# Fibermaxxing: Is Eating 30 to 50 g of Fiber a Day Worth It?

For most people in the DACH region, fibermaxxing just means finally hitting the DGE reference value of at least 30 g of fiber a day. Average intake sits at only about 18 g for women and 19 g for men, so most of us are short. A 2019 Lancet meta-analysis of 185 prospective studies links high fiber intake to a 15 to 30 percent lower risk of all-cause and cardiovascular death, with the biggest benefit landing around 25 to 29 g a day. Keep in mind those mortality numbers are observational, not proof of cause, and pushing far past 50 g a day adds little documented benefit.

The viral trend actually rests on real trial evidence, not hype. And for most people in the DACH region it just means finally hitting the official 30 g a day you are probably missing.

## On this page

- What Is Fibermaxxing, and Is 30 to 50 g of Fiber a Day Actually Worth It?
- Soluble, Insoluble, Resistant Starch: Which Type of Fiber Does What?
- How Does Fiber Actually Work in the Body? The Gut, Butyrate and Satiety
- What Does Fiber Do for Cholesterol, Blood Sugar, Blood Pressure and Cancer Risk?
- How Do You Get to 30 to 50 g of Fiber Without Bloating and Gas?
- Whole Foods or Fiber Supplements: Should You Take Psyllium or Just Eat More?

## FAQ

- How much fiber should I eat per day to actually get the longevity benefit?
- Is fibermaxxing safe, or can you eat too much fiber?
- What is the fastest way to add fiber without getting bloated and gassy?
- Does psyllium (Flohsamenschalen) really lower cholesterol and blood sugar?
- Are fiber supplements as good as eating high-fiber whole foods?
- What are the highest-fiber foods available in Germany (DACH)?
- Can I do fibermaxxing if I have IBS or a sensitive stomach?

## Sources

- Reynolds A, Mann J, Cummings J, Winter N, Mete E, Te Morenga L. (2019). Carbohydrate quality and human health: a series of systematic reviews and meta-analyses. The Lancet. https://doi.org/10.1016/S0140-6736(18)31809-9
- Deutsche Gesellschaft für Ernährung (DGE), in cooperation with ÖGE (Austria) and SGE (Switzerland). (2021). Überarbeitete Referenzwerte für Ballaststoffe (D-A-CH Reference Values revision). DGE / D-A-CH Referenzwerte für die Nährstoffzufuhr
- Jovanovski E, Yashpal S, Komishon A, Zurbau A, Blanco Mejia S, Ho HVT, Li D, Sievenpiper J, Duvnjak L, Vuksan V. (2018). Effect of psyllium (Plantago ovata) fiber on LDL cholesterol and alternative lipid targets, non-HDL cholesterol and apolipoprotein B: a systematic review and meta-analysis of randomized controlled trials. The American Journal of Clinical Nutrition. https://doi.org/10.1093/ajcn/nqy115
- Gholami Z, Clark CCT, Paknahad Z. (2024). The effect of psyllium on fasting blood sugar, HbA1c, HOMA-IR, and insulin control: a GRADE-assessed systematic review and meta-analysis of randomized controlled trials. BMC Endocrine Disorders. https://doi.org/10.1186/s12902-024-01608-2
- Khan K, Jovanovski E, Ho HVT, Marques ACR, Zurbau A, Blanco Mejia S, Sievenpiper J, Vuksan V. (2018). The effect of viscous soluble fiber on blood pressure: A systematic review and meta-analysis of randomized controlled trials. Nutrition, Metabolism and Cardiovascular Diseases. https://doi.org/10.1016/j.numecd.2017.09.007
- Koh A, De Vadder F, Kovatcheva-Datchary P, Bäckhed F. (2016). From Dietary Fiber to Host Physiology: Short-Chain Fatty Acids as Key Bacterial Metabolites. Cell. https://doi.org/10.1016/j.cell.2016.05.041
- Jovanovski E, Khayyat R, Zurbau A, et al.. (2019). Should Viscous Fiber Supplements Be Considered in Diabetes Control? Results From a Systematic Review and Meta-analysis of Randomized Controlled Trials. Diabetes Care. https://doi.org/10.2337/dc18-1126
- Yao B, Fang H, Xu W, et al.. (2014). Dietary fiber intake and risk of type 2 diabetes: a dose-response analysis of prospective studies. European Journal of Epidemiology. https://doi.org/10.1007/s10654-013-9876-x
- Aune D, Chan DSM, Lau R, et al.. (2011). Dietary fibre, whole grains, and risk of colorectal cancer: systematic review and dose-response meta-analysis of prospective studies. BMJ. https://doi.org/10.1136/bmj.d6617
- Ghavami A, Banpouri S, Ziaei R, et al.. (2023). Effect of soluble fiber on blood pressure in adults: a systematic review and dose-response meta-analysis of randomized controlled trials. Nutrition Journal. https://doi.org/10.1186/s12937-023-00879-0
- Mukhopadhya I, Louis P. (2025). Gut microbiota-derived short-chain fatty acids and their role in human health and disease. Nature Reviews Microbiology. https://doi.org/10.1038/s41579-025-01183-w
- El-Salhy M, Ystad SO, Mazzawi T, Gundersen D. (2017). Dietary fiber in irritable bowel syndrome (Review). International Journal of Molecular Medicine. https://doi.org/10.3892/ijmm.2017.3072
- Pugh JE, Cai M, Altieri N, Frost G. (2023). A comparison of the effects of resistant starch types on glycemic response in individuals with type 2 diabetes or prediabetes: a systematic review and meta-analysis. Frontiers in Nutrition. https://doi.org/10.3389/fnut.2023.1118229
- Facchin S, Bertin L, Bonazzi E, Lorenzon G, De Barba C, Barberio B, Zingone F, Maniero D, Scarpa M, Ruffolo C, Angriman I, Savarino EV. (2024). Short-Chain Fatty Acids and Human Health: From Metabolic Pathways to Current Therapeutic Implications. Life (Basel). https://doi.org/10.3390/life14050559
- Nanayakkara WS, Skidmore PML, O'Brien L, Wilkinson TJ, Gearry RB. (2016). Efficacy of the low FODMAP diet for treating irritable bowel syndrome: the evidence to date. Clinical and Experimental Gastroenterology. https://doi.org/10.2147/CEG.S86798

_Full guide: https://longevity-switzerland.com/en/guide/ballaststoffe-fibermaxxing_

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_Canonical: https://longevity-switzerland.com/en/guide/ballaststoffe-fibermaxxing · Part of Longevity Cities · Updated 2026-06-02_