UK adults eat more protein, less carbs, fiber still lags

UK adults have moved toward higher protein and lower carbohydrate intake over the past decade, but the bigger nutrition gap has barely budged: fibre is still far below the level public-health planners want to see. The latest National Diet and Nutrition Survey, the government’s main measure of diet and nutrient intake, covers data collected from October 2019 to July 2023 and was published on June 11, 2025.

That survey sits at the centre of UK nutrition policy for a reason. It is a continuous, nationally representative study of people living in private households, fielded since 2008, and it is used to monitor progress toward diet and nutrition objectives and to shape food policy across the United Kingdom. Even with fieldwork suspended from March to October 2020 during the pandemic, the long view still shows the same direction of travel: protein is rising in importance, but the rest of the plate is not improving at the same pace.

The fibre numbers are the uncomfortable part. UK adults are advised to eat 30g a day, yet British Nutrition Foundation material puts average intake at about 16g a day, leaving a shortfall of roughly 14g. Only about 4% of adults meet the recommendation. The Foundation’s 2026 report says the deficit is driven by a mix of sensory, practical, economic, behavioural and communication barriers, from taste and texture preferences to low confidence cooking with fibre-rich ingredients and concerns about digestive discomfort.

That leaves clear commercial openings, especially in bakery, breakfast cereals, convenience foods and snacks, where the British Nutrition Foundation says fibre reformulation can do real work. The report also makes an important point that should matter to product developers: the foods contributing most to fibre intake are not always the foods highest in fibre. In other words, the job is not just adding bran to a few obvious products. It is about changing what people actually buy for breakfast, lunch and between-meal eating.

The market is already moving in that direction. NielsenIQ said on February 4, 2026 that protein-based foods were up 9.6% and fibre-based foods were up 14.1% over the prior 26 weeks, well ahead of total FMCG growth. NIQ also said one in four UK households named health as their top priority for the year ahead, which helps explain why shoppers are increasingly searching nutrition cues across the shelf rather than buying into protein alone.

The stronger policy case sits with fibre. The British Nutrition Foundation says an Eatwell Guide-aligned diet could lift average life expectancy and cut new cases of type 2 diabetes over 10 years, with increased fibre intake accounting for almost 23% of the modelled health gains. That is the real imbalance in the UK diet story: protein has become the easy label claim, but fibre is still the nutrient doing the hard, unfinished work.