Engy › Who's who in longevity › Nicholas Tiller
At a glance
- Researcher at the Lundquist Institute for Biomedical Innovation at Harbor-UCLA Medical Center (California).
- Specialist in ultramarathon physiology: a 2024 review he co-authored concluded that muscle damage, more than energy or endurance, is the main limit on performance.
- Wrote The Skeptic’s Guide to Sports Science (2020) on myths in the health and fitness industry and how to read scientific claims critically.
- Analysed whether sports gels contain what the label promises, and helped launch the idea of a ‘nontechnical summary’ for sports science papers to reduce misunderstanding.
- Tested in BMJ Open (2026) how accurately AI chatbots answer medical questions and how reliable their referencing is.
- Relevant if you want to find your own way through longevity and fitness claims: his work is about what the evidence does and does not say.
Recent
- Study Generative artificial intelligence-driven chatbots and medical misinformation: an accuracy, referencing and readability audit
- Study What's (Not) in Your Supplement? An Energy and Macronutrient Analysis of Commercially Available Carbohydrate Gels
- Study Decoding Ultramarathon: Muscle Damage as the Main Impediment to Performance
- Study The Nontechnical Summary: A New Initiative to Enhance the Translation of Sports Science Research and Reduce the Spread of Misinformation
- Study Sex differences in ultramarathon performance in races with comparable numbers of males and females