Pistachio Nutrition Facts: A Complete Guide to This Powerful Nut
Pistachio nutrition facts reveal one of the most well-rounded nutritional profiles of any tree nut, combining macronutrient balance with an impressive micronutrient and antioxidant content. As both a culinary ingredient and a functional food, pistachios have earned significant attention from nutrition researchers and health-conscious consumers worldwide.
Pistachio Nutrition: The Macronutrient Foundation
Per 28-gram (1-ounce) serving of shelled pistachios (approximately 49 nuts):
- Calories: 159 kcal
- Protein: 6 grams — one of the highest protein contents among tree nuts
- Total Fat: 13 grams — predominantly unsaturated (heart-healthy)
- Saturated Fat: 1.5 grams
- Carbohydrates: 8 grams
- Dietary Fiber: 3 grams
- Net Carbohydrates: approximately 5 grams
This macronutrient balance makes pistachios an unusually satisfying snack — the protein and fiber combination triggers satiety signals that reduce overall calorie consumption, which research has associated with weight management benefits despite pistachios’ relatively high calorie density.
Key Vitamins in Pistachios
Vitamin B6 (Pyridoxine)
Pistachios are one of the richest food sources of vitamin B6 among nuts, providing approximately 28% of the recommended daily intake per ounce. B6 is essential for neurotransmitter synthesis, immune function, and protein metabolism.
Thiamine (Vitamin B1)
Thiamine supports energy metabolism and nervous system function. Pistachios contribute meaningfully to daily thiamine intake.
Vitamin E
As a fat-soluble antioxidant, vitamin E in pistachios helps protect cell membranes from oxidative damage, supporting skin health and immune defense.
Vitamin K
Pistachios provide vitamin K, which plays a central role in blood clotting and bone metabolism.
Key Minerals in Pistachios
Phosphorus
Pistachios are rich in phosphorus, which works with calcium to build and maintain bones and teeth, and supports energy metabolism through ATP production.
Potassium
With approximately 290 mg of potassium per ounce, pistachios contribute to heart health, healthy blood pressure, and proper muscle function.
Copper
Copper is essential for iron absorption, collagen formation, and antioxidant enzyme activity. Pistachios are one of the better nut sources of dietary copper.
Manganese
Manganese supports bone formation and antioxidant defense. Pistachios provide a significant portion of daily manganese needs.
Magnesium
Magnesium supports over 300 enzymatic reactions in the body, including blood sugar regulation, nerve function, and muscle recovery.
Antioxidants: Where Pistachios Stand Out
Beyond standard vitamins and minerals, pistachios contain two antioxidants rarely found in significant quantities in other nuts:
- Lutein and zeaxanthin: These carotenoids accumulate in the retina and are directly associated with reduced risk of age-related macular degeneration and cataracts
- Resveratrol: Also found in red wine and grapes, resveratrol in pistachios has been studied for its cardiovascular and anti-inflammatory properties
- Gamma-tocopherol: A form of vitamin E with particularly strong anti-inflammatory activity
Health Benefits Linked to Pistachio Nutrition
Heart Health
Multiple clinical studies show that regular pistachio consumption reduces LDL cholesterol, raises HDL cholesterol, and lowers blood pressure — outcomes consistent with their healthy fat, fiber, and antioxidant profile.
Blood Sugar Regulation
Despite containing carbohydrates, pistachios have a low glycemic index. Research shows that replacing refined carbohydrates with pistachios reduces post-meal blood glucose spikes, making them particularly valuable for individuals managing blood sugar levels.
Gut Microbiome Support
The fiber in pistachios functions as a prebiotic — feeding beneficial gut bacteria including Lactobacillus and Bifidobacterium species. Studies show measurable positive changes in gut microbiome composition after regular pistachio consumption.
Weight Management
Despite being calorie-dense, pistachios are associated with weight maintenance rather than weight gain in prospective studies. The effort required to shell in-shell pistachios also naturally slows eating pace, reducing total calorie intake per session.
Iranian Pistachios and Nutritional Quality
Not all pistachios are nutritionally equal. Iranian pistachio varieties — particularly Akbari, Kalle Ghouchi, and Ahmad Aghaei — have higher fat content and more complex flavor profiles than California varieties due to Iran’s specific climate conditions, which concentrate nutrients in the kernel. Zartar Sorkh Eurasia sources certified organic pistachios from verified growers in Khorasan province, ensuring nutritional integrity from cultivation to packaging.