Final answer:
Trans fats are the least healthy, followed by saturated fats, and unsaturated fats are the healthiest. They are ranked based on their impact on human health.
Step-by-step explanation:
The three types of fats ranked from least healthy to most healthy are:
- Trans fats: Trans fats are unsaturated fats that contain types of bonds that are rare in nature. They are typically created in an industrial process called partial hydrogenation, and they are known to be detrimental to human health.
- Saturated fats: Saturated fats consist of triglycerides whose carbon chains consist entirely of carbon-carbon single bonds. They are found mainly in animal foods and can increase cholesterol levels in the blood, leading to heart disease.
- Unsaturated fats: Unsaturated fats, which include monounsaturated and polyunsaturated fats, are found mainly in plant foods and fish. They are needed in small amounts for good health and are considered healthier than saturated and trans fats.