So is the clinical effectiveness of the KD simply a matter of increasing energy stores? If this is the case, then would it not be a simpler matter to ingest creatine, a highly bioavailable and relatively safe oral supplement, and one that is increasingly demonstrated to promote health and longevity (Beal, 2003; Bender et al., 2007; Schapira, 2008)?
Given these findings, it is not surprising that investigators have studied the effects of dietary supplementation with PUFAs alone, to determine whether these substrates can render an anticonvulsant effect. Early case reports suggested that seizures might be better controlled with this approach (Schlanger et al., 2002). However, a recent randomized trial in adult patients with epilepsy failed to demonstrate superiority of a PUFA supplement (EPA) plus DHA, 2.2 mg/day in a 3:2 ratio) over placebo (Bromfield et al., 2008). Thus, the jury is still out as to whether PUFAs alone can mirror the clinical effects of the KD.

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