Health News

Which is best for fiber, protein and magnesium?

Key takeaways

  • Both seeds have robust nutritional profiles, offering fiber, protein and key minerals like magnesium and zinc.
  • Whole (unshelled) pumpkin seeds contain the most fiber, while shelled pumpkin seeds offer the most protein and magnesium. However, sunflower seeds remain a nutritional choice.
  • You can easily add either seed to meals, snacks, or smoothies.

Both pumpkin seeds and sunflower seeds are good sources of dietary fiber, protein, magnesium and other essential nutrients. Identifying which seeds are most nutritionally potent may depend on whether or not the seeds have their outer coverings.

Pumpkin seeds or sunflower seeds: nutrition

Pumpkin seeds can be eaten shelled or unshelled, but sunflower seeds should only be eaten shelled (whether or not the seed has its protective outer shell). Seeds without their protective outer covering are considered unhulled, while seeds with their outer covering are considered hulled.

The table below provides a nutritional comparison between sunflower seeds and pumpkin seeds.

Whole unshelled pumpkin seeds (1 oz) Shelled Pumpkin Seeds (1 oz) Hulled sunflower seeds (1 oz, shelled)
Calories 126 163 165
Protein 5 grams (g) 8g 5.5g
Fat 5.5g 14g 14g
Carbohydrates 15g 4g 6.8g
Fiber 5g 1.8g 3g
Magnesium 74 milligrams (mg) 156mg 36.6 mg
Calcium 15mg 14.7 mg 20mg
Zinc 3 mg 2mg 1.5mg
Iron 1 mg 2.3mg 1 mg

Which contains the most fiber?

Pumpkin seeds and sunflower seeds are both excellent sources of fiber. Just 1 ounce of seeds has a nutritional impact when it comes to dietary fiber and other nutrients.

Determining which seed contains the most fiber depends on whether or not the seed has its outer shell:

  • Whole pumpkin seeds (without outer shell): 5g
  • Pumpkin seeds (with outer shell): 1.8g
  • Sunflower seeds (without outer shell): 3g

Unshelled pumpkin seeds provide more fiber than shelled pumpkin seeds and shelled sunflower seeds. When looking to increase your dietary fiber intake, whole (unshelled) pumpkin seeds are your best choice, followed closely by shelled sunflower seeds.

Benefits of fiber

Dietary fiber is essential because of its many health benefits, such as:

Which contains more protein and magnesium?

Pumpkin seeds, shelled and unshelled, provide more magnesium than sunflower seeds. However, shelled pumpkin seeds generally contain the most protein, while unshelled pumpkin seeds and sunflower seeds contain similar amounts.

Opt for shelled pumpkin seeds if you’re looking for higher overall amounts of magnesium and protein.

Benefits of Protein and Magnesium

The benefits of getting enough protein include:

  • Improves satiety and appetite control, which may benefit weight management
  • Helps build and repair body tissues
  • Helps build lean muscle mass and reduce muscle loss
  • Helps with recovery after exercise

The benefits of magnesium for your health include:

  • Helps maintain nerve and muscle function
  • Supports a healthy immune system
  • Helps regulate blood sugar
  • Helps improve bone mineral density
  • Regulates heart rate

How to Add Seeds to Your Diet

You may be wondering how to add pumpkin seeds or sunflower seeds to your diet. First of all, it helps to know the recommended serving sizes. A typical serving of pumpkin and sunflower seeds is 1 ounce. This is roughly a quarter cup, or about 28g.

Both seeds are described as having mild, nutty, and slightly sweet flavors, meaning either can be added to your diet in different ways.

Here are some ideas for ways to eat pumpkin and sunflower seeds:

  • Sprinkled on oatmeal, yogurt or breakfast cereal
  • Mixed into a smoothie
  • Added to soups, salads or grain bowls
  • Mixed with homemade pastries or granola
  • Processed into seed butter
  • Eaten alone as a snack

Keep in mind that adding more fiber to your diet should be a slow process. Increasing fiber too quickly can cause gastrointestinal problems, including bloating, gas, and diarrhea.

Verywell Health uses only high-quality sources, including peer-reviewed studies, to support the facts in our articles. Read our editorial process to learn more about how we fact-check and keep our content accurate, reliable, and trustworthy.
  1. USDA Food Data Center. Seeds, pumpkin and squash seeds, whole, roasted, without salt.

  2. USDA FoodData Central: Pumpkin and squash seeds, pits, toasted, no salt.

  3. USDA Food Data Center. Sunflower seeds, plain, unsalted.

  4. USDA Food Data Center. Sunflower seeds, plain, unsalted.

  5. Bellini M, Tonarelli S, Barracca F et al. Chronic constipation: is a nutritional approach reasonable? Nutrients. 2021;13(10):3386. doi:10.3390/nu13103386

  6. Fu J, Zheng Y, Gao Y, Xu W. Dietary fiber intake and gut microbiota in human health. Microorganisms. 2022;10(12):2507. doi:10.3390/microorganisms10122507

  7. Zhang L, Chen Y, Yang Q et al. The impact of dietary fiber on cardiovascular disease: a scoping review. Nutrients. 2025;17(3):444. doi:10.3390/nu17030444

  8. Miketinas DC, Bray GA, Beyl RA, Ryan DH, Sacks FM, Champagne CM. Fiber intake predicts weight loss and dietary adherence in adults following a low-calorie diet: POUNDS Lost (Preventing Overweight Using Novel Dietary Strategies) study. J Nutr. 2019;149(10):1742-1748. doi:10.1093/jn/nxz117

  9. Nitzke D, Czermainski J, Rosa C et al. Increasing dietary fiber intake for the management of type 2 diabetes mellitus: a systematic review. World J Diabetes. 2024; 15 (5): 1001-1010. DOI: 10.4239/wjd.v15.i5.1001

  10. USDA FoodData Central: Pumpkin and squash seeds, pits, toasted, no salt.

  11. Moon J, Koh G. Clinical evidence and mechanisms of high-protein diet-induced weight loss. J Obes Metab Syndr. 2020;29(3):166-173. doi:10.7570/jomes20028

  12. US Food and Drug Administration. Protein.

  13. Nunes EA, Colenso-Semple L, McKellar SR et al. Systematic review and meta-analysis of protein intake to support muscle mass and function in healthy adults. J Cachexia Sarcopenia Muscle. 2022;13(2):795-810. doi:10.1002/jcsm.12922

  14. Naderi A, Rothschild JA, Santos HO et al. Nutritional strategies to improve post-exercise recovery and subsequent exercise performance: a narrative review. Sports medicine. 2025;55(7):1559-1577. doi:10.1007/s40279-025-02213-6.

  15. MedlinePlus. Magnesium in food.

  16. National Institutes of Health. Magnesium.

  17. Ioniță-Mîndrican CB, Ziani K, Mititelu M, et al. Therapeutic benefits and dietary restrictions of fiber intake: a state of the art. Nutrients. 2022;14(13):2641. doi:10.3390/nu14132641


By Brittany Lubeck, MS, RDN

Lubeck is a registered dietitian and freelance nutrition writer with a master’s degree in clinical nutrition.

Related Articles

Leave a Reply

Your email address will not be published. Required fields are marked *

Back to top button