The most underrated nutrient
Fibre rarely gets the attention protein does, yet most adults in the UK and Ireland fall well short of the recommended amount. Lesson 8 covered how fibre adds fullness for very few calories, and Lesson 16 covered how it slows glucose absorption. This lesson is about the practical part: actually hitting a daily target without overhauling every meal.
The target: 30 g a day
The NHS recommends adults aim for around 30 g of fibre a day, a figure most people in the UK and Ireland do not reach. A major systematic review published in The Lancet (Reynolds et al., 2019), already referenced in Lesson 8, linked higher fibre intake with meaningfully lower rates of heart disease, stroke, type 2 diabetes and bowel cancer. Thirty grams is not an arbitrary number, it is roughly the point where those benefits become consistently visible across the research.
Spread across a day, 30 g is very achievable
A bowl of wholegrain porridge, a portion of lentils or beans at lunch, a couple of pieces of fruit, and a generous serving of vegetables at dinner typically gets most people close to target without a single unusual meal.
One small addition per meal, not one big overhaul
Swap refined cereal for porridge oats, or add a spoon of wheat bran to whatever you already eat.
Add a scoop of beans, lentils or chickpeas to a salad or soup, or choose the wholemeal version of bread or wraps.
Add one extra portion of vegetables, and leave the skin on potatoes where the recipe allows it.
Reach for fruit, vegetable sticks, or a handful of nuts rather than a refined, low-fibre snack.
A few high-fibre recipes already in the cookbook
Increase it gradually, with water
Jumping straight from a low-fibre diet to 30 g a day can cause bloating or discomfort. Add fibre gradually over a couple of weeks, and increase water intake alongside it, fibre needs water to do its job properly in the gut.
Today’s task
Pick one meal today and add a single fibre source to it, oats, beans, an extra portion of vegetables, or a piece of fruit alongside it.
Check in with yourself
- Roughly how close do you think your usual day gets to 30 g of fibre?
- Which meal in your day currently has the least fibre in it?
- Any new takeaway from today’s lesson you want to remember?