Nourishing your body with the right amount of fiber is essential for good health, but it must be a gradual process. Nutrition experts suggest going slowly and drinking water to help your body adapt.
Fiber has long been an overlooked nutrient, but it plays a crucial role in maintaining health. Social media is buzzing with discussions about ‘fibermaxxing’ — the practice of increasing dietary fiber. On platforms like TikTok, you’ll find numerous videos advising on ways to boost meal fiber and explaining its significance in enhancing health from digestion to potentially extending lifespan.
Hannah Holscher, a nutrition professor at the University of Illinois Urbana-Champaign, welcomes the spotlight on fiber. She explains that fiber is not typically thought of as an exciting nutrient, yet many people are deficient.
Why You Need More Fiber
Recommendations suggest consuming 14 grams of fiber per 1,000 calories, equating to approximately 25 to 38 grams daily depending on gender. However, only about 10% of Americans meet these targets, with the average adult consuming about 10 to 15 grams per day.
Increasing fiber intake can offer multiple health benefits such as reduced risks of obesity, cardiovascular disease, and type 2 diabetes, along with lowering the risk of certain cancers like colorectal cancer. Fiber also nourishes gut microbes, critical for various health aspects including immune system and mood.
Choosing Fiber-Rich Foods
The best sources of fiber are plant-based foods. Whole grains, kale, nuts, and seeds provide insoluble fiber aiding digestion, while oats, beans, lentils, mushrooms, chia seeds, and apples offer soluble fiber which manages cholesterol and blood sugar.
Registered dietician Yasi Ansari from Los Angeles encourages getting fiber primarily from whole foods as they offer additional nutrients like antioxidants that protect health.
Diversity in Fiber Sources
Instead of relying on a single fiber source, a varied diet is beneficial. Different gut microbes digest various fibers, so consuming a spectrum of plant-based foods helps maintain a healthy microbiome. A study supports this, showing those consuming over 30 plant-based fiber sources weekly had a healthier range of gut microbes producing health-boosting chemical messengers.
Holscher suggests aiming for five different fiber sources daily, achievable by checking your kitchen fruit bowl for apples, oranges, or bananas, the fridge for carrots or berries, or making oats with toppings like nuts.
“Adding a variety of fibers to meals such as apples and walnuts to oatmeal or stirring cherries with seeds in yogurt enriches dietary diversity,” Candace Pumper from Ohio State University notes.
Proceed Slowly
Pumper advises being cautious if you have conditions like IBS or Crohn’s disease, as certain fibers can exacerbate symptoms. Generally, increase fiber intake slowly and drink water to aid digestion, preventing gas or bloating.
Considering ‘couch to 5k’ methods, Holscher suggests incrementing fiber intake gradually, giving your digestive system time to adapt.
Finding Balance
While some influencers propose consuming high fiber levels, often 80+ grams daily, it’s crucial not to leap to extremes leading to adverse effects. Balanced, gradual changes are optimal for health, ensuring you meet daily fiber needs sustainably across your lifetime.

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