In general, animal based foods have higher saturated fat levels in comparison to plant-based foods that are generally low in saturated fat. Saturated fat is often a solid fat like butter or cheese while unsaturated fat is often liquid, like olive oil. Health care professionals urge people to limit saturated fat intake and substitute them with unsaturated fats in the diet to maintain normal cholesterol content in the blood. In all, a varied, balanced diet and a healthy lifestyle are recommended for good health.