Hemp Hearts Nutrition Facts and Health Benefits

Hemp hearts, annotated

Verywell / Alexandra Shytsman 

Hemp hearts are the soft inner part of hemp seeds after removing the outer shell. The tiny cream and green-colored seeds are sometimes called shelled or hulled hemp seeds.

Hemp hearts come from the Cannabis sativa L. plant. But unlike some other species of the cannabis plant, hemp hearts have nonmedicinal levels (less than 0.3%) of the psychoactive compound THC.

The plant originates from Central Asia, and humans have used and enjoyed the hemp fibers and seeds for thousands of years. Today, hemp hearts can be found worldwide. They’re loved for their versatility, nutty flavor, and nutritional benefits.

Hemp Heart Nutrition Facts

The following nutrition information is provided by the USDA for 3 tablespoons (30g) of hulled, hemp seed.

  • Calories: 166
  • Fat: 14.6g
  • Sodium: 1.5mg
  • Carbohydrates: 2.6g
  • Fiber: 1.2g
  • Sugars: 0.5g
  • Protein: 9.5g
  • Magnesium: 210 mg
  • Potassium: 360 mg

Carbs

A single serving of hemp hearts is relatively high in calories but low in carbohydrates. A serving of hemp heart (3 tablespoons) has 166 calories but just 2.6 grams of carbohydrates. Nearly half of the carbs (about 1.2 grams) come from fiber. Only a half gram of carbs comes from sugar and the rest from starch.

Hemp hearts are a low glycemic food with the glycemic load of a single 3-tablespoon serving estimated to be 0.

Fats

Hemp hearts are filled with healthy fats. A serving of 3 tablespoons has almost 15 grams of fat, of which 1.4 grams are saturated, 1.6 grams are monounsaturated, and 11.4 grams are polyunsaturated (omega-3 and omega-6 fatty acids). That’s more good fats than in a similar chia or flax seeds serving. Since hemp hearts are plant-based, they are also cholesterol-free.

Protein

These little seeds pack a huge plant-based protein punch. A serving of 3 tablespoons has nearly 10 grams of protein, about double what you’ll find in a similar serving of flax or chia seeds (about 5 grams each). Their protein content makes them a common ingredient in protein bars and plant-based protein powders.

Hemp seeds also contain all nine essential amino acids, which are well-digested, especially for a plant-based protein.

In general, animal sources such as eggs, milk, and whey have a protein digestibility-corrected amino acid score (PDCAA) of 1.00, which means they’re well-digested. Plant protein sources typically fall below this. Soy leads the plant category with a score close to 1.00, followed by beans, pulses, legumes (score of 0.6 to 0.7), and grains and nuts (0.4 to 0.5). Hemp hearts have a PDCAA score of 0.5 to 0.62.

Vitamins and Minerals

Not only are hemp hearts loaded with healthy fats and proteins, but they’re also packed with nutrients.

Hemp is an excellent source of magnesium, providing about 210mg or about 50% of your daily needs. A serving of seeds also has 13% of the daily iron requirements for adults (2.4mg). Hemp hearts are also a good source of zinc, providing about 3mg per serving or about 20% of your daily needs.

Calories

Three tablespoons of hemp heart contain 166 calories. A majority of those calories come from healthy fats. The remaining calories come from protein, with a small number of carbohydrate calories.

Health Benefits

By including hemp seeds in your diet, you may take advantage of specific health benefits. Many research studies investigating hemp's benefits have been performed on animals. More research on humans is needed.

Improved Heart Health

Like other seeds (and nuts), hemp seeds are heart-healthy. Studies have shown they are high in both omega-3 fatty and omega-6 fatty acids. A healthy omega-3 to omega-6 intake is crucial for preventing or reducing many diseases, including cardiovascular disease.

Authors of one research review concluded that there is enough evidence to support the hypothesis that hemp seeds can potentially influence heart disease beneficially. Still, they added that more research is needed.

Reduced Risk of Type 2 Diabetes

You'll get a healthy dose of magnesium when consuming hemp seeds. The body needs magnesium to maintain healthy blood sugar levels. According to the National Institutes of Health, magnesium helps the body break down sugars and might help reduce the risk of insulin resistance—a condition that can lead to diabetes.

Stronger Bones

Magnesium also helps your body to build stronger bones. The NIH reports that people with higher intakes of magnesium have a higher bone mineral density, essential in reducing the risk of bone fractures and osteoporosis. And studies have shown that a proper level of magnesium in the body is important for maintaining healthy bones.

Constipation Relief

Hemp seeds may provide some relief to those with constipation due to the fiber they provide. Researchers have found that increasing your fiber intake helps to increase stool frequency in patients with constipation.

Preliminary research has also found that hemp seeds may help with constipation. One animal study found that consuming hemp seed soft capsules helped relieve constipation compared to the control group. However, more research needs to be conducted to understand the full benefit in humans.

Improved Cognitive Function

Another recent preliminary animal study was conducted on the potential benefit of hemp seeds on memory and neuroinflammation issues. Researchers found that the hemp seed extract prevented learning and spatial memory damage from inflammation and improved damage from the induced inflammation in the hippocampus.

More studies must be conducted to see if this benefit extends to humans.

