A recent study has found that low-carb and low-fat diets can be heart-healthy and reduce the risk of heart disease, but only when they are rich in nutrient-dense plant-based foods. Diets based on refined carbohydrates, animal fats, and animal proteins may actually increase the risk of heart disease. The quality of the macronutrients in the diet, rather than the quantity, is what plays a crucial role in protecting heart health.

The study followed over 40,000 men and over 150,000 women for coronary heart disease incidence. The results showed that diets emphasizing quality carbohydrates, plant-based proteins, and plant-based fats were associated with a 15% lower risk of heart disease. The study concludes that prioritizing nutrient-density in diets is more important than strict macronutrient restriction for maintaining heart health and preventing heart disease. Promoting an overall healthy eating pattern that includes a variety of plant-based foods is key for primary prevention of heart disease, according to the researchers.