A new study warns that not all plant-based diets are equally healthy. Diets high in ultra-processed plant-based foods may increase the risk of heart disease. Experts say choosing fresh, whole plant foods is key for keeping the heart healthy. This shows that food quality matters more than just eating plant-based.
Researchers followed the eating habits of over 63,800 adults for several years. They found that people who ate whole, unprocessed plant foods were 44 percent less likely to develop heart disease. In contrast, those who relied on ultra-processed plant-based foods had a 46 percent higher risk of heart disease. Their overall risk of heart problems also rose by 38 percent.
Common ultra-processed plant-based foods include supermarket bread, ready-made pasta, canned soups, and packaged salads with heavy dressings. These foods often have added sugar, preservatives, and unhealthy fats. Experts warn that relying on these foods can cancel out the health benefits of a plant-based diet.
Lead researcher Clémentine Brio said, “Simply cutting animal products is not enough. We must focus on unprocessed plant foods to protect the heart.” She added that how food is processed matters more than whether it comes from plants or animals. People who eat some animal foods but avoid ultra-processed items have similar heart health as those on healthy plant-based diets.
Nutrition experts suggest cutting down on ultra-processed plant-based foods and eating more fresh, whole foods. Combining this with regular exercise, avoiding smoking, and keeping a healthy lifestyle improves heart health. They also recommend cooking at home using natural ingredients instead of ready-made meals.
This study shows that plant-based diets are not automatically healthy. People need to pay attention to how food is processed. Choosing fresh, minimally processed foods lets people enjoy the benefits of a plant-based lifestyle without added risks.
Overall, the research emphasizes that the quality of plant-based foods determines their effect on the heart. Diets with fresh, natural foods lower heart disease risk, while ultra-processed plant-based foods may increase it. Being aware of food processing helps people make better choices for long-term heart health.

