Fibre Ramp to 30 g/day

Add five grams of fibre a week until you reach thirty — the ramp is what prevents the bloating that ends most attempts on day three.

3 min read August 10, 2026 AgeGen Editorial
Fibre Ramp to 30 g/day — AgeGen

Adding 5 g of dietary fibre per week over four weeks is the reliable path to 30 g/day — the ramp is what separates success from the bloating that ends most attempts by day three. Going from 12 g to 30 g overnight sends undigested substrate flooding into a microbiome not yet equipped to handle it; the four-week ramp lets the gut adapt quietly.

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Thirty grams of fibre a day is unremarkable advice — the ramp is the part that decides whether you stay.

Transcript & sources → All videos

Mr. Age is AgeGen's editorial character. Facts come from the protocol above.

The protocol

  • Week 1 — Baseline. Log your fibre for 3 days without changing anything. Know where you're starting.
  • Week 2 — +5 g/day. One extra serving of beans, or swap the usual breakfast cereal for oats.
  • Week 3 — +5 g/day. Add a whole-grain swap and eat one piece of fruit with the skin on.
  • Week 4 — +5 g/day. Reach the 30 g target and hold it.
  • Duration: 4 weeks to the target, then ongoing.
  • Food first. Whole foods rather than a fibre supplement — the fibre in food arrives with the rest of the plant matrix (water, phytonutrients, fermentable substrate).
  • Water. Increase fluid alongside. Added fibre without added water is the actual cause of constipation complaints — the fibre pulls water into the gut; you need to replace what it draws.

What you get

  • Digestive regularity. Soluble fibre adds bulk and water-holding capacity; insoluble fibre speeds transit time.
  • Blood cholesterol and blood glucose support. Viscous fibres slow glucose absorption and bind bile acids, both associated with lower post-meal glucose excursions and LDL.
  • Higher satiety per calorie. Fibre-rich foods slow gastric emptying and sustain fullness longer per calorie than refined equivalents.
  • Gut microbiota substrate. The colon microbiome ferments fibre into short-chain fatty acids (acetate, propionate, butyrate) that support the gut lining and immune tone.

Contraindications

  • Inflammatory bowel disease, diverticulitis flares, or recent bowel surgery — any change to fibre goes through a clinician.
  • Known bowel stricture.
  • Severe gastroparesis.

Evidence level

High. Dietary fibre and health outcomes (cardiovascular events, type 2 diabetes, colorectal cancer, all-cause mortality) are among the most replicated associations in nutrition epidemiology. The ramp protocol itself is standard clinical dietetics, not a novel intervention.

Eyeballing portions is wrong in a consistent direction — two weeks on a gram scale recalibrated mine.

What I use for this Evidence: Moderate

Digital Kitchen Scale

A gram scale with a tare function — the difference between guessing at 30 g of fibre and knowing.

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Illustrative photo. We may earn a commission — the affiliate link and the full disclosure live on our shop page.

Sources

AgeGen never invents studies and never recommends prescription drugs by brand. Biohacks are experiments, not prescriptions — honour the contraindications and talk to a clinician if a condition above applies to you.

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