Jessie Inchauspé@glucosegoddessInstagram

Nutritional yeast is often used in vegan recipes because it’s a great cheese substitute, but honestly I’ve

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what it claims

Sprinkling 4 grams of nutritional yeast on starchy dishes (such as pasta) can significantly reduce a glucose spike thanks to the presence of beta-glucan fibers.

overstated

The idea of combining fiber and protein with a carbohydrate-rich meal to smooth the blood sugar curve is an excellent wellness habit.

noli's read

The idea of combining fiber and protein with a carbohydrate-rich meal to smooth the blood sugar curve is an excellent wellness habit. However, the meta-analysis of clinical trials by Zurbau et al. (2021) cited by the creator studies exclusively oat beta-glucans, not those derived from yeast. Research indicates that oat beta-glucans are soluble, viscous fibers that slow digestion by forming a gel. Conversely, nutritional yeast beta-glucans are insoluble and do not increase digestive viscosity, as highlighted in academic work by Feng (2016). Finally, a 4-gram serving of yeast provides only about 1 gram of fiber and 1.5 grams of protein, a contribution far too modest to flatten the glycemic response of a plate of pasta as dramatically as shown on the graph.

the sources

Claimed by Jessie Inchauspé. Noli grades the claim, never the person.

Decoded by Noli · July 13, 2026 · the original post

What the graded evidence says

Effect: postprandial glucose incremental AUC (0-180 min) — ~53% lower with carbohydrate-last vs carbohydrate-first (T2D crossover, n=16); vinegar and post-meal walking each give small-moderate reductions
Measured on: mainly adults with type 2 diabetes or overweight; fewer data in healthy normoglycemic adults

Most trials are small, short-term, and done in people with diabetes. For someone with healthy blood sugar, a flatter curve is nice but hasn't been tied to weight or long-term outcomes. It never replaces total food quality and quantity.

Jessie Inchauspé in the Register36 claims graded · solidity 75/100See their record →