Prevention of cardiometabolic diseases through dietary modifications

Cardiometabolic diseases (CMDs) increasingly contribute to the cumulative burden of morbidity and mortality worldwide. Here, we reviewed intervention studies using a randomized controlled trial (RCT) design as well as meta-analyses of RCTs aimed at testing the effectiveness of different dietary approaches for CMD prevention.

Recent studies testing dietary approaches for CMD prevention were summarized narratively, with a focus on interventions based on caloric restriction and fasting, healthy dietary patterns and food-based dietary modifications. Evidence supports intermittent fasting, Mediterranean, Nordic, DASH, low-carbohydrate/ketogenic and plant-based diets as effective strategies for improving cardiometabolic health. However, the benefits observed with some of these dietary patterns are linked to energy restriction, and the independent effects beyond weight loss remain unclear. The effectiveness of some strategies may also depend on the overall dietary quality and adherence to the programme.

Recent findings highlight the importance of focusing on overall dietary patterns, rather than isolated nutrients, for preventing CMD. Future research should prioritize long-term intervention studies to assess the sustained effects of these dietary patterns on CMD outcomes.