Regarding the effects of EPA and DHA on glycaemic control, the **data** from this review are limited and inconclusive. In diabetic patients, both omega-3 PUFAs resulted in increased fasting glucose, i.e., mild glycaemic impairment, whilst in dyslipidaemic men, increased fasting insulin was observed [57,64]. The mechanisms for this are unknown, but the effects observed in diabetic patients may be due to increased hepatic glucose output and/or decreased insulin secretion, although the former is more likely, as there was no evidence of a change in insulin sensitivity or secretion [64].