Oats, berries, seeds and legumes that provide dietary fibre

Nutrition guide

The 25g Fibre Rule: Are You Hitting Your Daily Fibre Intake?

Key takeaways: WHO guidance suggests at least 25g of naturally occurring fibre daily for people older than 10. Increase fibre gradually and drink enough fluid for your individual needs.

Daily fibre intake is easier to improve when you build meals around whole or minimally processed plant foods. The WHO healthy-diet fact sheet identifies at least 25g of naturally occurring dietary fibre per day as a useful population-level target for people older than 10.

Where fibre comes from

Oats, whole grains, lentils, chickpeas, beans, vegetables, fruit, nuts and seeds all contribute. A breakfast of oats with berries and chia, a lentil bowl at lunch, and vegetables with dinner can build fibre across the day without relying on a single “superfood.”

Increase slowly

If your current intake is low, increase portions gradually. A sudden large increase may cause bloating or discomfort. Drink fluids according to your needs, and ask a clinician for individualized guidance if you have a digestive condition, kidney disease or fluid restriction.

Fibre is one part of a balanced diet, not a reason to ignore protein, energy needs or food enjoyment. The Harvard healthy-diet principles also emphasize variety, plant foods and minimally processed choices.

Sources: WHO Healthy diet; Harvard Health.

Try overnight oats