The average daily intake, measured year after year in the national diet survey.
The Roundway Journal · Gut · 5 min read
Only 4 in 100 UK adults eat enough fibre.
Bloated after lunch, sluggish by three, digestion with a mind of its own. The recommendation is thirty grams a day. The average adult manages 16.4. Here is what those four dots look like.
Each dot is one UK adult. The four dark ones hit 30g of fibre a day.
16.4g
30g
The daily amount the recommendation is set at. Almost nobody is close.
Fibre is not really for you.
Step one
It arrives undigested
You cannot break fibre down. It passes through the stomach untouched and reaches the large intestine intact, which is the entire point of it.
Step two
The bacteria eat
A hundred trillion microorganisms live down there. Fibre is their food, and they ferment it into compounds that support the gut lining.
Step three
You feel the result
A fed gut behaves. Digestion gets more predictable. Starve it and it does not complain loudly, it just quietly dwindles.
“You are outnumbered inside your own body. Feed the majority.”
Why we keep writing about fibre
Where the gap comes from
More than half the calories in the average UK diet now come from ultra-processed food, and processing is where fibre goes to die. Most people’s normal week is already majority ultra-processed, with no decision ever made.
Food first, always: beans, oats, vegetables, wholegrains. But the survey data is honest about how rarely that happens, which is why a daily baseline matters. A probiotic arriving on an empty stomach of fibre is seeds on concrete. The fibres have to arrive with the bacteria.
What you can do today, before any pack
Free, boring, and more powerful than any capsule.
1
Start the day with oats or beans on toast. Breakfast is the easiest place to find eight grams without thinking.
2
Swap white for wholemeal. Same sandwich, roughly double the fibre. Nobody notices by Thursday.
3
Add one more vegetable at dinner. Not a new diet, one more spoonful on the plate you already make.
4
Keep the skins on. Potatoes, apples, carrots. A large part of the fibre is in the part most kitchens throw away.
Thirty grams is not a wellness trend. It is the difference between a gut that copes and one that complains, and it buys you more good years at the table with the people you like.
The one we built for this
Ten strains, and the fibre to feed them.
Most probiotics send bacteria in with no food. Core Biotic puts three prebiotic fibres in the same capsule as ten named strains, 60 billion CFU, one a day.
See Core Biotic60 billion CFU · 10 named strains · Made in the UK
