Health Benefits of Pistachio Giri (Shelled) High-Tier Eye Protection: They boast the highest levels of the antioxidants lutein and zeaxanthin among common nuts, both of which are heavily backed by science to prevent macular degeneration and shield your eyes from blue light damage. Enhanced Blood Vessel Health: They are an excellent source of the amino acid L-arginine, which the body converts into nitric oxide. This compound helps dilate and relax blood vessels, optimizing overall blood flow and reducing strain on the heart. Glucose & Insulin Regulation: Despite their rich flavor, pistachios have a remarkably low glycemic index. Their combination of healthy fats, fiber, and protein helps blunt the blood sugar spike of other carbohydrate-rich foods when eaten together. Weight Management & Fullness: The plant-based fats found in pistachio kernels aren't fully absorbed by the body during digestion, meaning you receive clean energy and lasting fullness while actually taking in slightly fewer calories than expected.