WARNING!
This is an older article that may not reflect Dr. Mercola’s current view on this topic. Use our search engine to find Dr. Mercola’s latest position on any health topic.
In the culinary world, things can go by names that don't necessarily describe what they are. Rose hips are a good example. Other times, similar names are assigned to objects that are entirely different, making it hard to keep them straight. Such is the case with black cumin seed, which comes from a completely different plant from cumin and black cumin.
To make it worse, cumin seeds and caraway seeds (Carum carvi) look almost identical. Both are tiny and elongated with ridges along their length and pointed at each end. Shea Terra Organics explains that while cumin and black seed are different botanically, they and a few other seeds are often incorrectly referred to as black cumin:
"In Indian cooking, there are two types of cumin seeds, called jeera. There is the common cumin seed (cuminum cyminum), and then there is a darker, smaller one called kala jeera (bunium bulbocastanum) or black cumin. Cumin, the spice that gives many Mexican dishes their distinctive taste, is also used to make an essential oil.
Neither "cumin" nor "black cumin" is black seed. Black cumin IS NOT black seed and although plenty of products now erroneously label themselves as black cumin, the two should not be confused. Black cumin is actually from the plant bunium bulbocastanum, which is in the Apiaceae family. Black seed, which the sought after oil is made from, is actually nigella sativa and not related to cumin at all."1
The Common Cumin Seed (Cuminum Cyminum)
Also from the Apiaceae family, the wheat-colored cumin seed is closely related to carrots and parsley. Often finely ground, it's used in the Middle East, Latin America, Southeast Asia, and India for several traditional dishes, such as korma and spice blends for masala and curries, and in Europe for making pickles and savory pastries. You can also add cumin seeds to casseroles, salads, stir fries, salad dressings, and even to your coffee or tea.
• Cumin has served both kitchens and cultures for thousands of years — Having originated in Mediterranean regions, it's one of many ancient seeds used by the Romans as both a spice and a medicine. The Egyptians used it too, principally for preserving bodies prior to mummification. Interestingly, its use as a preservative is why cumin is a common ingredient for sausage and other meats.
• Cumin packs a nutrient-rich profile — Cumin contains high amounts of iron, as well as phytonutrients that include terpenes, phenols, flavonoids, alkaloids and antioxidants.2 Studies show it may be useful for weight loss and for improving insulin metabolism in overweight individuals3 and may decrease blood triglycerides.4
• It's linked to digestive health — Medicinally, people in East India still prepare cumin for use as a medicine by boiling the seeds in water for treating edema, heart disease, stomach trouble, vomiting and fever. One of the earliest medical uses was for digestive health in India, explaining its name, which translates to "that which aids digestion." Regency Spices notes other uses:
"It stimulates the appetite, as well as the stomach, biliary, and pancreatic secretion. At the same time, cumin soothes spasms and removes gases from the intestines. Cumin is superior in comforting carminative qualities to fennel or caraway."5
• Cuminaldehyde is a natural compound in cumin seeds — It gives them their nutty, peppery, lemony taste that's also somewhat bitter. Even alcohol and water extracts of this compound contain potent antioxidants. A 2015 laboratory study found that cuminaldehyde demonstrated antioxidant properties that researchers suggested may be relevant to neurodegenerative disease research. It may also aid in weight loss and prevent foodborne illnesses.6,7
• Research lists digestion as one of cuminaldehyde's benefits — It may help release digestive proteins in your mouth, stomach and small intestine,8 and may increase the production of bile in your liver, helping to digest fats.9 In another study, 57 study subjects with irritable bowel syndrome (IBS) who took cumin extract for two weeks reported statistically significant improved symptoms.10
Other Notes Pertaining to Cumin Varieties
The similarities between caraway and cumin seeds lead to some interesting flavor-tweaking in the marketplace, as the milder-flavored cumin seeds are sometimes used to dilute the stronger flavor of caraway seeds. Caraway seeds are smoother, slightly curved, and taste more bitter, with a fragrance reminiscent of mint or anise. Some studies link both seeds to anticancer properties.
While you could take cumin spices to get some of the potent nutrients and health benefits these spices provide, obtaining them from actual food is preferable. It's important to know, and encouraging as well, that it doesn't take much of these aromatic spices to get the benefits they offer.
Black Cumin (Bunium Bulbocastanum)
Healthline11 describes black cumin as an annual plant species in the Apiaceae family,12 native to northern Africa, southeastern Europe, and southern Asia. The plant is about 2 feet tall and has white flowers similar to Queen Anne's lace. Black cumin (Kala jeera) looks about the same, is slightly shorter, and has a dull, dark gray hue.
