Pumpkin Seeds Can Help Combat Diabetes, Heart Disease & Cancer Cells

October 29, 2025

Pumpkins are an integral part of the holiday season. From pumpkin carving to sweet pumpkin spice and fresh pumpkin pie, it’s hard to imagine fall without this bright orange fruit. Unfortunately, pumpkin seeds, much like pumpkin seed oil, often get lost in the mix and are frequently discarded or ignored altogether in favor of the vibrant pumpkin pulp.

However, there are many benefits of pumpkin seeds that make them a worthy addition to your diet, both during the holidays and all year round. Pumpkin seeds benefits can include better heart health, improved blood sugar levels, enhanced sleep quality and more.

What are pumpkin seeds?

Did you know that pumpkin seeds were used in many forms of traditional medicine? The pumpkin (Cucurbita maxima Linn.) is a cultivar of the squash plant that is thought to originate in North America thousands of years ago. In fact, archaeologists actually found these seeds in certain areas of Mexico that date back to around 7000 B.C.

They’ve long been prized for both their unique flavor and potent healing properties. For example, indigenous groups in North America often used them for their gut-healing effects as a treatment for parasitic infections and tapeworm symptoms. Meanwhile, Aztec groups used them as both a source of nutrition and a ritual offering for religious ceremonies.

On an Ayurvedic diet, they are considered to be alkalizing and thought to nourish the blood, act as a natural diuretic, suppress a big appetite and improve reproductive health in men.

In Traditional Chinese Medicine, they are also used to help treat a variety of conditions, such as parasitic infections and stomach pains. Plus they’re thought to support lactation in mothers and promote healthy digestion.

What are the benefits of eating pumpkin seeds? They’re a good source of many important nutrients, including

amino acids
phytosterols
unsaturated fatty acids
phenolic compounds
tocopherols
cucurbitacins
valuable minerals

Today we know from studies that these valuable seeds contain bioactive compounds that have activities such as anthelmintic, antidiabetic, antidepressant, antioxidant, antitumor and cytoprotective effects.

Nutrition facts

A one-ounce serving of unsalted pumpkin seeds (about 28.4 grams) contains approximately:

Calories: 163
Total Carbohydrates: 4.2 g
Fiber: 1.8 g
Sugar: 0.4 g
Total Fat: 13.9 g
Saturated Fat: 2.4 g
Polyunsaturated Fat: 5.6 g
Monounsaturated Fat: 4.5 g
Protein: 8.5 g
Sodium: 5.1 mg (<1% DV*)
Copper: 0.4 mg (44% DV*)
Manganese: 0.9 mg (39% DV*)
Magnesium: 156 mg (37% DV*)
Phosphorus: 333 mg (27% DV*)
Zinc: 2.2 mg (20% DV*)
Iron: 2.3 mg (13% DV*)
Niacin: 1.3 mg (8% DV*)
Potassium: 223 mg (5% DV*)
Selenium: 2.7 mcg (5% DV*)

*Daily Value: Percentages are based on a diet of 2,000 calories a day.

In addition to the nutrients listed above, pumpkin seed’s nutrition profile also contains a small amount of folate, vitamin K, riboflavin, vitamin E, calcium, vitamin B6, thiamine, vitamin C and vitamin A.

In terms of their fat content, they are full of a variety of essential fatty acids, including capric, myristic, stearic, oleic, linoleic and linolenic.

Pumpkin seeds benefits

1. Rich in disease-fighting antioxidants

Pumpkin seeds are loaded with antioxidants, which are powerful compounds that can fight free radical formation and protect cells against oxidative stress. Some research also indicates that antioxidants may aid in the prevention of chronic conditions like heart disease, cancer, diabetes and autoimmune disorders.

According to one animal study published in Pharmacological Research, pumpkin seed oil (made from the fat found inside the seeds) was able to reduce inflammation and prevent free radical damage in rats with arthritis. Another animal study out of South Africa showed that a specific type of protein extracted from pumpkin seed was effective at protecting against liver damage thanks to its powerful antioxidant properties.

