Lipids and Fats

The Importance and Roles of Lipids in the Body

• Lipids are a family of compounds that are soluble in organic solvents but not in water.
• Lipids exist in the form of triglycerides, phospholipids, and sterols.
• Triglycerides make up 95% of fats and oils.
• Lipids serve various roles in the body, including being a fuel source and the body's chief storage form for excess energy.
• They also act as an insulating layer under the skin and as a shock absorber around internal organs.
• Lipids are a part of all cell membranes.
• Fat-rich foods are the only source of vitamins A, D, E, and K, as these vitamins are only soluble in fat.
• Lipids contribute to the taste and sensory appeal of foods.
• They slow digestion and provide a feeling of satiety.
• Lipids should make up approximately 30% (20-35%) of our calorie intake.
• Fatty acids are the constituents of triglycerides and vary in their physical and storage properties based on their degree.
• Saturated and unsaturated fats are terms used to describe different types of fatty acids.