More than two million people in the UK are now using weight-loss medications such as Wegovy and Mounjaro, but the drugs are doing more than just reducing waistlines — they are quietly reshaping how the nation shops.
A study by market research company Worldpanel by Numerator, based on survey responses and purchase data from more than 11,000 households in February, found that households with at least one user of GLP-1 weight-loss drugs spent on average £418 less on groceries in the year after starting the medication compared with non-users. That adds up to a £780m reduction in grocery spending nationally.
“Weight-loss jab users spend £418 less on groceries annually, reshaping demand for food and other products.”
The finding chimes with a peer-reviewed study from Cornell University published last year, which showed US households with a member taking weight-loss drugs cut grocery spending by 5% within six months — rising to 8% among higher-income families.
But the changes go beyond simply spending less. Worldpanel found that users shifted what they buy: they bought less chocolate, pastries and alcohol, and more fruit and protein-rich foods such as prawns — a likely result of feeling fuller for longer and being less prone to eat out of boredom. At the same time, purchases of chewing gum, mouthwash and hair dyes increased, products that counter common side effects of GLP-1 medications like thinning hair and bad breath.
“This isn’t simply a story of shrinking demand. It’s also a story of shifting demand,” Nishita Pattni, a senior consultant at Worldpanel by Numerator, told the BBC.
Cornell’s research found users cut back most on calorie-dense, processed foods, spending 10% less on savoury snacks, and also bought less cheese, butter, soft drinks and eggs, while buying more yoghurt. However, the study noted that when users stopped taking the medication, households “revert to their pre-adoption grocery spending patterns” and even shifted toward slightly less healthy grocery baskets.
The impact extends beyond supermarket aisles. Nearly two-thirds of those surveyed by Worldpanel reported cutting out or trying to reduce meals out since starting their jabs.
While the immediate effect is a notable dent in spending on food and drink, the longer-term picture may depend on how many users stay on the drugs — and whether the new habits stick. Over half of weight-loss jab users surveyed by Worldpanel describe their… (the source text cuts off).
