These are types of fatty acids that contain one or more double or triple bonds between carbon atoms within the hydrocarbon chain. This means they aren't fully 'saturated' with hydrogen atoms.
congrats on reading the definition of Unsaturated Fatty Acids. now let's actually learn it.
Polyunsaturated Fats: These are fats in which there is more than one double bond in the fatty acid chain.
Omega-3 Fatty Acids: These are polyunsaturated fats which have their first double bond three carbons from the end of the carbon chain. They're essential fats that our body needs but can't produce itself - so they must be included in our diet.
Hydrogenation: This is a chemical process used to convert unsaturated fats (oils) into saturated fats by adding hydrogen.