Hemp milk is a nutritious plant-based option that delivers healthy fats, moderate protein, and almost no carbohydrates. A cup of unsweetened hemp milk contains about 60 calories, 4.5 grams of fat (mostly polyunsaturated), 3 grams of protein, and zero carbohydrates. It’s not a nutritional powerhouse on par with soy milk or dairy, but it has real strengths that make it worth considering, especially if you’re avoiding common allergens or watching your carb intake.
What’s in a Cup of Hemp Milk
The nutritional profile of unsweetened hemp milk is lean and simple. Per cup, you’re getting roughly 60 calories, 3 grams of protein, 4.5 grams of fat, and no carbohydrates. Compare that to other popular alternatives: almond milk has fewer calories (30 to 40) but only 1 gram of protein. Oat milk packs 90 to 120 calories with about 15 grams of carbohydrates. Soy milk leads the plant-based category with 7 to 8 grams of protein per cup, comparable to dairy’s 8 grams.
Hemp milk sits in a middle ground. It won’t match dairy or soy for protein, but it outperforms almond and rice milk. And its near-zero carbohydrate count makes it one of the lowest-carb options available, which matters if you’re managing blood sugar or following a keto-style diet.
The Fat Profile Is the Real Selling Point
Most of the fat in hemp milk is polyunsaturated, including both omega-3 and omega-6 fatty acids. These are essential fats your body can’t produce on its own. Hemp seeds naturally contain them in a ratio that nutrition researchers consider favorable, roughly 3:1 omega-6 to omega-3. Most Western diets skew heavily toward omega-6 (sometimes 15:1 or higher), so hemp milk nudges that balance in a better direction.
These polyunsaturated fats play roles in reducing inflammation, supporting cardiovascular function, and maintaining healthy skin. The 4 to 6 grams of fat per cup aren’t excessive, and very little of it is saturated.
Protein Quality: Good but Not Complete
Hemp protein comes primarily from two proteins called edestin and albumin, both of which are easily digested. The essential amino acid content is actually higher than soy protein isolate in some analyses. However, hemp protein falls short in one key amino acid: lysine. It’s also lower in sulfur-containing amino acids. This means hemp protein on its own isn’t truly “complete” by the standard used for young children’s nutrition, though for adults eating a varied diet, this gap is easy to fill with other foods like beans, lentils, or grains throughout the day.
At 3 grams per cup, hemp milk isn’t going to be your primary protein source regardless. If protein is a priority, soy milk (7 to 8 grams) or dairy (8 grams) are better choices.
Fortification Matters More Than You Think
Unfortified hemp milk is notably low in calcium and vitamin B12. One analysis found unfortified hemp milk contained just 45 milligrams of calcium per liter, a fraction of what dairy provides (about 300 mg per cup). Vitamin B12 was not detected at all in unfortified samples, and vitamin D levels were minimal.
Most commercial brands add calcium carbonate or tricalcium phosphate, along with vitamins D and B12, to close these gaps. But fortification levels vary between brands, and there are currently no mandatory standards for plant-based milks in the U.S. or EU. Check the nutrition label: you want at least 20 to 30 percent of the daily value for calcium per serving. If you rely on hemp milk as your primary “milk,” choosing a well-fortified brand is essential to avoiding nutrient shortfalls, particularly for calcium, vitamin D, and B12.
A Strong Choice for Allergy-Prone Individuals
Hemp milk is free of dairy, soy, and gluten, making it appealing if you’re navigating multiple food sensitivities. Hemp seeds are not tree nuts, so they’re generally safe for people with nut allergies. However, recent research has identified potential cross-reactivity between hemp seed proteins and hazelnut. In lab tests, blood samples from hazelnut-sensitized individuals showed a 25 to 30 percent cross-reactive response to hemp seed storage proteins. The clinical significance of this isn’t fully established yet, but if you have a confirmed hazelnut allergy, it’s worth being cautious. Some interaction has also been observed with wheat and soy antibodies in preliminary testing.
True hemp seed allergies do exist but remain rare. Severe reactions like anaphylaxis from hemp seed ingestion have been documented only in isolated cases.
Will Hemp Milk Show Up on a Drug Test?
Hemp seeds don’t naturally contain THC, the psychoactive compound in marijuana. However, seeds can pick up trace amounts of THC and other cannabinoids during harvesting when they come into contact with other parts of the hemp plant. For most people drinking hemp milk, these trace levels are far too low to cause any psychoactive effect or concern.
Competitive athletes face a different calculus. A study examining 23 hemp food products found that 20 contained detectable cannabinoids, and when volunteers consumed them, roughly 28 percent of urine samples collected eight hours later would have triggered a positive result under anti-doping rules. The U.S. Anti-Doping Agency recommends athletes avoid all hemp products during competition periods, including hemp milk and hemp protein powders sold as regular grocery items. For non-athletes, casual hemp milk consumption poses no practical risk.
Environmental Footprint
Hemp is a relatively low-impact crop. It naturally resists many diseases, which means farmers use fewer herbicides and pesticides compared to other crops. Its water requirements fall below almonds (which need about 3.2 gallons of water per single nut) but above oat, soy, and pea plants. Across the board, all plant-based milks require far less land than dairy, which uses roughly nine times more land to produce equivalent quantities.
If environmental impact is a deciding factor, oat and soy milk have a slight edge on water use, but hemp milk is still a strong performer compared to almond or dairy.
How to Get the Most From Hemp Milk
Choose unsweetened varieties to keep calories and added sugars low. Flavored and sweetened versions can add 5 to 10 grams of sugar per serving, which erases one of hemp milk’s main advantages over oat milk. Look for brands fortified with calcium, vitamin D, and B12, especially if you’re using it daily. Shake the carton before pouring, since calcium fortification tends to settle at the bottom.
Hemp milk works well in smoothies, cereal, and coffee. It has a slightly nutty, earthy flavor that’s milder than soy but more noticeable than almond milk. Its thinner consistency can be a drawback in recipes that need creaminess, where oat milk or full-fat coconut milk perform better.