Processed snacks are considered unhealthy because they often contain high levels of unhealthy ingredients such as added sugars, salt, unhealthy fats, and artificial ingredients. They are often high in calories and low in essential nutrients, leading to weight gain and an increased risk of chronic diseases if consumed regularly. Additionally, many processed snacks are high in sodium, which can contribute to high blood pressure and increase the risk of heart disease. Processed snacks also tend to be low in fiber, which can lead to constipation and other digestive issues. Overall, consuming processed snacks on a regular basis can have a negative impact on health and should be limited.