Why Personalised Nutrition Matters

For decades, nutrition guidance has largely been based on population-level recommendations aimed at improving health outcomes across broad groups. While these guidelines continue to provide an important foundation for healthy eating, a growing body of evidence suggests that individuals can respond very differently to the same foods and dietary interventions. Differences in genetics, metabolism, gut microbiome composition, lifestyle, health status, and environmental factors all contribute to this variability.^1,3,4,5

As rates of obesity, type 2 diabetes, cardiovascular disease, and other lifestyle-related conditions continue to rise globally, healthcare professionals are increasingly recognising that a one-size-fits-all approach may not address individual differences in disease risk and dietary response. Personalised nutrition seeks to address this challenge by tailoring dietary recommendations to individual characteristics, allowing interventions to be more targeted, relevant and practical.^1,5

His approach forms part of a broader shift towards precision health, where prevention strategies are adapted according to an individual's risk profile and biological characteristics. Rather than waiting for disease to develop, personalised approaches aim to identify risk earlier and implement interventions that support long-term health outcomes.^1,5.

Importantly, personalised nutrition extends beyond biology alone. Successful dietary interventions must account for behavioural, cultural, social, and economic factors that influence food choices and long-term adherence. Affordability, accessibility, family habits, food preferences, and motivation all shape an individual's ability to adopt and sustain dietary changes.^5,7

By integrating biological insights with real-world lifestyle considerations, personalised nutrition offers healthcare professionals an opportunity to move beyond generic recommendations towards more patient-centred prevention strategies that support sustainable behaviour change and improved health outcomes.^1,5,7

References

1. Levy M, Thaiss CA, Elinav E. Personalized diets based on the gut microbiome as a target for health maintenance: from current evidence to future possibilities. Nutrients. 2022;14(20):4254.

3. Zeevi D, Korem T, Zmora N, Israeli D, Rothschild D, Weinberger A, et al. Personalized nutrition by prediction of glycemic responses. Cell. 2015;163(5):1079-1094.

4. Berry SE, Valdes AM, Drew DA, Asnicar F, Mazidi M, Wolf J, et al. Human postprandial responses to food and potential for precision nutrition. Nature Medicine. 2020;26(6):964-973.

5. Ordovas JM, Ferguson LR, Tai ES, Mathers JC. Precision nutrition: definition and application. Annual Review of Nutrition. 2023;43:1-24.

7. Livingstone KM, Celis-Morales C, Navas-Carretero S, San-Cristobal R, Macready AL, Fallaize R, et al. Effect of an internet-based, personalized nutrition randomized trial on dietary changes associated with the Mediterranean diet: the Food4Me Study. American Journal of Clinical Nutrition. 2016;104(2):288-297.