The studies on high carb, high fibre diets for T2DM

40 years late, sue me 🙂

These small, short duration studies suggest switching people from an ADA diet to a high carb, high fibre, whole food-based diet (HCF) would be of benefit in T2DM (Kiehm et al., 1976 and Anderson and Ward, 1979) (and longer-term follow-up with similar results).

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These studies have been blogged about. Like, a lot.

The diets were approximately isocaloric (not much weight loss on either); lower protein in the first study, same protein in the second.

Study design: relatively weak — 1 week on ADA diet, followed by 2 weeks HCF.

Strengths: the second study was in a metabolic ward and controlled for protein, and the long-term follow-up was at 15 months. Weight stable for the most part.

Here’s the rub:

  1. HCF didn’t work in the most insulin resistant group. Fasting glucose actually seemed to improve a bit on ADA and then appeared to deteriorate in some individuals on HCF.

For the rest of my take on these studies and morehead over to Patreon! Join the community for up-to-date information about a variety of topics in the health & optimizing wellness space. Five bucks a month for access to this and all previous articles. It’s ad-free and you can cancel if it sucks  

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