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On a low-carb diet, do you still need vegetables and fibre?

What the experts say

Dominic P. D'AgostinoPhD · physiologist and pharmacologist, University of South Florida

Yes. Keep eating fibrous and colourful vegetables, berries and nuts inside the carbohydrate budget.

What it rests onHe states it as his own considered opinion rather than as a trial result, and eats 50 to 100 g of carbohydrate a day himself with about a quarter of it as fibre. The general benefit of vegetables and fibre for adults rests on a large observational literature independent of him.

Source: tim.blog ↗
Shawn BakerMD · orthopedic surgeon and strength athlete

No. Remove all plant foods, and for IBS or chronic constipation remove dietary fibre completely rather than adding more.

What it rests onHe frames plant removal as an elimination protocol for people who react to plant compounds and to the carbohydrate load, not as an optimal-nutrition claim, and argues gut function often improves without plant fibre. His page cites no study for the fibre claim.

Source: carnivore.diet ↗

Overview

D'Agostino is talking to general adults eating low-carbohydrate for metabolic health. Baker, in the fibre claim, is talking to people with IBS or chronic constipation, and separately to anyone trying a time-limited elimination diet. They are not describing the same person.

Where they agree

Both restrict carbohydrate, both reject the idea that grains and sugar are necessary, and both accept that some individuals react badly to specific plant foods. The dispute is whether the exception generalises.

What would settle it

A controlled trial of fibre removal versus fibre addition in diagnosed IBS with follow-up beyond a few months, and long-term outcome data on adults eating zero plant foods. Neither exists in either direction.

Practice does not pick a winner here

You do, and your call is dated, kept, and yours to change. Follow the people you already trust and what they publish turns into a short daily practice.

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