Pistachios are a good source of energy, with 557 calories per 100g. They are also high in mono-unsaturated fatty acids, such as oleic acid, and are a good source of antioxidants. Pistachios aid to lower total LDL (bad cholesterol) and raise HDL (good cholesterol) levels when consumed regularly. Pistachios are a good source of vitamin E, notably gamma tocopherol, with roughly 23 grams per 100 grams. Vitamin E is a potent lipid-soluble antioxidant that is necessary for preserving the integrity of mucus membranes and skin cell membranes, as well as providing protection from damaging oxygen-free radicals.

Many vital B-complex vitamins, including as riboflavin, niacin, thiamin, pantothenic acid, vitamin B-6, and folates, are found in Pistachios.Copper, manganese, potassium, calcium, iron, magnesium, zinc, and selenium are among minerals found in these nuts. 100 grams of pistachios give 144 percent of the daily copper requirement.

Copper is a trace mineral that is required for neurotransmission, metabolism, and the formation of red blood cells (RBCs). 

Pistachio are rich in arginine which can alleviate the occurrence of atherosclerosis, helps lower blood lipids and also reduce the risk of heart attacks, lower cholesterol, relieve acute mental stress reaction.