Now another shift is emerging - less visible in the headlines, but potentially just as significant in its implications for how organisations plan, buy and operate.
Around 3% of UK adults, approximately 1.6 million people, are currently using GLP-1 medications for weight management, with a further 7% having used them at some point. Demand is growing rapidly, driven primarily by the private market as NHS access remains constrained. In the United States, where roughly one in eight adults reports current use, adoption is further advanced - and that gap matters. The US is not a mirror of the UK, but it is a directional signal of where consumption behaviour could be heading.
These medications suppress appetite and slow gastric emptying - reducing not just how much people eat, but how they think about eating altogether. While still early-stage in the UK, the behavioural signals are already visible. For organisations across retail, consumer brands and hospitality, the time to pay attention is now.
This is not a wellness trend. It is a demand shift.
The early behavioural shift among GLP-1 users is less about what consumers stop buying, and more about how they choose to buy. Smaller meal portions and fewer snacks. More selective, higher-quality choices - “fewer but better” across both retail and hospitality. Greater scrutiny on nutritional value. Reduced impulse purchasing: in grocery, fewer unplanned additions at the point of sale; in hospitality, fewer discretionary add-ons like sides, desserts and drinks. There is also a measurable shift away from ultra-processed foods and sugary drinks, and growing demand for protein-rich and nutrient-dense options.
Retailers are already responding. Ocado reports strong demand for protein-rich staples. Marks & Spencer, Sainsbury’s and Co-op have introduced portion-controlled and nutrient-dense ranges. Sainsbury’s has highlighted a shift toward healthier choices and fresh food; Greggs has pointed to growing demand for smaller portions and lighter options.
Commercial data from the US reinforces the direction. A recent study found that households with at least one GLP-1 user reduced grocery spend by up to 8% within six months, with snack purchases falling by over 10% and spend in fast food and coffee channels declining by 8%. These signals remain early-stage, but their direction is consistent. Organisations that wait for domestic adoption to reach US-scale before acting will find themselves responding to a shift that has already reshaped their category, their competitors’ offers and their customers’ expectations.
What this means for retailers, brands and hospitality
Grocery
UK retail data is beginning to signal a shift. During the Christmas 2024 trading period, grocery sales rose 2.5% in value but fell 0.2% in volume - a movement that likely reflects a combination of factors, but may also capture the early impact of reduced consumption among certain segments.
Traditional growth has been driven by volume and frequency; emerging growth is shifting toward value density and quality. Categories reliant on habitual or impulse consumption - snacks, confectionery, sugary drinks and alcohol - face potential pressure, while fresh foods, fibre and protein-rich options gain relevance. This has implications from pack-size architecture and pricing strategy through to supplier collaboration and demand planning.
The cost-of-living environment complicates this further. Consumers adapting behaviour under GLP-1 are not necessarily trading up; they are trading with greater intention. New and reformulated products must be developed and priced with commercial accessibility in mind. Positioning them purely as premium risks alienating the mainstream consumer base they are designed to serve.
Consumer brands
For manufacturers, this shift is accelerating changes already underway through broader health and wellness trends, but with a more immediate and measurable impact. Pressure is likely to emerge in volume-led and indulgence-driven categories, in legacy pack sizes that no longer align with smaller portions, and in portfolios built around impulse purchasing. At the same time, growth is shifting toward protein-rich, functional and fortified products, and propositions positioned around health, purpose and quality rather than quantity. This is already driving reformulation, portfolio reshaping and accelerated innovation cycles.
But it is as much an operational challenge as a strategic one. Delivering smaller formats, new formulations and faster innovation cycles requires more agile supply chains, closer supplier collaboration, access to new ingredients and capabilities, and procurement models built for speed and flexibility. For many organisations, the ability to execute this shift will be as important as identifying it.
Hospitality
In hospitality, the impact is less about footfall and more about how consumers spend. As consumption becomes more intentional, diners are not necessarily eating out less, but they are making more selective choices: sharing mains, opting for lighter dishes, cutting back on high-margin add-ons. The result mirrors what is being seen in grocery: a move from volume and frequency toward value density and purpose-driven consumption.
The challenge for operators is maintaining profitability per visit, which means rethinking menu engineering, portion formats, pricing structure and how value is communicated. And this is before accounting for the structural pressures already bearing down on the sector, such as rising business rates, wage inflation and persistent cost of living constraints. GLP-1-related demand shifts layer onto these existing pressures rather than replacing them. The challenge is not simply to adapt the menu; it is to redesign the commercial model.
Why this is harder to respond to than it looks
GLP-1 adoption rates are uneven across demographics, income groups and regions. This creates fragmented demand signals, making forecasting more complex precisely when precision matters most. Supply chains and operating models built for scale and consistency must now adapt to greater variability - managing smaller pack sizes, reformulated products, and shorter, more agile innovation and supply cycles. Organisations that treat procurement and supply chain as downstream executors of commercial strategy, rather than as active enablers of it, will find themselves unable to move at the pace the shift demands.
The organisations best positioned to navigate this shift will be working across several fronts: demand and margin modelling by category; portfolio optimisation toward nutrient density and functional value; pack and portion architecture redesign; supplier collaboration to accelerate reformulation and new product development; and supply chain agility to respond faster to evolving consumption patterns. These are not sequential steps. They are simultaneous imperatives, connected by the same underlying question: how do you sustain profitability and relevance when the consumer is choosing less, but choosing more deliberately?
A quieter shift with lasting implications
GLP-1 adoption remains in its early stages, but the sector is already responding to its behavioural signals. Analysts warn the trend could represent a structural shift in demand rather than a temporary diet cycle. If appetite suppression becomes more widespread, the implications for consumption patterns, category performance and commercial economics could be significant.
The winners will not be those who simply shrink portions or add protein claims to existing products. They will be those who redesign their offer and their operations around a more intentional, value-driven model of consumption - aligning portfolio strategy, supply chains and procurement capabilities to support a shift that is already underway.
The shift may be quiet. Its implications are anything but.
Katie Deem
Katie Deem is a procurement and supply chain leader with over 20 years of experience driving growth, transformation, and operational improvement across the hospitality, leisure and travel sectors. As Head of Hospitality, Leisure & Travel at 4C Associates, she helps organisations optimise supply chains, improve margins, deliver sustainable outcomes, and implement large-scale transformation programmes.
Felix Haston
Felix is a H&L SME at 4C Associates with experience delivering procurement, supplier management and operational improvement programmes across multiple sectors. He has led complex procurement activities in highly regulated environments, designed and implemented supplier management frameworks, and developed governance, performance and reporting tools that improve visibility and decision-making.
