Summary
This paper presents a mechanistic-ecological model explaining why alcohol consumption has inconsistent effects on energy intake across dietary patterns. The model predicts that alcohol stimulates FGF21, shifting flavour preferences toward umami; in minimally processed food environments this drives protein-seeking and satiating effects, but in ultra-processed diets rich in umami-flavoured low-protein 'decoy' foods, alcohol instead promotes protein dilution and excess energy intake through attenuated satiation. Population dietary data analysis supported these predictions, suggesting alcohol exacerbates the obesogenic effects of ultra-processed food systems.
Regional applicability
The mechanistic findings are globally relevant given the rising prevalence of ultra-processed diets in the United Kingdom and elsewhere. The model's ecological predictions would apply to UK food systems, where both minimally processed and ultra-processed options compete; local policy and food labelling interventions could leverage these mechanisms to mitigate alcohol's energy-promoting effects in processed-food-dominant populations.
Key measures
Dietary macronutrient energy intake, protein concentration in diet, umami flavour characteristics, FGF21 signalling, dietary pattern classification (minimally processed vs. ultra-processed)
Outcomes reported
The study tested a mechanistic-ecological model predicting how alcohol consumption affects total energy and macronutrient intake depending on dietary pattern (minimally processed vs. ultra-processed foods). Analysis of population dietary data using mixture analysis and nutritional geometry confirmed the model's predictions regarding protein leverage and FGF21-mediated flavour preference shifts.
Topic tags
Dig deeper with Pulse AI.
Ask about this record, its theme or its relevance to UK farming and policy. Pulse AI uses selected catalogue evidence and cites the sources it draws on.