Allergies

Allergic reactions to Cannabis sativa have been reported, although many studies investigate the part of the plant used for marijuana use (not hemp seeds). There have been reports of sore throat, nasal congestion, rhinitis, pharyngitis, wheezing, and other problems, including anaphylactic responses.

Recent reports of allergy to hemp seed are lacking. But at least one older study was published indicating that the condition is possible. Newer studies don't have much more information other than anticipating more cases of allergy and increased research, as products related to Cannabis sativa are used more frequently.

Adverse Effects

When consumed as a food, hemp seed is generally recognized as safe (GRAS) by the FDA. Many people wonder if they will get high from consuming hemp seeds. But that is not likely to happen. While marijuana and hemp seeds are related (they come from the same cannabis plant family), they are very different.

Hemp seeds don't naturally contain significant tetrahydrocannabinol (THC), the psychoactive component. Food-grade strains of hemp must contain less than 0.3% THC by weight. But studies have noted that they may not entirely be free of this compound.

A study conducted in Canada found variations in THC levels in hemp seed products, with some evaluated brands containing higher amounts than the legal threshold. Researchers suggested that the higher levels may be due to contamination during processing.

If you take certain medications, including estrogen, ACE inhibitors, or antihypertensive drugs, speak to your healthcare providers before consuming hemp seeds.

Hemp seeds are naturally gluten-free but can be subject to cross-contamination if processed in a facility that also processes gluten-containing grains. So if you adhere to a gluten-free diet, look for certified gluten-free brands.

Varieties

The common varieties of hemp hearts are organic and non-organic, but you’ll often find other hemp seed derivatives, including protein powder, soft gel capsules, oil, and hemp meal.

Many people wonder how hemp seeds compare to other common seeds like flax and chia. These seeds—chia, flax, and hemp—are excellent plant protein and fiber sources. They do vary when it comes to their nutritional offerings. Hemp hearts have 10 grams of protein per serving, while chia and flax have only 5 grams per serving.

Additionally, hemp hearts have more omega fatty acids—12 grams per serving—than flax and chia seeds, with 9 and 7 grams, respectively. Hemp seeds are also unique in that they contain gamma-linolenic acid (GLA), an anti-inflammatory omega fatty acid; flax and chia seeds do not.

When It’s Best

Hemp seeds are available year-round in many natural food stores. But hemp is often harvested in the fall.

Hemp hearts are typically sold in zip-up packages. Be sure to note the expiration date, as hemp hearts can go rancid.

Storage and Food Safety

Hemp seeds can spoil fairly quickly. But when stored properly, a package of hemp hearts can last a year. Packages of shelled hemp seeds should be stored in a cool, dry place or at cooler temperatures. The best way to prevent spoilage is to store hemp seeds in a sealed container in the refrigerator. When stored in a pantry, they will only last 3 to 4 months.

You can also store seeds in freezer-safe bags and store them in the freezer. You'll know hemp hearts have gone bad when they smell sour or bitter.

How to Prepare

You can use hemp hearts to make many kitchen staples. For example, you can make hemp milk by blending hemp hearts with water, then straining them. Ground seeds can be used to make flour. Or you can use them in the form of vegan protein powder. Some people extract hemp oil from the seeds and used it for dressings and sauces.

Hemp hearts are versatile so that they can be used in a range of dishes, from sweet to savory. They help provide texture, a little crunch, and a subtle, nutty flavor.

Consider these simple ways to use hemp seeds, hemp milk, or hemp oil:

  • Blend a smoothie with berries, milk, and a splash of maple syrup. Top the smoothie with hemp seeds or add them right in before blending.
  • Use hemp milk to make other smoothies with nutritious ingredients such as peanut butter, bananas, oats, or avocado.
  • Use hemp milk to make your morning latte.
  • Use hemp seeds to make a pie crust. First, place them in a food processor to get the right consistency, then press them into a pie pan.
  • Add hemp seeds to pesto.
  • Make a citrusy salad dressing with hemp oil, fresh lemon juice, lemon zest, salt, pepper, and minced garlic.
  • When making a yogurt parfait, sprinkle in hemp hearts when adding the layers of fruit (in between the layers of yogurt). Then add a pinch or two of hemp hearts to top off.
  • Toast hemp seeds and use them to coat fish or chicken before baking, or sprinkle them on top of avocado toast.
  • Make energy bites with hemp hearts to get you through the afternoon slump. Add 1/4 cup of hemp protein powder to your favorite snack bar recipe to add 14 grams of protein.
  • Give your granola an upgrade by adding hemp seeds. Making your own granola at home allows you to control what gets added.

Use hemp hearts anytime you would use its similar seed counterparts, like chia seed or flax seed. They’re a great protein-packed addition that can be sprinkled atop many dishes or included in a recipe as an ingredient.

11 Sources
Verywell Fit uses only high-quality sources, including peer-reviewed studies, to support the facts within our articles. Read our editorial process to learn more about how we fact-check and keep our content accurate, reliable, and trustworthy.
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Additional Reading

By Kelly Plowe, MS, RD
Kelly is a dietitian nutritionist with more than 10 years of experience in food and health communications. She specializes in intuitive eating.