The Mediterranean diet improves glycemic control and cardiovascular risk in T1D youth while promoting butyrate-producing taxa depleted in T1D, particularly F. prausnitzii. Combination with L. johnsonii N6.2 supplementation has been proposed.
Mechanism#
High fiber content provides substrate for saccharolytic fermentation and SCFA production. Butyrate strengthens tight junctions and reduces intestinal permeability (a driver of beta-cell autoimmunity). Promotes Treg differentiation via HDAC inhibition, dampening autoimmune processes.
Polyphenols (olive oil, nuts) have additional anti-inflammatory and prebiotic effects.
Clinical Evidence#
The SEARCH study demonstrated that Mediterranean diet adherence in T1D youth was associated with improved HbA1c and reduced cardiovascular risk markers. Proposed combination with L. johnsonii N6.2 supplementation targets the specific taxa depleted in T1D.
Clinical Considerations#
Carbohydrate counting remains essential for insulin dosing in T1D. Mediterranean diet provides complex carbohydrates with lower glycemic index, easing postprandial management. Nutritional counseling should integrate Mediterranean principles with T1D-specific meal planning.
Cross-References#
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