Which type of fat is considered unhealthy and should be limited in the diet?

Trans fats are considered unhealthy and should be limited in the diet due to their adverse effects on heart health. These types of fats are primarily found in partially hydrogenated oils, which are often used in processed and fried foods. Trans fats can increase levels of LDL (bad cholesterol) while simultaneously lowering HDL (good cholesterol), leading to an increased risk of cardiovascular disease. The negative impact of trans fats on cholesterol levels and heart health has led health organizations worldwide to recommend their elimination from the diet.

In contrast, saturated fats are found in animal products and some plant oils and should be consumed in moderation, though recent research has indicated that they may not be as harmful as once thought when eaten in a balanced diet. Monounsaturated fats are actually beneficial and are linked to improved heart health, while omega-3 fatty acids are essential fats that provide numerous health benefits, including anti-inflammatory properties and support for brain health.