Omega-3 Polyunsaturates Speed Up Gastric Flow
Meals containing omega-3 polyunsaturates reduce the time taken for the stomach to empty.
- In an Oxford study, 10 healthy women aged 50-62 years were given, as part of a mixed meal, 40g of oil that was either rich in saturates, monounsaturates, omega-6 polyunsaturated fatty acids (PUFAs) or omega-3 PUFAs.
- C13-radiolabelled octanoate (100mg) was also added, and gastric emptying was assessed by monitoring breath levels of C13.
- The omega-3 meals consistently enhanced C13 recovery from the breath, indicating increased gastric emptying rates, a delayed response to cholecytokinin and a reduced response to glucagon-like peptide 1.
- These last two observations may explain the mechanism of the omega-3 PUFA effect.
Source: Robertson MD, et al. Am J Clin Nutr 2002
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