nine results do not hold up on a closer look.
Source:The effect of probiotic and synbiotic supplementation on sleep parameters in exercised population: a systematic review and synthesis without meta-analysis (SWiM) of randomized controlled trials · Salehi Asl M, Ahmadi F, Ershadmanesh M, et al. J Int Soc Sports Nutr, 2026
- Does creatine burn fat?New · Nov 10, 2026
A review of 143 trials in adults found that creatine did not change total fat mass (+0.05 kg). Body fat percentage fell by only 0.28 percentage points, most likely because fat-free mass rose, not because fat was lost.
Source:Creatine supplementation protocols with or without training interventions on body composition: a GRADE-assessed systematic review and dose-response meta-analysis · Pashayee-Khamene F, Heidari Z, Asbaghi O, et al. J Int Soc Sports Nutr, 2024
- Does creatine harm the kidneys?New · Nov 10, 2026
A 2025 meta-analysis of 12 studies found that creatine raised serum creatinine a little but did not change the kidney filtration rate (GFR). Few of the people had kidney disease.
Source:Effect of creatine supplementation on kidney function: a systematic review and meta-analysis · Naeini EK, Eskandari M, Mortazavi M, et al. BMC Nephrol, 2025