Walnuts may seem like a simple snack, but nutrition experts continue to rank them among the healthiest foods for heart health and overall wellness. Studies linked to the Mediterranean diet show that people who regularly eat walnuts and other healthy fats often experience improvements in cholesterol, blood pressure, inflammation, insulin function, and even weight control. One major study, called PREDIMED, found that participants following a Mediterranean-style diet with olive oil or mixed nuts had better health outcomes than those simply trying to follow a low-fat diet.
Researchers believe walnuts are powerful because of their unique mix of nutrients. As Dr. Emilio Ros explained, “the healthy ingredient of walnuts is walnuts.” He noted that walnuts contain “unsaturated fatty acids,” fibre, protein, polyphenols, vitamin E, folic acid, magnesium, potassium, and plant-based omega-3 fatty acids. Experts say these nutrients likely work together to create stronger benefits than any single nutrient alone.
Walnuts also stand out from other nuts because they contain especially high amounts of “linoleic acid, alpha-linoleic acid and total polyphenols,” according to Dr. Ros. These compounds are connected to heart protection, antioxidant support, and reduced inflammation throughout the body. Their plant-based omega-3 content is another reason many nutritionists recommend them regularly.
Dr. Ros also explained that raw walnuts may provide the greatest benefits. “Cooking the nuts may destroy the outer pellicle (the skin), which contains most of the antioxidants,” he said. While vitamins and minerals remain mostly unchanged, eating walnuts raw helps preserve more antioxidants.
Experts recommend eating about a handful of walnuts daily, or at least several times per week. Adding them to oatmeal, yogurt, salads, or snacks can be a simple way to support long-term heart health and better nutrition.
