Processing can significantly impact the healthfulness of food by altering its nutritional content. Highly processed foods often contain added sugars, salts, and preservatives, which can reduce nutrient density and contribute to health issues like obesity and heart disease. Conversely, some processing methods, such as canning or freezing, can preserve nutrients while extending shelf life. The more a food is processed, the greater the chance for loss of essential vitamins and minerals. Therefore, focusing on minimally processed foods helps maintain better overall nutritional values.