Inuit traditionally get vitamin C from animal foods, particularly organ meats, whale skin, and raw or frozen meat from marine mammals and caribou. In an environment where fruits and vegetables are scarce for most of the year, this animal-based approach provided just enough of the vitamin to prevent scurvy, the disease caused by severe vitamin C deficiency.
Animal Foods as the Primary Source
The traditional Inuit diet is built around seal, walrus, whale, caribou, and Arctic fish. While most people associate vitamin C with citrus fruits, animal tissues contain it too, just in much smaller amounts. Seal meat, for example, provides roughly 2 mg of vitamin C per 100 grams. That’s a tiny fraction of what you’d get from an orange, but when you’re eating a kilogram or more of meat daily, as traditional Inuit diets often involved, the numbers add up.
Certain parts of the animal are far richer in vitamin C than muscle meat. Organ meats like liver, kidneys, and adrenal glands concentrate the vitamin at much higher levels. Whale skin, known as muktuk, has long been recognized as one of the most important vitamin C sources in the Arctic diet. Muktuk from beluga and bowhead whales was eaten raw or fermented, both methods that preserve the vitamin content far better than cooking.
Why Raw and Frozen Preparation Matters
How Inuit prepared their food was just as important as what they ate. Cooking destroys more than 50% of the vitamin C present in meat. Traditional Inuit food preparation frequently avoided this loss entirely. Meat and organs were eaten raw, frozen, dried, or fermented rather than boiled or roasted. Frozen raw fish and meat, sliced thin and eaten immediately, retained their full vitamin C content.
This is a critical detail that separates the traditional Inuit diet from other meat-heavy diets around the world. European sailors eating salted, cooked, and preserved meat on long voyages famously developed scurvy. Inuit eating fresh, raw animal foods from the same types of animals did not. The difference wasn’t the food itself so much as the preparation. A reanalysis of nutritional data from East Greenland in the 1930s found that roughly half of all vitamin C in the traditional diet came from animal foods, and that cooking cut those values by about half. Eating raw preserved the slim but sufficient margin that kept scurvy away.
How Much They Actually Needed
Modern dietary guidelines recommend about 90 mg of vitamin C per day for men and 75 mg for women. But those numbers are set for optimal health, not bare survival. Scurvy can be prevented with as little as 10 mg per day. That’s the threshold that mattered for traditional Inuit populations.
Reaching 10 mg daily from seal meat alone would require eating at least 1 kg of raw meat per day, based on the roughly 2 mg per 100 grams found in seal. Traditional diets easily hit that volume. Combined with organ meats, whale skin, and occasional plant foods, total intake likely sat somewhere above the scurvy threshold but well below what a fruit-rich diet provides. The Inuit weren’t getting generous amounts of vitamin C. They were getting just enough, and their food practices were precisely calibrated to preserve every milligram.
Seasonal Plants Filled Some Gaps
Despite the popular image of a purely meat-based diet, Inuit did eat plant foods when available. During the brief Arctic summer, berries like cloudberries, crowberries, and blueberries provided a significant vitamin C boost. Cloudberries are particularly rich in the vitamin. Seaweed and kelp, gathered along coastlines, also contributed. Some communities preserved berries in seal oil to extend their availability into colder months.
These plant sources were seasonal and geographically variable. Communities in the high Arctic had far less access to them than groups living in sub-Arctic regions. But where available, they supplemented the animal-based vitamin C and provided a buffer during times when fresh meat was harder to come by.
A Low-Carb Diet Changes the Equation
There’s another factor that likely worked in the Inuit’s favor. Vitamin C and glucose (sugar) compete for the same transport pathways into cells. On a very low-carbohydrate diet like the traditional Inuit diet, less glucose circulates in the blood, which may allow the body to absorb and retain vitamin C more efficiently. In other words, a person eating almost no carbohydrates might need less vitamin C than someone on a high-carb Western diet to achieve the same biological effect.
This hasn’t been definitively proven in clinical trials, but it’s a widely discussed hypothesis that helps explain why Inuit thrived on vitamin C intakes that would concern a modern nutritionist. Their metabolic context, shaped by a high-fat, high-protein, very low-carbohydrate diet, may have stretched every milligram further than it would go in a body running on bread and sugar.
What Changed With Western Diets
When processed Western foods began replacing traditional foods in Arctic communities during the 20th century, the nutritional balance shifted. Cooked, canned, and shelf-stable foods replaced raw organ meats and muktuk. Flour, sugar, and processed starches introduced carbohydrates that may have increased vitamin C requirements while simultaneously removing the traditional sources that provided it. Reports of vitamin C deficiency and related health problems in Arctic communities rose in parallel with dietary Westernization, reinforcing how precisely the traditional diet had been meeting this need all along.