29 Jun Benefits of black olivesBlack olives are one of the richest sources of mono-unsaturated fats, vitamin A and iron. The mono-unsaturated fatty acids contained in black olives according to the American Heart Association, have the ability to reduce levels of bad cholesterol. Black olives provide vitamin A, which is a type of fat-soluble vitamin necessary for eye health and also dermal health. Black olives are a good source of iron, a mineral the body needs to produce new red blood cells and transport oxygen to every cell in the body, whose deficiency results in pathologies as anemia.