Structured population data were available for 4 of 4 supporting studies. 3 studies described participants with type 2 diabetes. 3 studies described adult participants.

Upstream consistency scoring indicates mixed findings across the evidence.

2 supporting studies do not have a displayable topic-matched quantitative effect.

Evidence uses heterogeneous comparison contexts: active_comparator, baseline_within_group, unknown_unresolved, usual_care.

1 supporting study has high, serious, critical, unclear, or unavailable risk-of-bias information.

Not extracted from the authoritative source.

Available source content was suppressed because validation identified a conflict.

Clinician-reference record is usable with limitations in: arms, comparator.

Authoritative quality diagnostic: invalid or missing unit.

Authoritative quality diagnostic: invalid or missing value.

Mediterranean Diet Improves Glycemic Control in Type 2 Diabetes

Control Group (CG)

Core clinician-reference fields are available or not applicable.

Pregnant women following a Mediterranean diet with increased consumption of EVOO and pistachios.

Intervention Group (IG)

In this way, nutritional intervention could be ensured for at least 3 months. The IG recommended a MedDiet guideline: insisting on increased consumption of EVOO (>40 mL/day) and pistachios (1 handful per day), with both foods provided free of charge.

Pregnant women receiving standard dietary recommendations to limit EVOO and nuts.

In contrast, women in the CG group were advised to limit their daily EVOO intake to less than 40 mL and to avoid eating nuts more than three times a week.

Mediterranean Diet Reduces Gestational Diabetes Risk

Clinician-reference record is usable with limitations in: comparator.

Participants received a personalized postprandial-targeting diet.

PPT-MED

Participants were randomized to one of the two allocations with no restrictions and started the crossover dietary intervention in a sequence according to the study arm they were randomized to ('PPT-MED' or 'MED-PPT').

Participants received a Mediterranean-style diet.

MED-PPT

Personalized diet improves glycemic control in type 2 diabetes

Mediterranean-style control diet

Participants followed a diet restricting carbohydrate intake to the first two meals of the day.

eTRC diet

Participants were randomly assigned, in a 1:1 ratio, to follow either an eTRC diet or a Mediterranean-style (Med) control diet matched in energy restriction and macronutrient composition for 12 consecutive weeks.

Participants followed a Mediterranean-style diet with matched energy restriction and macronutrient distribution.

Mediterranean diet × Fasting Plasma Glucose (FPG)

Available supporting studies

Mediterranean Diet Improves Glycemic Control in Type 2 Diabetes

Mediterranean Diet Reduces Gestational Diabetes Risk

Personalized diet improves glycemic control in type 2 diabetes

Time-restricted diet aids glucose control in diabetes