Polyunsaturated fatty acids

Polyunsaturated fatty acids (PUFAs) are fatty acids that contain more than one double bond in their backbone. This class includes many important compounds, such as essential fatty acids and those that give drying oils their characteristic property.

Types of polyunsaturated fatty acids

There are two types of polyunsaturated fatty acids: omega-3 and omega-6 fatty acids. Both types are essential for the body and must be obtained through diet.

Omega-3 fatty acids

Omega-3 fatty acids are a type of polyunsaturated fat. The body cannot make these, so they must come from food. These fatty acids reduce inflammation and may help lower risk of chronic diseases such as heart disease, cancer, and arthritis.

Omega-6 fatty acids

Omega-6 fatty acids are a type of essential fatty acid. They are necessary for skin and hair growth, maintaining bone health, regulating metabolism, and maintaining the reproductive system.

Health effects

A diet rich in polyunsaturated fatty acids may reduce the risk of heart disease and lower cholesterol levels. They also provide nutrients to help develop and maintain the body's cells. Oils rich in polyunsaturated fats also contribute vitamin E to the diet, an antioxidant vitamin most people need more of.

Food sources

Polyunsaturated fats are found in high concentrations in sunflower, corn, soybean, and flaxseed oils, and also in foods such as walnuts, flax seeds, and fish.

See also

• Monounsaturated fat
• Trans fat
• Essential fatty acid
• Omega-3 fatty acid
• Omega-6 fatty acid

Polyunsaturated fatty acids Resources
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