Why Fibre Is the Nutrient You're Still Ignoring
Everyone's talking about protein. Nobody's talking about fibre. This lack of focus is quietly undermining the health of a lot of people - their gut, their hormones, their weight.
Here's what the science actually says.
BRITAIN HAS A FIBRE PROBLEM
The average Brit eats just 16g of fibre a day. Only 4% of adults hit the recommended daily amount (1). The NHS target is 30g - a figure the government raised in 2015 to reflect the weight of evidence, but without any public health campaign to back it up (1).
The result: very few people in each age group in the UK are getting sufficient fibre (2), and only 1 in 3 people know that 30g is the target (2). According to the Global Burden of Disease report, more than 600,000 deaths annually are directly linked to low fibre intake (2).
That's not a minor nutritional footnote. It's a public health crisis hiding in plain sight.
WHAT FIBRE ACTUALLY DOES
Most people think fibre is about digestion. There is much more to it than that.
When fibre reaches your large intestine, bacteria ferment it and produce short-chain fatty acids (SCFAs) - compounds that regulate inflammation, strengthen the gut lining, support immune function, and signal satiety hormones. Impaired SCFA production has been linked to multiple diseases (4). A high-fibre diet is associated with a reduced risk of cardiovascular disease, type 2 diabetes, and bowel cancer (3).
But the most important thing fibre does is feed your gut microbiome - and your microbiome governs far more than digestion.
An imbalance in the gut microbiome - known as dysbiosis - has been linked to inflammatory bowel disease, obesity, type 2 diabetes, and certain neurological disorders (5). The high-fat, low fibre Western diet has been linked to profound dysbiosis, deterioration of key microbes, and adverse inflammation-related health outcomes (6).
A major 2025 study analysing gut microbiome samples from over 12,000 people across 45 countries found that people with high levels of beneficial bacteria were significantly more likely to have low levels of harmful bacteria such as E. coli - and that these protective bacteria thrive on fibre-derived SCFAs (7).
More fibre means more of the bacteria that protect you and less of the bacteria that don't.
WHY MOST HIGH-PROTEIN PRODUCTS MAKE THIS WORSE
Processing strips a lot of the fibre out. Isolates, concentrates, flavoured powders - most of what's on the market is fibre-dead. You hit your protein target and leave your gut lacking.
Research shows that high-protein diets can negatively impact the gut microbiome, specifically reducing bacteria that produce short-chain fatty acids (8). So the more protein-focused your diet, the more important adequate fibre becomes. Most protein products pull in the opposite direction.
That's the trade-off most brands don't mention, because most brands aren't built around whole-food ingredients.
We are.
WHOLEFOOD INGREDIENTS - AND WHY THAT CHANGES EVERYTHING
EXALT smoothies are built from real, whole-food ingredients - fruit, vegetables, seeds, nuts - not refined extracts or isolates. Whole-food ingredients come with their fibre. You're getting the whole thing, not protein that's been stripped away from everything that made the source food nutritionally complete.
Cold-pressing and the high pressure processing (HPP) treatment mean we never apply heat to our ingredients - so the fibre structure, the micronutrients, and the live cultures stay in the bottle exactly as nature produced them. Nothing cooked off. Nothing stripped out.
That's why BIOVIT - the premium micronutrient and fibre complex we have added across the full EXALT protein smoothie range - builds on an already strong foundation rather than compensating for a poor one. Together, the whole-food base and BIOVIT make every EXALT smoothie genuinely nutritionally complete.
WHO NEEDS TO PAY ATTENTION MOST
If You're on a GLP-1 Medication or on a Weight Loss Journey
GLP-1 drugs like Wegovy and Mounjaro dramatically reduce appetite - which means fibre intake, already low for most people, drops even further. Low fibre on a GLP-1 plan is a fast route to constipation, gut dysbiosis, and nutrient depletion. More broadly, fibre is one of the most effective weight management tools available - slowing digestion, moderating blood sugar, and keeping you fuller for longer.
