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fatty acid

A building block of fats: a chain of carbon atoms that the body uses for energy and to build cells.

FAT-ee AS-id noun

What it means

Fats in food and in the body are made mostly of fatty acids. Saturated fatty acids, found mostly in animal fats, are solid at room temperature; unsaturated ones, found in plant oils, nuts and fish, are liquid. Omega-3 and omega-6 fatty acids are essential: the body cannot make them, so they must come from food. When the body burns large amounts of fatty acids for fuel, the liver makes ketones.

At a glance

Spanishácido graso
Also writtenfatty acids

Related terms

carbohydrate

One of the main nutrients in food, made of sugars and starches, that the body uses for energy.

ketoacidosis

A state in which ketones build up in the blood and make it too acidic.

protein

A nutrient made of chains of amino acids that the body uses to build and repair tissue.

adipose tissue

Body fat: connective tissue made mostly of fat cells that store energy.

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