
Table of contents
- What Is Fibre And Why Do I Need It?
What Is Fibre And Why Do I Need It?

Fibre, also known as roughage, is a type of carbohydrate found in plant-based foods that the body cannot fully digest. Unlike other carbs, it passes through the digestive system mostly intact, making it crucial for maintaining overall health. But what is fibre exactly, and why do you need it? Let’s dive into its role and importance in your diet.
Types of Dietary Fibre
There are two primary types of fibre, each playing a unique role in supporting your body:
Soluble Fibre
Soluble fibre dissolves in water, forming a gel-like substance during digestion. This type of fibre can help regulate blood sugar levels and reduce cholesterol.
Common sources of soluble fibre:
- Oats
- Beans
- Apples
- Citrus fruits
- Barley

Insoluble Fibre
Insoluble fibre does not dissolve in water. Instead, it adds bulk to stool and promotes regular bowel movements, preventing constipation.
Common sources of insoluble fibre:
- Whole grains
- Nuts
- Seeds
- Potatoes (with skin)
- Leafy vegetables

4 Health Benefits of Fibre
1. Improves Digestive Health
One of the most well-known benefits of fibre is its positive impact on digestion. Insoluble fibre acts like a broom, sweeping waste through your intestines and promoting regular bowel movements. This can help prevent constipation, haemorrhoids, and diverticulitis.
On the other hand, soluble fibre nourishes beneficial gut bacteria, supporting a healthy microbiome. A thriving gut microbiome is linked to better digestion, enhanced immunity, and mental well-being.

2. Helps Regulate Blood Sugar Levels
Fibre slows the absorption of sugar, preventing spikes and crashes in blood glucose levels. Soluble fibre, in particular, forms a gel in the stomach, slowing carbohydrate breakdown and helping individuals with diabetes manage their condition more effectively.

3. Supports Heart Health
Consuming fibre-rich foods is associated with a lower risk of heart disease. Soluble fibre helps reduce levels of LDL (“bad”) cholesterol by binding to it in the intestines and removing it from the body. High-fibre diets have also been shown to lower blood pressure and inflammation—both major contributors to cardiovascular disease.

4. Aids in Weight Management
High-fibre foods are typically more filling, helping you feel satisfied for longer periods and reducing overall calorie intake. Fibre slows digestion, which can help prevent overeating and promote healthy weight loss.

How Much Fibre Do You Need Daily?
The recommended daily intake depends on several factors, including age, gender, activity level, and overall health status. Here are some general guidelines to help you understand your needs:
Profile | Daily Fibre Recommendation |
---|---|
Men (19-50 years) | 30-38 grams per day |
Women (19-50 years) | 25-30 grams per day |
Children | 19-25 grams per day |
Older Adults (50+ years) | Slightly lower requirements due to changes in metabolism and appetite – 21-30 grams per day, depending on gender |
Pregnant or Breastfeeding Women | Increased fibre needs of around 28-30 grams per day, to support digestive health and help prevent pregnancy-related constipation |
Athletes | Higher fibre intake may be needed due to increased caloric consumption, but it should be carefully balanced to prevent gastrointestinal distress during intense exercise |
Tip: For personalised recommendations based on your lifestyle and health, consult a registered dietitian or healthcare provider.
To delve deeper into the current intake guidelines, check out this research-backed study from the National Institutes of Health.
Best Sources of Fibre
Fruits and Vegetables
Eating a variety of fruits and vegetables ensures you get both soluble and insoluble fibre, along with vitamins and antioxidants.

- Berries (raspberries, blackberries)
- Apples (with skin)
- Carrots
- Broccoli
- Spinach
Whole Grains
Switching from refined grains to whole grains is a simple way to boost fibre intake.

- Oats
- Brown rice
- Whole wheat bread and pasta
- Quinoa
- Barley
Legumes
Legumes are fibre powerhouses and provide plant-based protein.

- Lentils
- Chickpeas
- Black beans
- Kidney beans
- Peas
Nuts and Seeds
Snack on nuts or sprinkle seeds over meals to increase your daily fibre intake.

- Chia seeds
- Flaxseeds
- Almonds
- Walnuts
- Sunflower seeds
Fibre Supplements: Do You Need Them?
If you are unable to meet your roughage needs through food alone, supplements can be an option. Below are some common types of roughage supplements and their benefits:
1. Psyllium Husk
- Derived from the seeds of the Plantago ovata plant, psyllium husk is a soluble fibre that forms a gel when mixed with water. It is highly effective for relieving constipation, lowering cholesterol, and improving blood sugar control.

2. Wheat Dextrin
- Wheat dextrin is a soluble fibre supplement that dissolves easily in liquids, making it easy to incorporate into your daily routine. It supports digestive health and helps regulate blood sugar levels.

3. Inulin
- Inulin is a prebiotic fibre found in foods like chicory root, onions, and garlic. It promotes the growth of beneficial gut bacteria and aids in overall gut health. Inulin supplements are often used for digestive support and improved calcium absorption.

While supplements can help, they should not replace whole foods, which provide additional nutrients like vitamins and antioxidants. Always consult a healthcare professional before starting any supplement.
Fibre and Hydration: The Crucial Connection
When increasing roughage intake, hydration is essential. Without adequate water, roughage can cause digestive discomfort, such as bloating or constipation. As roughage absorbs water to form bulkier stools and aid passage through the digestive tract, staying hydrated ensures everything flows smoothly. Insufficient hydration can lead to hardened stools, making bowel movements difficult or painful.
Tip: To support optimal digestion, balance your roughage intake with a steady water consumption of at least 8-10 glasses per day. In warmer climates or during intense physical activity, you may need even more water to compensate for increased loss through sweat.

Tips for Increasing Fibre Intake Safely
- Start Slow: Gradually increase fibre intake to avoid gastrointestinal issues.
- Eat the Whole Fruit: Instead of juice, consume whole fruits to maximise fibre content.
- Include It in Every Meal: Add vegetables to meals, sprinkle seeds over breakfast, or switch to whole grains.
- Stay Hydrated: Drink plenty of water alongside your fibre-rich meals.
Common FAQs About Fibre
Conclusion: Why Fibre Deserves a Place on Your Plate

Fibre is a key component of a healthy diet, contributing to improved digestion, better heart health, and stable blood sugar levels. With benefits spanning from weight management to disease prevention, incorporating a variety of fibre-rich foods into your meals is an investment in long-term health. If you’re looking to optimise your diet, small changes – like swapping refined grains for whole grains or snacking on fruits instead of processed treats – can go a long way.
- Your Next Read: Now that you’ve learned the basics of this wonderful carbohydrate and how to incorporate it into your lifestyle, it might be time to take your diet journey that bit further. Check out our next post, Mastering The Basics: Healthy Eating For Beginners, where we uncover how small portions, mindful choices, and bright flavours can revolutionise your well-being. Trust me, you won’t want to miss it! For more tips on healthy eating, visit www.dietsuk.co.uk.
I hope this guide has inspired you to prioritise fibre on your plate. If you have any questions or tips, feel free to share them! Your journey to better health starts with simple steps.