The EXALT GLP-1 Nutrition Support Plan was developed for exactly this challenge. Formulated with clinical advisors including Registered Nutritionist and Dietitian Isabelle Fry and Consultant Bariatric Surgeon Mr Simon Monkhouse, it's structured nutrition for reduced appetite - with the BIOVIT-enriched smoothies at its core.
If You're Perimenopausal or Menopausal
The link between fibre and hormones is one of the most underappreciated connections in women's health.
Hormonal changes during perimenopause alter gut microbiome composition, and microbial diversity tends to decrease during and after the transition - meaning fewer bacteria that support oestrogen recycling and regulate inflammation and metabolism (9). Fibre can bind to excess oestrogen and help eliminate it via the bowel, which is particularly relevant during perimenopause when oestrogen levels tend to run higher than progesterone (10).
Research suggests that gut microbiome changes during menopause may increase fat gain, lower metabolism, and increase insulin resistance - and fibre plays a direct role in oestrogen metabolism and energy regulation (11).
Bloating, weight gain, energy crashes - many of the symptoms associated with menopause have a gut component. Fibre is one of the most direct levers available to address it.
THE BOTTOM LINE
The UK fibre gap is real, significant, and almost no one in the protein space is doing anything about it.
EXALT is built differently - whole-food ingredients that keep fibre intact, cold-pressed and HPP-treated so nothing is lost, and BIOVIT across the full range so every bottle is genuinely nutritionally complete.
Whether you're managing weight, navigating menopause, or supporting your body through a GLP-1 plan - fibre isn't optional. It's fundamental.
Explore the GLP-1 Nutrition Support Plan
REFERENCES
(1) Food & Drink Federation. "New research shows millions of Brits are missing out on health benefits of fibre." FDF Press Release, July 2025. https://www.fdf.org.uk/fdf/news-media/press-releases/2025/new-research-shows-millions-of-brits-are-missing-out-on-health-benefits-of-fibre/
(2) Food Manufacture. "Solving the big UK fibre gap." February 2024. https://www.foodmanufacture.co.uk/Article/2024/02/20/solving-the-big-uk-fibre-gap/ | Global Burden of Disease Study, cited therein.
(3) British Dietetic Association. "Fibre Food Fact Sheet." BDA, 2021 (under review 2024). https://www.bda.uk.com/resource/fibre.html
(4) Baxter NT et al. "Ecological dynamics of the gut microbiome in response to dietary fiber." bioRxiv, 2021. https://www.biorxiv.org/content/10.1101/2021.08.20.457175
(5) Sun J, Chang EB. "Gut microbiota modulation by dietary fiber on human health: Processes and mechanisms." Frontiers in Nutrition, 2023. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9996197/
(6) Dahl WJ et al. "A diverse set of solubilised natural fibers drives structure-dependent metabolism and modulation of the human gut microbiota." PMC, 2025. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12077125/
(7) NBC News / Nature Microbiology. "How eating more fiber can protect the gut microbiome." January 2025. https://www.nbcnews.com/health/health-news/fiber-diet-protect-gut-microbiome-bacteria-research-rcna187890
(8) ZOE Science & Nutrition. "Dietary Fiber and Sports Performance: Do You Need More?" September 2025. https://zoe.com/learn/sports-nutrition-fiber-sports-performance
(9) MitoQ. "The link between fiber and estrogen regulation in perimenopause." 2025. https://www.mitoq.com/blogs/journal/the-link-between-fiber-and-estrogen-regulation-in-perimenopause | Research published in npj Women's Health, cited therein.
(10) Menopause Natural Solutions. "The Importance of Dietary Fibre during Menopause." https://www.menopausenaturalsolutions.com/blog/dietary-fibre
(11) Feisty Menopause. "Another Reason to Eat More Carbs: Fiber." August 2025. https://www.feistymenopause.com/blog/another-reason-to-eat-more-carbs-fiber
