Compound or practice · Nutrition
Resistant Starch
Starch that escapes digestion to feed the colon — a potent butyrate producer with real post-meal glucose benefits.
- Overall grade
- Grade B
- Last revised
- 2
- graded outcomes
- 0
- references listed
A structured monograph in Prometheus's bundled library. Its grades are the monograph's own reading of the evidence, not a peer-reviewed review.
2 at grade B — 2 graded rows
What is known
Each outcome with its grade (how strong the evidence is, A to D), the size of the effect where the entry records one, and how often studies agree.
- Post-meal glucose / insulin sensitivityEvidence grade B
Consistent metabolic signal
Smallmixed
- Colonic butyrate / gut healthEvidence grade B
Strong prebiotic
Moderatehigh
What is uncertain
Read off the same rows as above. Nothing here is added that the entry does not itself record.
- Studies disagree: Post-meal glucose / insulin sensitivity (mixed agreement).
Interactions
Documented pairings with supplements and medicines. A medicine on this list is a conversation for whoever prescribes it.
ButyrateWorks together
Resistant starch is the natural way to raise colonic butyrate.
The evidence in words
What it is
Resistant starch is starch that resists small-intestine digestion (in green bananas, cooked-and-cooled potato/rice, legumes, or raw potato starch) and ferments in the colon.
How it works
Colonic bacteria ferment it to short-chain fatty acids — especially butyrate, the preferred fuel of colon cells — improving barrier function and insulin sensitivity.
What the evidence shows
Resistant starch reliably raises colonic butyrate and improves post-meal glucose and insulin sensitivity in controlled trials; effects on body weight and lipids are smaller and mixed. A well-supported prebiotic with clear mechanism, though gas is common while the microbiome adapts.
Safety & interactions
Safe; expect increased gas/bloating initially — build up slowly. Butyrate — Resistant starch is the natural way to raise colonic butyrate.
Bottom line
A legitimately beneficial prebiotic fiber for gut butyrate and glucose control. Cheap from food (cooled potato/rice, green banana); ramp intake gradually.
Goes with
- ButyrateResistant starch is the natural way to raise colonic butyrate.Evidence grade C
Related reading
Entries that share this one's tags or conditions.
- Resistant Starch for Colonic butyrate / gut healthEvidence grade B — Strong prebioticEvidence grade B
- Resistant Starch for Post-meal glucose / insulin sensitivityEvidence grade B — Consistent metabolic signalEvidence grade B
- Resistant Starch: side effects, safety & interactionsSafe; expect increased gas/bloating initially — build up slowly.Evidence grade B
- Larch ArabinogalactanA larch-tree prebiotic fiber with modest immune and gut signals — well tolerated, lightly evidenced.Evidence grade C
Sources
This entry lists no references of its own.
Last revised . A grade is this entry's reading of the evidence, not medical advice.