Technology
Nutrition5k: Towards Automatic Nutritional Understanding of Generic Food
What the Nutrition5k food-image dataset contains, what its small human comparison shows, and why benchmark results do not establish consumer-app accuracy.
2 min read
Research
A closer look at the science behind nutrition.
Evidence-based articles exploring the science of nutrition, metabolism, and health technology.
Nutrition
Healthy Eating Index (HEI-2020): The Science of Measuring Diet Quality
How HEI-2020 and AHEI-2010 differ, what diet-quality cohort studies show, and why a score is not an individual diagnosis.
2 min read
Nutrition
NOVA Food Classification: Understanding Ultra-Processed Foods
The four NOVA food groups, a controlled feeding trial, and the strengths and limits of evidence linking ultra-processed foods with health outcomes.
3 min read
Nutrition
Dietary Reference Intakes: The Science Behind Nutrient Recommendations
What EAR, RDA, AI, and UL mean, how Daily Values differ, and why a single day of estimated intake cannot diagnose nutrient deficiency.
2 min read
Nutrition
Global Dietary Guidelines on Sugar, Sodium, and Fat
A dated comparison of WHO, American Heart Association, and 2025-2030 US guidance on sugar, sodium, and saturated fat, with definitions and primary sources.
3 min read
Behavior
The Three-Process Model of Alertness
How sleep history, circadian timing, and sleep inertia enter an alertness model, and what the original papers do and do not validate.
2 min read
Behavior
SAFTE/FAST: Understanding Fatigue Prediction
What the SAFTE fatigue model represents, how sleep-restriction experiments inform it, and why its outputs are not direct measures of individual capacity.
2 min read
Behavior
Dehydration and Cognitive Performance: What Meta-Analyses Show
What two meta-analyses found about dehydration and cognition, including corrected effect estimates and uncertainty about a universal 2% threshold.
2 min read
Metabolism
The PREDICT Study: Personalized Nutrition at Scale
What PREDICT 1 measured in UK and US adults, what individual metabolic variation means, and the limits of claims about personalized nutrition.
2 min read
Metabolism
Chrononutrition: How Meal Timing Affects Metabolic Health
Randomized trials and a 2026 follow-up show why meal-timing results depend on the comparison, population, duration, and outcome.
3 min read
Metabolism
Glucose Variability and Cognitive Performance
What studies of glucose variability actually measured, why evidence from older adults with diabetes has limits, and what remains unproven about cognition.
2 min read
Metabolism
Caffeine Pharmacokinetics: The Science Behind Your Coffee
Evidence on caffeine, alertness, sleep timing, and individual variation, without a universal optimal dose or a guaranteed safe limit.
3 min read