As for human research, a randomized, clinical trial in postmenopausal women showed that daily supplementation with pumpkin seed oil (three grams a day for six weeks) produced measurable improvements in arterial hemodynamics (lower augmentation index and reduced brachial/central systolic blood pressure), outcomes that the authors link to the oil’s bioactive composition, namely tocopherols, phenolic compounds and unsaturated fatty acids. These are established antioxidant molecules that can protect tissues from oxidative damage and inflammation.

2. Boost heart health

Because they are a good source of electrolytes, such as magnesium and potassium, plus healthy fatty acids, pumpkin seeds, and pumpkin seed oil in particular, have been shown to boost heart health and help reduce the risk of coronary heart disease in several different ways.

One study found that pumpkin seed oil supplements were able to decrease diastolic blood pressure while increasing levels of beneficial high‑density lipoprotein (HDL) cholesterol in the blood of adults.

In another randomized, double‑blind, placebo‑controlled pilot study involving 35 post‑menopausal women, supplementation with two grams per day of pumpkin seed oil for 12 weeks resulted in a significant increase in HDL cholesterol and a decrease in diastolic blood pressure. This suggests that pumpkin seed oil may improve lipid profiles and cardiovascular health in this population.

Plus, pumpkin seeds may also increase levels of nitric oxide in the body. This can dilate the blood vessels and promote blood flow to help the heart work more efficiently.

3. Help stabilize blood sugar

One of the top pumpkin seeds benefits is their ability to regulate blood sugar levels, which is important for preventing diabetes symptoms, such as increased thirst, fatigue, frequent urination and nausea.

These seeds are rich in protein and fiber, both of which can slow the absorption of sugar in the bloodstream to promote better blood sugar control.

A randomized, single‑blind, crossover study involving normoglycemic adults published in Nutrients Research found that consuming 65  grams of shelled pumpkin seeds in a high‑carbohydrate mixed meal resulted in a 35 percent reduction in the incremental area under the post‑meal blood‑glucose curve compared with the same meal without seeds. This suggests that pumpkin seeds may help moderate post‑prandial blood‑sugar spikes, supporting their role in stabilizing blood glucose levels.

4. Promote sleep quality

Can’t sleep? You may want to consider adding a dose of pumpkin seed to your daily diet.

The seeds are a good source of several nutrients that are associated with better sleep quality, including tryptophan and magnesium.

Tryptophan is an essential amino acid that plays a role in the production of “feel good” chemicals in the body, including serotonin, melatonin, niacin and nicotinamide. This explains why tryptophan is well-known for its ability to enhance sleep quality, especially in those with sleep disturbances.

Meanwhile, they’re also a good source of magnesium, an important micronutrient that has been shown to help improve several measures of insomnia, including sleep efficiency, length of sleep and the amount of time that it takes to fall asleep at night.

5. May improve male fertility

Some research involving both humans and animals indicates that pumpkin seeds may be especially beneficial for male fertility due to their rich content of phytonutrients, including antioxidants, fatty acids and zinc. Plus, they can promote prostate health.

One 2012 animal model found that supplementing with pumpkin oil was effective at preventing sperm abnormalities and increasing sperm count in rats. Another study showed that pairing the oil with saw palmetto was able to decrease symptoms and improve quality of life in men with benign prostatic hyperplasia (BPH), a common condition characterized by the enlargement of the prostate gland.

Why are pumpkin seeds also good for females? The fats they provide support reproductive health in both sexes, since the body requires fatty acids to make certain hormones. Plus they have certain phytoestrogen effects that can benefit some women who have low levels of estrogen.

6. Help fight cancer cell growth

Thanks to its high content of antioxidants, pumpkin seeds benefits may include helping fight the growth and spread of cancer cells to aid in cancer prevention.

One in vitro research study found that phytoestrogen extracts of pumpkin seeds had anti-cancer properties and could possibly play a role in the prevention and treatment of breast cancer.

Additionally, according to a review published in Food Research International, diets rich in pumpkin seeds have been linked to a lower risk of several types of cancer, including stomach, lung, colorectal and breast cancer.

