Nearly 500,000 Australians now use GLP-1 weight-loss drugs and their food buying is shifting, shrinking indulgence and large-portion categories. Rabobank estimates a 1 to 2% cut to food and beverage consumption as Nestle, Danone and Coca-Cola reformulate toward protein and lower sugar. The brief covers how Australian FMCG and grocery marketers should respond.
The Take: Half a million Australians are now on weight-loss drugs, and they are eating differently, which means a chunk of the Australian grocery and fast-food market is quietly shrinking. Sit with that. If your brand sells indulgence, volume or the big share-size, the room you are marketing to is getting smaller every month. No amount of creative fixes a demand curve that has already turned.
The pattern: Nearly 500,000 Australians, almost 2% of adults, now regularly use GLP-1 medicines, with sales up roughly tenfold from 57,941 units in May 2020 to 496,875 in April 2025. These are not fad dieters. They are a growing, mostly permanent cohort whose appetite for snacks, sugar and large portions drops sharply once they start. The Australian numbers are still climbing.
Zoom out: The effect is already reshaping what global food companies make. Rabobank estimates GLP-1 use is cutting food and beverage consumption by 1 to 2%, with Nestle, Danone and Coca-Cola all reformulating toward high-protein, low-sugar products. A one to two percent cut sounds small until you remember these are categories that fight over fractions of a share point. The Australian market is not immune to a shift this structural.
Australians now regularly use GLP-1 medicines, almost 2% of the adult population (UNSW)
The trade-off: Chasing this cohort with lighter line extensions is tempting, but it can cannibalise the core without winning the switcher, who is buying less of everything rather than swapping brands. The sharper move is to decide honestly whether you are defending a shrinking core or repositioning around protein, portion and function before the category average catches up to you.
For Australian operators: Pull your own category basket data and look for the early signal, a quiet decline in units per shop among your heaviest buyers. If you sell food, drink or hospitality, model a market that is 1 to 2% smaller each year on volume and decide now whether you compete on price or reposition on function. Marketers in adjacent categories, from apparel to travel, should watch too, because money not spent on snacks and bigger portions does not vanish, it moves.