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Acute Insulin Secretory Effects of a Classic Ketogenic Meal in Healthy Subjects: A Randomized Cross-Over Study.
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- Author(s): Battezzati, Alberto; Foppiani, Andrea; Leone, Alessandro; De Amicis, Ramona; Spadafranca, Angela; Mari, Andrea; Bertoli, Simona
- Source:
Nutrients; Mar2023, Vol. 15 Issue 5, p1119, 10p - Source:
- Additional Information
- Abstract: The classic ketogenic diet (KD) is a high-fat, low-carbohydrate diet that mimics a starvation state with sufficient caloric intake to sustain growth and development. KD is an established treatment for several diseases, and it is currently evaluated in the management of insulin-resistant states, although insulin secretion after a classic ketogenic meal has never been investigated. We measured the insulin secretion to a ketogenic meal in 12 healthy subjects (50% females, age range 19–31 years, BMI range 19.7–24.7 kg/m2) after cross-over administrations of a Mediterranean meal and a ketogenic meal both satisfying ~40% of an individual's total energy requirement, in random order and separated by a 7-day washout period. Venous blood was sampled at baseline and at 10, 20, 30, 45, 60, 90, 120, and 180 min to measure glucose, insulin, and C-peptide concentrations. Insulin secretion was calculated from C-peptide deconvolution and normalized to the estimated body surface area. Glucose, insulin concentrations, and insulin secretory rate were markedly reduced after the ketogenic meal with respect to the Mediterranean meal: glucose AUC in the first OGTT hour −643 mg × dL−1 × min−1, 95% CI −1134, −152, p = 0.015; total insulin concentration −44,943 pmol/L, 95% CI −59,181, −3706, p < 0.001; peak rate of insulin secretion −535 pmol × min−1 × m−2, 95% CI −763, −308, p < 0.001. We have shown that a ketogenic meal is disposed of with only a minimal insulin secretory response compared to a Mediterranean meal. This finding may be of interest to patients with insulin resistance and or insulin secretory defects. [ABSTRACT FROM AUTHOR]
- Abstract: Copyright of Nutrients is the property of MDPI and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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