7. Aid bladder function

Pumpkin seeds have been shown to improve symptoms of BPH, a condition that can cause difficulty urinating in men. Not only that, but pumpkin oil may also help improve other aspects of bladder function.

One study showed that it was able to significantly improve symptoms of overactive bladder and correct urinary dysfunction.

8. May help strengthen bones

Pumpkin seeds are a rich source of magnesium and phosphorus, both of which play important roles in bone formation and maintenance. Magnesium is required for the proper function of osteoblasts (bone-forming cells). Several reviews point out that higher dietary magnesium intake is associated with higher bone mineral density.

Phosphorus is a key structural component of bone mineral. Moreover, the high zinc content of pumpkin seeds also supports bone health by assisting in collagen synthesis and bone matrix formation.

While direct human trials solely on pumpkin seeds and bone fractures are limited, the nutrient profile strongly supports a bone-health benefit.

9. May enhance digestion

Pumpkin seeds contain both dietary fiber (especially if eaten with shell or as “pepitas”) and minerals like magnesium, which together support healthy digestion. Dietary fiber helps promote regular bowel movements, maintains stool bulk and supports the microbiome.

Additionally, magnesium functions as a mild laxative by helping draw water into the intestines and relaxing smooth muscle in the gut, aiding transit and reducing constipation risk.

Thus, including pumpkin seeds regularly can contribute to better gut motility and overall digestive comfort.

10. Can benefits weight loss

While pumpkin seeds are calorie-dense, their combination of fiber, protein and healthy fats makes them a potentially useful snack to support weight management. The fiber and protein help increase feelings of fullness, reduce hunger and slow the absorption of carbohydrates.

That said, it’s important to emphasize moderation. Because they are energy-dense, portion size matters.

Some sources say that while pumpkin seeds can support weight loss, they are not a magic bullet. Weight loss still depends on overall calorie balance and diet quality.

In practical terms, using them as a nutritious snack in place of less-healthy options (rather than simply adding large amounts) is likely the most effective strategy.

Pumpkin seeds vs. sunflower seeds

Without a doubt, pumpkin seeds and sunflower seeds are two of the most popular varieties enjoyed for their savory flavor and incredible versatility. Both are high in fiber, protein and heart-healthy fats, plus an assortment of essential vitamins and minerals.

However, there are several unique differences between these two power-packed ingredients.

Pumpkin seeds are flat, oval-shaped and light green. They’re also enclosed in a white hull.

Sunflower seeds, on the other hand, are tan and covered by black-striped shells. Both have smooth textures and light, nutty tastes that work well with just about any spice or seasoning.

In terms of nutrition, a single ounce of pumpkin seeds typically supplies a higher amount of protein and a lower amount of calories, fat and fiber. Pumpkin seeds are also richer in magnesium, iron and manganese, while sunflower seeds are a better source of pantothenic acid, folate and copper.

How to eat

Pumpkin seeds are easy to find at most online retailers and grocery stores. They are typically located in the snack aisle alongside other seeds like sunflower seeds.

If you have difficulty finding them at your local store, you can also look for “pepitas.” Pepitas are the same thing but without the shell.

If possible, purchase raw seeds or those that are roasted without extra oil. Alternatively, you can also go directly to the source and try seeding a pumpkin at home instead.

Studies show that roasting the seeds can actually improve absorption of their antioxidants and make them easier to digest.

After you get your hands on some of these super seeds, you may wonder how to clean pumpkin seeds, how to dry pumpkin seeds and how to prepare pumpkin seeds for eating. If they’re fresh, start by rinsing them with cold water in a colander, and then shake them dry. Avoid using a paper towel or dish cloth to dry them as they may get stuck.

There are plenty of different methods for how to cook pumpkin seeds. Roasting them in the oven is perhaps the most common:

Spread them in a thin layer on an oiled baking tray, and bake in the oven at 300 degrees Fahrenheit for about 30 minutes.
Remove from the oven, and toss with olive oil, salt and your choice of seasoning, such as paprika, oregano, cumin or chili powder.
Place back in the oven, and bake about 20 more minutes, until they’re crispy with a nice golden color.

