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Why do I need fibre in my diet?

There are many reasons why you need fibre, including:
  • fibre decreases the time that waste stays in the bowel
  • It increases the bulk and weight of our stools
  • It encourages the growth of beneficial bacteria in the bowel1

All of these help to maintain a healthy bowel. To get the best out of eating fibre you need to drink water, as dehydration may cause constipation and increase the time that waste is left in the bowel.

Evidence suggests that high fibre diets and increased physical exercise are associated with a lower risk of bowel cancer (possibly because both decrease the time that waste takes to pass through the bowel).2,3

 

Replace this low fibre food... With this higher fibre food...
White bread Granary bread
White bagels Wholegrain bagels
Cornflakes Muesli or wholegrain cereals
White pasta Whole wheat or spelt pasta
White rice Brown basmati or wholegrain rice
Carton of fresh fruit juice Piece of fresh fruit
Red meat Beans or lentils
Biscuits Oatcakes
Crisps Vegetable sticks
Sweets Dried fruit
Pack of salted peanuts Unsalted mixed nuts and seeds
Chips Baked, steamed or boiled potatoes in their skin

 

Five portions of fruit AND vegetables per day should provide us with enough fibre. How to easily get five portions of fruit and vegetables per day:

  • Add a handful of grapes, strawberries or a chopped apple to your porridge or muesli in the morning
  • Have two satsumas as a morning snack
  • Add a handful of sliced pepper, cucumber and carrot to your lunchtime sandwich
  • Drink one glass of fresh fruit juice (not from concentrate) in the afternoon
  • Add two broccoli florets and half a courgette to your dinner plate

ANY vegetable counts towards your 5 A DAY(except potatoes which are classified as starches).


Footnotes:
(1) Murray M (2005) The Encyclopaedia of Healing Foods p77-78. New York, Atria Books.
(2) Bingham SA et al (2003) Dietary fibre in food and protection against colorectal cancer in the European Prospective Investigation into Cancer and Nutrition (EPIC): an observational study. The Lancet 361, 91496-1500.
(3) Friedenreich C et al (2006) Physical Activity and Risk of Colon and Rectal Cancers: The European Prospective Investigation into Cancer and Nutrition. Cancer Epidemiology, Biomarkers and Prevention 15, 2398-2407.

Last updated 17th January 2011