Calories in Pecans: Nutritional facts for Pecans Types

A 100g serving of fresh raw pecans contains 691 calories, while the same quantity of dry-roasted pecans provides 710 calories.

One kilogram (1000g) of fresh raw pecans contains 6910 calories, whereas a kilogram of oil-roasted pecans provides 7150 calories.

A single raw pecan half (2g) contains 14 calories. A whole raw pecan kernel (4g) provides 28 calories. Retail offerings present distinct energy values, as a serving of Fisher Chef's Naturals Pecan Halves (1oz) provides 200 calories, while a serving of Planters Roasted Pecans (1oz) contains 210 calories. A serving of Kirkland Signature Fancy Pecan Halves (1oz) supplies 210 calories.

Pecans provide notable physiological advantages, specifically regarding cardiovascular maintenance, oxidative stress reduction, and metabolic regulation. The nut functions as a dense source of monounsaturated fats and antioxidants. The following points highlight these benefits.

• Supports Cardiovascular Health: Pecans contain high levels of monounsaturated fats, which assist in lowering LDL cholesterol levels. Research by Rajaram, S., et al. (2001), "A monounsaturated fatty acid-rich pecan-enriched diet favorably alters the serum lipid profile of healthy men and women," confirmed that a diet enriched with this nut lowers total cholesterol and preserves beneficial HDL cholesterol.
• Reduces Oxidative Stress: The nut supplies a substantial amount of gamma-tocopherol and other antioxidants that neutralize free radicals. A study by Hudthagosol, C., et al. (2011), "Pecans acutely increase plasma postprandial antioxidant capacity and catechins and decrease LDL oxidation in humans," established that consumption of the nut effectively reduces lipid oxidation and boosts plasma antioxidant defense.
• Improves Metabolic Health: Regular consumption aids in managing insulin sensitivity and cardiometabolic risk factors. Research by McKay, D. L., et al. (2018), "A Pecan-Rich Diet Improves Cardiometabolic Risk Factors in Overweight and Obese Adults," demonstrated that incorporating the food into a diet lowers the risk of cardiometabolic disease without inducing weight gain.

Pecans pose risks for specific individuals due to allergenic proteins and high caloric density. Dietitians recommend limiting intake to 1oz (28g) per day and suggest sunflower seeds as a safe alternative for allergic individuals. Potential adverse effects are outlined below.

• Triggers Allergic Reactions: The nut contains proteins that act as potent allergens, capable of causing anaphylaxis in sensitive subjects. Research by Teuber, S. S., & Sathe, S. K. (2021), "Adult peanut allergy: What we know and what we need to learn," indicates that the 2S albumin protein within the kernel remains stable during processing and provokes severe immune responses.
• Increases Caloric Load: Excessive consumption leads to a caloric surplus due to the high fat content found in the kernel. A study by Jackson, C. L., & Hu, F. B. (2014), " Long-term associations of nut consumption with body weight and obesity," notes that failing to account for the energy density of nuts results in unwanted weight gain despite the metabolic benefits.

Yes, pecans are good for health because the nut supports cardiovascular efficiency, enhances cognitive performance, and aids digestive regularity. Heart health improves through the reduction of LDL cholesterol, a mechanism detailed in the study by Rajaram, S., et al. (2001), "A monounsaturated fatty acid-rich pecan-enriched diet favorably alters the serum lipid profile of healthy men and women." Cognitive health benefits from the presence of antioxidants that protect neural pathways, as explored by Carey, A. N., et al. (2012), " The beneficial effects of tree nuts on the aging brain." Digestive health relies on the high fiber content to maintain bowel regularity and support gut microbiome diversity, a benefit confirmed by research from Anderson, J. W., et al. (2009), "Health benefits of dietary fiber."

Yes, Pecans assist in weight management when consumed in moderation due to the satiating effect of fiber and healthy fats. Dietitians suggest a consumption rate of 1oz (19 halves) per day to maximize satiety without exceeding caloric limits. Research by Flores-Mateo, G., et al. (2013), "Nut intake and adiposity: meta-analysis of clinical trials," indicates that nut consumption does not lead to weight gain and may support weight maintenance. A study by Li, H., et al. (2018), "Nut consumption and risk of metabolic syndrome and overweight/obesity," confirms that higher nut intake correlates with lower body weight and reduced waist circumference. Research by McKay, D. L., et al. (2018), "A Pecan-Rich Diet Improves Cardiometabolic Risk Factors in Overweight and Obese Adults," further establishes that adding the nut to a diet produces no significant increase in body weight or waist circumference.

Caloric density fluctuates based on the processing method and moisture content of the nut. Oil-roasted pecans present the highest energy load at approximately 721 calories per 100g due to the absorption of added fats. Dry-roasted pecans follow closely at 710 calories per 100g as moisture evaporation concentrates the nutrients. Raw pecans offer a slightly lower profile at 691 calories per 100g. Sugar-coated varieties like pralines actually contain fewer calories per 100g (around 450) compared to pure nuts because sugar is less calorically dense than the natural fats found in the nut, though the nutritional quality decreases.

No, pecans are not better than walnuts for protein content because walnuts supply a higher concentration of amino acids per serving. A 100g serving of walnuts provides 15.2g of protein, whereas the same amount of pecans offers 9.2g of protein. Research by the USDA FoodData Central (2019) confirms that walnuts rank higher in protein density among tree nuts compared to pecans. Individuals seeking maximum protein intake from nuts should prioritize walnuts or almonds over pecans.

Yes, pecans are a good source of fiber because a standard serving supplies a significant portion of the daily required intake. A 100g serving of raw pecans provides 9.6g of dietary fiber, which aids in digestion and blood sugar regulation. Research by Anderson, J. W., et al. (2009), "Health benefits of dietary fiber," establishes that foods containing such high fiber levels contribute effectively to gastrointestinal health and satiety. The nut functions as an efficient vehicle for increasing daily fiber consumption.

The pecan (Carya illinoinensis) originated in the Mississippi Valley and the river valleys of central and northern Mexico. Native American tribes utilized the nut extensively as a staple food source long before European arrival, valuing the kernel for the high caloric density and storage stability. The name "pecan" derives from the Algonquin word pacane, meaning a nut requiring a stone to crack. Spanish explorers encountered the tree in the 16th century, referring to the fruit as a "wrinkle-shelled walnut." Thomas Jefferson and George Washington later cultivated the trees in the United States, promoting the spread of the species across the Southern states. Commercial propagation began in the 1880s in Louisiana, transforming the wild harvest into a structured agricultural industry.