Sports Dietitian for Memorial Hermann. ASPDA Conference Chair. Thoughts/opinions are my own.

Joined January 2012
1,064 Photos and videos
Brett Singer MS,RD,CSSD retweeted
ATHLETES, COACHES, NUTRITIONISTS & PHYSIOLOGISTS🏃🚴‍♀️🧪 Our latest paper is out in The Journal of Physiology: physoc.onlinelibrary.wiley.c… - Comparing glucose & glucose–fructose fuelling during running at altitude The sort of altitude used for training camps - 2500m A brief🧵 1/
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Brett Singer MS,RD,CSSD retweeted
#SpeakerSpotlight featuring @jheilesonPhD! His session will focus on long-chain omega-3 fatty acid supplementation on the promotion and preservation of functional skeletal muscle outcomes and cognitive protection. Register for #ASPDA2026 today! buff.ly/f5ORzkz
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Brett Singer MS,RD,CSSD retweeted
Direct-to-consumer gut microbiome tests are everywhere. But how reliable are they? A newly published study in Communications Biology rigorously evaluated seven at-home microbiome testing companies using a standardized NIST-developed stool reference material. The findings are striking. Led by my husband and colleague @thescottjackson and an exceptional interdisciplinary team, this work demonstrates that: 🔬 Variability between companies was on the same scale as biological variability between different donors 🧪 Methodological differences, not biology, were often driving discrepancies 📊 Only 1 of 18 common genera showed less methodological variability than biological variability ⚠️ Health classifications and recommendations could differ substantially for the exact same sample In other words: the same stool sample, sent to different companies, can yield meaningfully different results. Why does this matter? ⛈ Because consumers are using these reports to guide dietary changes, supplement purchases, and even medical decisions. ⚕️ Analytical validity must precede clinical interpretation. This study does not argue against microbiome science. It argues for standards, transparency, and rigor —especially as commercial testing outpaces regulatory oversight. If you are a company working in the microbiome space and want to strengthen analytical performance, validation, and methodological transparency, this is exactly the kind of gap that can be addressed proactively. Scott’s firm, The NEST (zurl.co/glCrZ), works with organizations to improve measurement rigor and reproducibility. Proud of this team for asking the hard questions and advancing the field responsibly. Full paper: zurl.co/vbclB #Microbiome #PrecisionMedicine #IntegrativeMedicine #TranslationalScience #Reproducibility #ConsumerHealth #PublicHealth
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Brett Singer MS,RD,CSSD retweeted
Sports-related concussion (SRC) and its neurological sequela is an important area of research in sports medicine. Treatment and management of SRC requires a detailed understanding of the key indicators of recovery (e.g., symptoms, cognitive function, blood biomarkers). For a detailed and state-of-the-art review on this topic see this recent review published in Sports Medicine and Health Science: doi.org/10.1016/j.smhs.2025.…

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Brett Singer MS,RD,CSSD retweeted
New Paper! The Rules of the Game: Towards a Theory of Practice for Performance Nutritionists in Professional Soccer Using Bourdieu’s Concepts of Habitus, Capital and Field @SportsMedicineJ Link: link.springer.com/article/10… #soccer #nutrition #practice #nutritionist
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Brett Singer MS,RD,CSSD retweeted
OUR LATEST FREE PAPER: From Metabolism to Medals: Revisiting CHO guidelines for fuelling endurance athletes during exercise, thanks to a great co-authorship team @Gonzalez_JT @gareth_wallis @Hearris @timpodlogar @MarcFell1 @pugh_jamie sciencedirect.com/science/ar… @jnutritionorg

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Brett Singer MS,RD,CSSD retweeted
New Paper! Foo et al. (2026) Energy requirements of injured soccer players: a doubly labelled water case series from the English Premier League | Performance Nutrition Journal Link: link.springer.com/article/10… Thanks to all co-authors @JamesyMorton @JohnSpeakman4 #soccer #energy
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