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Understanding Pumpkin Seeds: Basic Nutrition Facts

Pumpkin seeds, also called pepitas, are small green seeds found inside pumpkins. They have been eaten for thousands of years and are popular in many cultures around the world. A standard serving of pumpkin seeds is about one ounce, which equals roughly a quarter cup or 28 grams. This small serving contains meaningful amounts of nutrients that your body uses every day.

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One ounce of raw pumpkin seeds contains approximately 151 calories, 5.1 grams of carbohydrates, 5.5 grams of protein, and 13 grams of fat. The fat content is mostly unsaturated fat, which research suggests may support heart health when consumed as part of a balanced diet. Pumpkin seeds also contain about 1.7 grams of fiber per ounce, which plays a role in digestive health.

The mineral content in pumpkin seeds is particularly notable. One ounce provides about 8.5 milligrams of iron, 262 milligrams of phosphorus, 588 milligrams of potassium, and 168 milligrams of magnesium. These minerals are involved in bone health, energy production, and muscle function. Pumpkin seeds also contain zinc, manganese, and copper in smaller amounts.

Beyond basic nutrients, pumpkin seeds contain various plant compounds called phytonutrients. These include carotenoids like beta-carotene and lutein, as well as polyphenols and other compounds. The exact amount of these substances varies depending on growing conditions, harvest time, and storage methods.

Practical Takeaway: Understanding the basic nutrition profile of pumpkin seeds helps you make informed choices about including them in meals and snacks. A small handful (one ounce) provides a range of nutrients, making pumpkin seeds a nutrient-dense food option to consider for your diet.

Vitamins and Minerals Found in Pumpkin Seeds

Pumpkin seeds are a rich source of several vitamins and minerals your body needs. Magnesium is one of the most abundant minerals, with one ounce providing about 168 milligrams, or roughly 40% of the daily recommended amount for adult women and 32% for adult men. Magnesium supports muscle and nerve function, helps control blood sugar levels, and plays a role in creating energy within cells.

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Manganese is another mineral present in pumpkin seeds at about 1.3 milligrams per ounce. This mineral contributes to bone development and wound healing. Copper, present at about 0.3 milligrams per ounce, helps your body form red blood cells and supports nervous system function. Zinc content in pumpkin seeds, at approximately 8.5 milligrams per ounce, plays roles in immune function, protein synthesis, and DNA creation.

Pumpkin seeds contain B vitamins including thiamine, riboflavin, niacin, and pantothenic acid. These vitamins help your body break down food and convert it to energy. The seeds also contain folate, a B vitamin that is particularly important for people planning pregnancies and for proper cell division in all people.

The vitamin E content in pumpkin seeds comes primarily from compounds called tocopherols. One ounce of pumpkin seeds provides about 1.7 milligrams of vitamin E, or roughly 11% of the daily recommended amount. Vitamin E functions as an antioxidant in your body. Pumpkin seeds also contain small amounts of vitamin K, which your body uses for blood clotting and bone metabolism.

Phosphorus is abundant in pumpkin seeds at 262 milligrams per ounce. Along with calcium, phosphorus makes up the structure of bones and teeth. Potassium, at 588 milligrams per ounce, helps maintain healthy blood pressure and supports heart function.

Practical Takeaway: If you are looking to add sources of magnesium, zinc, manganese, or other minerals to your diet, pumpkin seeds offer several of these nutrients in one food. Learning which minerals you may need more of can help guide your food choices.

Healthy Fats and Protein Content

Pumpkin seeds contain about 13 grams of fat per ounce, but the type of fat matters. Roughly 9 grams of this fat is unsaturated fat, which includes both polyunsaturated and monounsaturated varieties. Research published in major health organizations suggests that unsaturated fats may support heart health when they replace saturated fats in your diet. The remaining fat (about 2-3 grams) is saturated fat and a very small amount is trans fat.

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One particularly noteworthy component in pumpkin seed oil is linoleic acid, a polyunsaturated fat. Linoleic acid is an omega-6 fatty acid that your body cannot produce on its own, making it essential to obtain through food. Some research suggests that linoleic acid may play a role in supporting skin health and may have anti-inflammatory properties, though more research is ongoing in these areas.

Pumpkin seeds also contain alpha-linolenic acid, an omega-3 fatty acid, though in smaller amounts than linoleic acid. The balance and ratio of these fats in pumpkin seeds may contribute to various health-related discussions about the seeds' nutritional value.

Protein content in pumpkin seeds is significant at about 5.5 grams per ounce. For people following plant-based diets, pumpkin seeds can contribute to daily protein intake. This protein contains amino acids, including all nine essential amino acids, though pumpkin seeds alone do not provide complete protein in the quantities typically consumed. Combining pumpkin seeds with other protein sources creates a more complete protein profile.

The fiber content at 1.7 grams per ounce works alongside the protein to create a filling snack. Fiber and protein together slow digestion, which may help maintain steady energy levels and support satiety between meals.

Practical Takeaway: Incorporating pumpkin seeds into your diet can contribute to fat and protein intake in a way that fits various dietary approaches. Understanding the types of fats in pumpkin seeds helps you evaluate how they fit into your overall nutritional goals.

Antioxidants and Plant Compounds in Pumpkin Seeds

Beyond basic vitamins and minerals, pumpkin seeds contain various plant compounds with antioxidant properties. Carotenoids are a group of pigments that give pumpkins their orange color and are also present in the seeds themselves. These include beta-carotene, which your body can convert into vitamin A, as well as lutein and zeaxanthin. Studies have examined these compounds for their potential roles in eye health, though research is still developing.

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Phenolic compounds, including various polyphenols, are present in pumpkin seeds. These are plant chemicals that function as antioxidants in your body. Antioxidants may help neutralize molecules called free radicals, though the exact health implications of this process in everyday diets continues to be researched. The specific phenolic compounds and their concentrations can vary based on seed variety and growing conditions.

Tocopherols, which are forms of vitamin E, are present in pumpkin seeds as antioxidants. Gamma-tocopherol is the predominant form in pumpkin seeds, and research has explored whether this particular form may have unique roles in supporting health. The seeds contain very little alpha-tocopherol compared to other plant sources of vitamin E.

Lignans are another class of compounds found in pumpkin seeds. These plant compounds are also present in flaxseeds, sesame seeds, and other plants. Research has examined lignans for their potential connections to various health outcomes, though more evidence is needed to draw definitive conclusions.

Phytic acid, also called phytate, is present in pumpkin seeds as are many plant seeds. Phytic acid can bind to certain minerals and reduce their absorption in your digestive system. However, soaking, sprouting, or roasting pumpkin seeds can reduce phytic acid content, potentially increasing mineral availability. This is one reason different pumpkin seed preparations may offer different nutritional profiles.

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