• Its flavor sets it apart from common cumin — Regency Spices notes that the taste is worlds apart compared to common cumin: much more bitter, harsher, and only for very specific dishes in western and northern Indian cuisine, none of which would be found on a normal restaurant menu.13
• Every part of the plant has a use — Its edible roots are said to taste like coconuts or chestnuts, and the leaves are used as herbs, but it's the seeds that are most highly prized medicinally (although scientists say more tests are warranted). These uses include:
◦ Infection fighting — Research has shown antibacterial activity against Staphylococcus aureus in laboratory studies. S. aureus is the primary cause of skin and soft tissue infections and is often resistant to conventional antibiotics.14
◦ Diabetes — Because B. bulbocastanum has antioxidant and antiglycation capabilities, research shows it may be useful against complications from diabetes and aging.15
Black Seed (Nigella Sativa)
Black seed, from which black seed oil is derived, is an annual flowering plant in the Ranunculaceae family16 described in one study as "native to parts of Asia, the Middle East, and North Africa. The plant grows nearly 3 feet and has wispy foliage, small pale flowers, and fruit pods filled with seeds."17 Black seed is black as coal with a dull surface and is shaped like minuscule Brazil nuts.
Its bioactive compounds include thymoquinone, α-hederin, alkaloids, and flavonoids. Much of the research interest in N. sativa centers on thymoquinone, a bioactive compound studied for its anti-inflammatory, immune-supportive, and chemopreventive properties. Preclinical and early clinical studies have linked it to effects on cancer cell proliferation,18 cognitive function in elderly subjects,19,20 and allergic inflammatory responses.21 However, there's an important caveat to keep in mind before reaching for the oil itself.
An Important Caveat Regarding Black Cumin Seed
While black cumin seed has been historically valued for its health-supportive properties, especially due to the compound thymoquinone, it's important to note that it contains a high concentration of linoleic acid (LA). Its oil is typically between 50% and 62% LA by weight. Due to a deeper understanding of LA's long-term effects, I've changed my stance on the use of black cumin seed and its essential oil.
LA is a polyunsaturated omega-6 fat that, when consumed in excess, contributes to mitochondrial dysfunction, oxidative stress, and long-term metabolic damage. A single teaspoon of black cumin seed oil delivers approximately 2.5 grams of LA. Standard recommended doses of 1 to 3 teaspoons per day can significantly raise your total LA intake, adding to levels that are already excessive in the typical modern diet.
While thymoquinone remains a beneficial compound, it makes up less than 1% of the oil, meaning you'd need to consume large quantities of high-LA oil to obtain therapeutic amounts. For those seeking the benefits of thymoquinone without the risks associated with high LA intake, standardized thymoquinone extracts (e.g., 5%, 10%, or 20%) offer a better option than black cumin seed itself. These provide the active compound in meaningful doses without contributing to your metabolic burden.
Frequently Asked Questions About Cumin, Black Cumin, and Black Seed
Q: What's the difference between cumin, black cumin, and black seed?
A: They come from three entirely different plants. Cumin (Cuminum cyminum) is the common wheat-colored spice used in Mexican and Indian cooking. Black cumin (Bunium bulbocastanum), also called kala jeera, is a darker, more bitter seed used in specific northern and western Indian dishes. Black seed (Nigella sativa) is unrelated to either — it's the plant from which black seed oil is derived, and it belongs to a completely different botanical family.
Q: What are the health benefits of common cumin?
A: Cumin is rich in iron, terpenes, phenols, flavonoids, and antioxidants. Research links it to improved digestion, weight management, better insulin metabolism in overweight individuals, and lower blood triglycerides. Its active compound, cuminaldehyde, also has antioxidant properties that may be relevant to neurodegenerative disease research.
Q: How can I use cumin and black cumin in cooking?
A: Cumin seeds can be added to casseroles, salads, stir fries, salad dressings, baked goods, and even coffee or tea. Ground cumin is a staple in curries, masala blends, korma, pickles, and savory pastries. Black cumin (kala jeera) has a much more bitter, intense flavor and is reserved for specific northern and western Indian dishes — a little goes a long way.
Q: Why is the linoleic acid content in black seed oil a concern?
A: Black seed oil is 50% to 62% linoleic acid (LA) by weight. LA is a polyunsaturated omega-6 fat that, when consumed in excess, contributes to mitochondrial dysfunction, oxidative stress, and long-term metabolic damage.
Q: What's the best way to get the benefits of thymoquinone without the LA?
A: Standardized thymoquinone extracts — available in concentrations of 5%, 10%, or 20% — deliver the active compound in meaningful doses without the metabolic burden of the oil. These are the recommended alternatives for anyone seeking thymoquinone's researched benefits.