Replacing regular snacks with pecans may improve cholesterol and diet quality

This is especially important for people at high risk of cardiovascular disease and other metabolic disorders.

The experiment involved 138 adults at high risk of cardiovascular disease. They were divided into two groups: one group replaced their usual snacks with pecans for 12 weeks, while the other group followed their usual diet.

The results of the study, published in the American Journal of Clinical Nutrition, showed that the participants who consumed pecans had significantly reduced levels of "bad" (LDL) cholesterol, total cholesterol and triglycerides. These are the numbers that are directly linked to cardiovascular disease risk.

In addition, replacing snacks with pecans had a positive effect on the participants' overall diet, increasing their intake of healthy fats, plant protein, fibre and antioxidants (polyphenols). Scientists attribute this to the nuts' unique composition, rich in polyunsaturated fats and polyphenols, which reduce inflammation and improve vascular health.

Our study confirmed that even small changes in the diet, such as replacing the usual snacks for pecans, can significantly reduce the risk of heart disease, as well as improve the overall composition of the diet, - says co-author of the study, Professor of the University of Pennsylvania Christina Petersen.

The scientists emphasise that eating nuts, particularly pecans, is an easy and tasty way to improve heart health and nutrition, which is especially important in today's modern lifestyle.

Details: Tricia L Hart et al, Consuming pecans as a snack improves lipids/lipoproteins and diet quality compared with usual diet in adults at increased risk of cardiometabolic diseases: a randomised controlled trial, The American Journal of Clinical Nutrition (2025). DOI: 10.1016/j.ajcnut.2025.01.024