Not only are pistachio nuts tasty and fun to eat, they’re also super healthy. Technically a fruit, these edible seeds of the Pistacia vera tree contain healthy fats and are a good source of protein, fiber and antioxidants. They also contain several essential nutrients and have benefits for weight loss, as well as heart and gut health. Interestingly, people have been eating pistachios since 7,000 BC. Nowadays, they’re very popular in many dishes, including ice cream and desserts.