What type of fatty acids are commonly found in commercially produced foods and considered unhealthy?

Trans fatty acids are commonly found in commercially produced foods and are considered unhealthy due to their adverse effects on health. They are primarily created during the process of hydrogenation, which is used to convert liquid vegetable oils into solid fats, enhancing the shelf life and improving texture in processed foods.

Trans fats have been shown to increase low-density lipoprotein (LDL) cholesterol, often referred to as "bad cholesterol," while simultaneously decreasing high-density lipoprotein (HDL) cholesterol, known as "good cholesterol." This imbalance can lead to an increased risk of cardiovascular disease, inflammation, and other health issues.

In contrast, the other types of fatty acids mentioned do have different health implications. While saturated fats can contribute to health risks if consumed in excess, they are not as definitively linked to health issues as trans fats. Polyunsaturated and monounsaturated fats are generally considered healthier options; they can be beneficial for heart health when consumed as part of a balanced diet.