Pfeifer · Neurology 2005 · case series · n=20

Low-glycemic-index treatment: a liberalized ketogenic diet for treatment of intractable epilepsy.

Cited 345 times in the scientific literature.

Level 4 - case-series / case-control

Uncontrolled clinical case series

PubMed 16344529 · doi:10.1212/01.wnl.0000187071.24292.9e · record verified 2026-08-30

What was done

Twenty patients with intractable epilepsy were treated with a low-glycemic-index regimen that allowed a more liberal total carbohydrate intake restricted to foods with a glycemic index below 50.

What was found

Ten of 20 patients experienced a greater than 90% reduction in seizure frequency.

Why it matters

This study suggests a less restrictive low-glycemic diet could serve as a viable alternative to the classic ketogenic diet for patients with drug-resistant epilepsy.

Limits

The study is a very small (n = 20), uncontrolled case series without a control group or randomization. The abstract provides no data on patient demographics, follow-up duration, adverse effects, or outcomes for the remaining 10 patients.

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