http://www.patient.co.uk/doctor/Glucose ... -Tests.htmConducting the oral glucose tolerance test[18]
•Test preceded by ≥3 days of normal, unrestricted diet (>150 g carbohydrate daily) with normal physical activity.
•Carbohydrate-rich meal (30-50 g) on night before test.
•Overnight fast of 8-14 hours; drink only water.
http://www.thelancet.com/journals/lance ... 40-6736(05)60563-6/fulltextTakashi Kaneko and colleagues (July 25, p 289)1 discuss the importance of carbohydrate intake before an oral glucose-tolerance tests (OGTT). They conclude that the impaired glucose tolerance after a low-carbohydrate meal is due to the proportionally less insulin release in response to glycaemic stimulus, and that the decrease in insulin secretion is associated with the Randle effect.2 The insulinogenic index was significantly decreased after the low-carbohydrate intake, but no significant difference in the insulin concentrations before and 30 min after OGTT was found between patients on the low-carbohydrate intake and high-carbohydrate intake. Therefore, we think that the impaired glucose tolerance after the low-carbohydrate intake reflects insulin resistance rather than decreased insulin secretion, since free fatty acids inhibit use of insulin-stimulated glucose in muscle via the Randle effect
brett said:Glad you've got a proper diagnosis, and hope it takes some of the worry away.
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