After roasting them you can enjoy them as a delicious snack; toss them over salads, cereal or yogurt; or mix them into trail mix alongside a variety of other nuts and seeds. You can also enjoy raw pumpkin seeds as a healthy and delicious no-fuss snack that carries the same assortment of pumpkin seeds benefits.

Here are some more pumpkin seeds recipes to try:

Is it OK to eat pumpkin seeds every day? Yes, as long as you tolerate them well and don’t overdo it.

Stick to about a quarter cup per day, since they are relatively high in calories and also have phytoestrogen effects. (Too much every day may contribute to hormone-related symptoms.)

Risks and side effects

Can pumpkin seeds be bad for you? Many processed, prepackaged pumpkin seed products are high in sodium or contain additives and extra ingredients that can be harmful for your health.

Select products that are low in sodium with minimal ingredients listed on the label. Better yet, choose raw varieties, or try making them at home yourself.

Additionally, although the shell of the pumpkin seed is edible, it may irritate the stomach and cause digestive issues for some people. It can also be difficult to chew for those with chewing or swallowing difficulties.

If you find that you’re unable to tolerate shelled pumpkin seeds, opt for hulled ones instead. They carry nearly the same nutrient profile and pumpkin seeds benefits.

Be sure to keep intake in moderation. Eating large amounts may cause adverse side effects like constipation, gas or bloating.

Additionally, these seeds contain a concentrated amount of calories, so going overboard could potentially contribute to weight gain.

Many people also wonder: Can dogs eat pumpkin seeds?

Whether raw or roasted, they can be safely enjoyed by most pups and are sometimes even added to natural dog treat recipes. However, skip the heavily processed or sweetened varieties you might find at the store.

Frequently asked questions

Who should not take pumpkin seeds?

Most healthy individuals can enjoy pumpkin seeds in moderation. However, those who should be cautious include:

People with seed or nut allergies. (Even though seeds aren’t always covered under “nuts,” cross-reactivity is possible.)
Individuals on very restricted-calorie diets where the additional calories would displace other nutrients (since seeds are high in fat and energy).
People with conditions that require very low-fat or low-fiber diets (e.g., certain digestive disorders) may need to moderate intake.
Anyone taking medications or supplements that might interact with high magnesium or high zinc intake should consult a healthcare provider.
Pets (for example, dogs) need special consideration.

Which hormone does pumpkin seeds increase?

Pumpkin seeds contain zinc and other nutrients that support hormone production, particularly sex hormones. Zinc plays a role in testosterone synthesis in males and in overall hormonal health in both sexes. Some integrative health sources suggest pumpkin seeds may support progesterone/estrogen balance via “seed-cycling” practices (although evidence is limited).

However, it’s more accurate to say they support hormone production and balance rather than reliably increase a specific hormone in all individuals. Always treat such claims with caution, and rely on overall diet and lifestyle.

Can I eat 10 pumpkin seeds daily?

Yes, eating about 10 pumpkin seeds daily is generally safe for most people and would contribute to nutrient intake (magnesium, zinc, healthy fats, fiber, etc.). But since an ounce (about 28 grams or roughly a handful) is often used as a standard serving, 10 seeds is a small portion.

If you’re using them as part of your diet, aim for a moderate portion (for example, a quarter-cup or so) rather than just a few seeds to more reliably obtain the nutrition benefits of pumpkin seeds. Also ensure they fit within your overall calorie and nutrient goals.

What do pumpkin seeds do to your gut?

In the gut, pumpkin seeds support digestive health through several mechanisms:

They provide dietary fiber, which helps regulate bowel movements, supports the gut microbiome and may help prevent constipation.
The magnesium content can help relax intestinal smooth muscle and draw water into the colon, aiding transit.
Some studies suggest pumpkin seed components may support gut microbiota and have mild anti-inflammatory effects in the digestive tract.
For many people, incorporating pumpkin seeds can help improve stool regularity and gut comfort, though individuals with severe gastrointestinal sensitivity should introduce them gradually.

How many pumpkin seeds should you eat a day?

