The healthiest type of fat for the body is unsaturated fat, which includes monounsaturated and polyunsaturated fats. These fats are beneficial for heart health as they help lower levels of LDL cholesterol (bad cholesterol) while increasing levels of HDL cholesterol (good cholesterol). Good sources of unsaturated fats include avocados, olive oil, nuts, and fatty fish such as salmon. In moderation, these fats contribute to overall nutrition, support brain health, and reduce the risk of cardiovascular disease.