Evidence-Based Diets, Dietary Guidelines & Real-World Evidence

Diet advice is everywhere — but which recommendations actually hold up under scientific scrutiny, and how do they perform once they leave the controlled setting of a trial and meet the messiness of everyday life? Evidence-Based Diets, Dietary Guidelines & Real-World Evidence tackles exactly this question. It examines how dietary recommendations are built from rigorous research, codified into national and international guidelines, and then tested against the realities of how people genuinely eat. In an era of conflicting headlines and fast-moving food trends, this evidence-first lens is what separates durable nutritional guidance from passing fads.

The session works across three connected layers. First, the foundations: how systematic reviews, randomised trials, and meta-analyses establish what we know about diet and health. Second, the translation: how that evidence becomes practical dietary guidelines, food-based recommendations, and public messaging. Third — and increasingly important — the role of real-world evidence drawn from large observational cohorts, electronic health records, and population data that reveal how dietary patterns behave outside the laboratory. Delegates will explore the tensions between these layers, including why guidelines sometimes diverge across countries and how emerging data prompts their revision.

Anyone shaping or applying dietary guidelines — researchers, policymakers, dietitians, and public health professionals — will find this session directly relevant, as will those critically evaluating popular diets against the underlying science. For attendees of the Nutrition Conference, it offers a clear framework for judging evidence quality, understanding how recommendations are formed, and appreciating the growing value of real-world data. By the end, participants will be better equipped to distinguish robust, reproducible findings from weak claims and to ground their own practice in the strongest available evidence.