A commonly recommended portion is about one ounce (28 grams), which is roughly a small handful of shelled seeds. This portion will provide a meaningful amount of magnesium, zinc, healthy fats and protein.

For those with calorie or fat intake restrictions, a smaller portion may be more appropriate. The key is to include them as part of a balanced diet rather than rely on very large volumes.

What happens when we eat pumpkin seeds every day?

Regular daily intake of pumpkin seeds (within moderate portion size) may yield several positive outcomes. Pumpkin seeds benefits include:

Improved intake of minerals like magnesium and zinc, which support bone, heart, metabolic and reproductive health.
Better digestive regularity from the fiber and magnesium.
Potential support for weight management (through satiety and nutrient density) when used instead of less healthy snacks.
A boost in antioxidant intake and healthy unsaturated fats.

On the flip side, if consumed in excess, risks include taking in more calories than intended (leading to weight gain), potential for digestive discomfort (gas and bloating) if the fiber or fat load is high and possible interference with mineral absorption due to phytic acid in seeds.

Thus, pumpkin seeds benefits come from moderation and consistency, not extreme consumption.

What organ is pumpkin seed good for?

Several organs and systems may particularly benefit from pumpkin seed intake, such as:

The prostate and bladder/urinary system: Some human and animal studies show pumpkin seed oil or extract improve symptoms of benign prostatic hyperplasia and overactive bladder.
The bones (skeletal system): Magnesium, phosphorus and zinc supporting bone mineralization.
The digestive tract/gut: Fiber, magnesium and anti-inflammatory effects aid gut health.
The heart/cardiovascular system: Magnesium, unsaturated fats and antioxidants support blood pressure, lipid levels and endothelial function.

So while not one single organ, pumpkin seeds support multiple organ systems through their nutrient profile.

What are the pros and cons of eating pumpkin seeds?

Pros:

Highly nutritious: rich in magnesium, zinc, phosphorus, healthy fats, protein and fiber.
Supports multiple health areas: bone health, heart health, digestion, hormonal/metabolic health.
Easy to include in diet: snack, sprinkled onto meals, salads, smoothies.

Cons:

Calorie-dense: They’re high in fats (even though healthy fats), so portions matter to avoid excess calorie intake.
Phytic acid: Like many seeds, pumpkin seeds contain phytic acid, which can reduce mineral absorption when consumed in very large quantities.
Digestive discomfort: For some people, especially if shells are eaten or large amounts consumed, seeds may cause bloating, gas or slower digestion.
Potential hormonal/phytoestrogen effects: Although generally mild, because seeds contain phytonutrients some authorities caution moderation in individuals with hormone-sensitive conditions.

Can dogs eat pumpkin seeds?

Yes. In moderate amounts, plain, unsalted pumpkin seeds can be safe for many dogs and are sometimes included in natural dog treat recipes.

However:

Avoid salted, flavored or heavily processed varieties (because of added sodium or seasonings).
Make sure seeds are shelled. (Removing tough shells reduces choking risk and digestive irritation.)
As with any new food for a pet, introduce in small amounts, and monitor for digestive upset.

If your dog has specific health issues (pancreatitis, fat-sensitive digestive issues, allergies, etc.), check with your veterinarian before offering seeds regularly.

Conclusion

The pumpkin seed is a delicious type of seed that has been enjoyed around the globe for thousands of years.
These seeds are a good source of protein and fiber, plus important vitamins and minerals like manganese, magnesium, phosphorus, copper, iron and zinc.
Thanks to their stellar nutrient content, some of the potential health benefits of pumpkin seeds include better blood sugar levels, improved heart health, enhanced sleep quality, decreased cancer growth and increased urinary function.
Although more research is needed, consuming them may also reduce symptoms associated with benign prostatic hyperplasia in men and decrease the chances of developing certain types of cancer, such as breast cancer.
There are plenty of options for how to roast pumpkin seeds, but you can also enjoy them raw or add them to salads, smoothies, cereals or desserts for a nutritious addition to any recipe.

Pumpkin Seeds Can Help Combat Diabetes, Heart Disease & Cancer Cells

What are pumpkin seeds?

Nutrition facts