At the tender age of 17, I stumbled upon a cohort of online personalities who championed veganism as the elixir of life. They attributed their radiant complexions, cascading hair, and seemingly inexhaustible energy to this dietary shift. Many of them subscribed to a regimen dubbed “raw to four,” which dictated the consumption of uncooked foods until their evening meal. Their “what I eat in a day” vlogs often showcased elaborate concoctions: a breakfast smoothie brimming with six bananas and an entire bag of spinach, followed by a lunch of nothing but mangoes and berries.
This discovery coincided with my growing awareness of the ethical quandaries surrounding factory farming and the significant environmental toll of animal product consumption. Embracing veganism felt like a natural, almost inevitable, progression. My understanding of nutrition was rudimentary, largely confined to the mantra of “five a day.” A raw vegan diet, in my youthful estimation, seemed the pinnacle of healthy eating. With limited vegan alternatives readily available at the time, my meals consisted predominantly of copious amounts of fruits, vegetables, legumes, nuts, and seeds.
Initially, the results were remarkable. My digestion improved dramatically, my skin glowed, and I felt an unprecedented surge of energy. However, after about six months of this stringent regimen, I began to experience persistent bloating and an inconveniently frequent need to visit the restroom. I persevered, driven by my conviction in the ethical underpinnings of my diet. Yet, two years into my vegan journey, the bloating escalated into severe discomfort, accompanied by stomach cramps after nearly every meal. This debilitating condition began to erode my quality of life, impacting my sleep, work, and overall happiness. Furthermore, I developed a heightened sensitivity to alcohol and caffeine, finding myself incapacitated for days with vomiting after a mere can of cola or a couple of glasses of wine.
My general practitioner initiated a food diary and conducted allergy and intolerance tests, all of which yielded negative results. Eventually, I received a diagnosis of Irritable Bowel Syndrome (IBS), with the assurance that options were limited and that IBS was a common affliction. Despite the diagnosis, my symptoms persisted, prompting concern from my GP. I underwent a battery of scans, including an MRI, CT scan, and ultrasound, as well as a deeply invasive endoscopy. These investigations proved fruitless. My referral to a specialist NHS dietitian, approximately three years into my vegan lifestyle, marked a turning point. A single glance at my food diary led her to declare, “You’re eating way too much fibre.” She revealed that my daily fibre intake was exceeding 100 grams, more than triple the NHS recommendation of 30 grams. Her astonishment mirrored my own exasperation; I had never conceived of consuming an excessive amount of fibre.
The dietitian advised a drastic reduction in my fibre intake to 15 grams per day, suspecting I had developed a sensitivity. She also recommended reintroducing eggs and fish into my diet. This was a difficult pill to swallow for someone so passionately committed to the ethics of veganism. However, the profound impact of my health issues on my well-being left me with little choice.
The Fibre Paradox: From Trend to Trouble
Fibre, often referred to as the fourth macronutrient alongside carbohydrates, fats, and proteins, is currently experiencing a surge in popularity. The latest nutrition trend to go viral is “fibremaxxing,” a practice that, as the name suggests, advocates for a significant increase in dietary fibre. For many in the UK who fall short of adequate fibre consumption, this trend offers a potential solution. Boosting fibre intake can indeed yield numerous health benefits, including improved gut health, better appetite management, and more stable blood sugar levels. It also plays a crucial role in the prevention of chronic diseases such as cardiovascular disease and certain types of cancer.
While most individuals could stand to benefit from a gradual increase in their fibre intake, the term “fibremaxxing” triggered immediate alarm bells for me, given my personal experience.
Sophie Medlin, a registered dietitian at CityDietitians, explains that my body’s adverse reaction is entirely plausible. “When we make a major dietary change, it’s effectively altering an ecosystem within our body – the ecosystem of our gut microbiome,” she elaborates. “Too much fibre can overwhelm the microbial fermentation capacity.” In simpler terms, the bacteria in our gut responsible for breaking down fibre can become overloaded, leading to uncomfortable side effects like gas and bloating. “With all the fibre-maxxing happening on social media, this is something we should be mindful of. Drastically increasing fibre intake too quickly can be very uncomfortable and can have a lasting positive or negative impact on the gut microbiome.”
The repercussions of excessive fibre consumption can be particularly pronounced for individuals already grappling with digestive issues. “A significant factor in IBS is the presence of an excess of rapidly fermenting bacteria in the gut,” Medlin notes, explaining that this contributes to common IBS symptoms. “Fibremaxxing potentially exacerbates these bacterial populations even further.”
A Slow Road to Recovery
Within weeks of adjusting my diet, I was astonished by the rapid improvement in my symptoms. The agonizing bloating subsided, and I could finally enjoy meals without the dreaded stomach cramps. However, it took years before I could reintroduce high-fibre foods without triggering IBS symptoms. I consciously avoided beans, legumes, and meals rich in fruits and vegetables for an extended period. During this time, I also had to largely forgo caffeine and alcohol, unless I was prepared to endure days of stomach cramps.
Now, a decade later, my gut feels fully restored. I can comfortably consume fibrous foods, generally adhering to the recommended daily intake of 30 grams while maintaining a balanced intake of other macronutrients like protein and fat. Thankfully, my daily coffee and a weekend glass of wine no longer disrupt my digestion. My diet has evolved from pescatarian to occasionally including meat. It has been a long and arduous journey, and I never would have imagined that my initial embrace of veganism, fueled by a desire to consume more bananas, chickpeas, and broccoli, could have led to such significant health challenges.
The Art of Gradual Fibre Increase
Increasing your fibre intake is by no means inherently detrimental. In fact, a gradual increase offers a wealth of health advantages. “It supports our gastrointestinal health, aids in regular bowel movements, nourishes our gut microbiome, and there is substantial scientific evidence demonstrating its role in preventing cardiovascular disease, diabetes, and other long-term health conditions,” states Medlin.
The key to a healthy increase in fibre consumption lies in a slow and steady approach, aiming for an additional 8 grams per day within recommended guidelines. “For every additional 8 grams of fibre we consume, we observe a reduction in risks such as cardiovascular disease, certain cancers, and diabetes,” she explains.
“It’s crucial to do this gradually,” Medlin advises. “This might involve adding an extra portion of fruits or vegetables to your daily intake, whether as a snack or as part of your evening meal.”
She also emphasizes the importance of increasing water intake concurrently with fibre. “The analogy is that if you consume too much fibre without adequate water, it’s akin to flushing excessive toilet paper down the drain without sufficient water to clear it – it can lead to blockages, and a similar process can occur in the body,” Medlin explains.
Medlin recommends maintaining this incremental increase of eight grams for one to two weeks, carefully monitoring your body’s response before further increasing your fibre intake.
Therefore, there’s no need to embark on an extreme “fibremaxxing” regimen indefinitely; my own experience serves as a testament to this.
