Pistachio tree has multipurpose value. Kernel of pistachio contains 20-30% carbohydrates, 3-8 % sugars, 8-11% dietary fiber, 40-60% fat 15-22% protein and many vitamins. Because of taste, pistachio is 3-4 time more expensive then walnut and almond.
The kernels are often eaten whole, either fresh or roasted and salted, and are also used in pistachio ice cream, pistachio butter, pistachio paste and confections such as baklava, pistachio chocolate, pistachio halva, pistachio lokum or biscotti and cold cuts such as mortadella.
Avicenna, in his "Canon of Medicine" prescribed it against liver diseases and as an aphrodisiac.
32-63 grams per day of pistachio seeds can significantly elevate plasma levels of lutein, alpha-carotene, beta-carotene, and gamma-tocopherol. Preliminary studies show pistachios have antibacterial activity against some intestinal pathogens.
People in Middle East countries (Iran, Turkey, Syria) call pistachio “green gold” or “golden tree” because of high profits from the tree. These countries have long history of cultivation, diverse varieties and major source of livelihood, especially in southern provinces.