Healthy Fats

Definition  

Healthy fats are unsaturated fats that provide essential fatty acids, support cellular function, and promote overall health. They include monounsaturated fats (MUFAs) and polyunsaturated fats (PUFAs)—especially omega-3 and omega-6 fatty acids. In contrast, trans fats and excess saturated fats are considered unhealthy. 

Common Food Sources 

• Monounsaturated Fats: 

• Olive oil, avocados, nuts (almonds, peanuts), peanut and canola oil 

• Polyunsaturated Fats: 

• Fatty fish (salmon, sardines, mackerel), flaxseeds, chia seeds, walnuts, sunflower oil, soybeans 

• Omega-3 Fatty Acids: 

• EPA and DHA from fatty fish, ALA from flaxseeds, walnuts, and chia 

• Omega-6 Fatty Acids: 

• Corn oil, safflower oil, sunflower seeds (needs balance with omega-3s) 

Health Benefits 

• Cardiovascular Protection: Lowers LDL ("bad") cholesterol and raises HDL ("good") cholesterol 

• Brain and Nerve Function: Essential for brain development and cognitive health 

• Anti-inflammatory Effects: Omega-3s reduce inflammation, supporting joint and immune health 

• Absorption of Vitamins: Enhances absorption of fat-soluble vitamins A, D, E, and K 

• Satiety and Weight Management: Helps regulate appetite and supports metabolism 

Recommended Amounts 

• According to the Dietary Guidelines for Americans (2020–2025): 

• 20–35% of total daily calories should come from fat 

• Limit saturated fat to <10% of calories 

• Focus on replacing saturated fats with unsaturated fats 

• Omega-3 ALA intake: 

• Men: 1.6 g/day 

• Women: 1.1 g/day 

Deficiency & Consequences  

Inadequate intake of healthy fats can lead to: 

• Dry, scaly skin and hair loss 

• Poor wound healing and increased susceptibility to infection 

• Cognitive issues and developmental delays (especially with omega-3 deficiency) 

• Impaired absorption of fat-soluble vitamins