You are here: Home › Food › A Smart, Healthy Snack A Smart, Healthy Snack By Terrah Banakas Last updated on May 6th, 2012 Pin It Hungry? Choose pistachios. Among nuts, pistachios are one of the most nutritious. A one-ounce serving of pistachios, with 49 kernels and 170 calories, gives you a variety of different vitamins, minerals, and other beneficial nutrients. Source: The Smart Snack