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How Northern Cultures Thrived Without Sunlight: Lessons from Iceland
From the moment you arrive in Iceland, it’s clear that cod is more than just a fish, it’s part of the national identity. A large sign in the Keflavík airport proudly reads, “In Cod We Trust.” Turn over a 1 króna coin and you’ll find a beautifully detailed cod etched into its surface. This presence carries into everyday life: gas stations sell bags of dried cod much like beef jerky, and hotel breakfast buffets often include a bottle of cod liver oil, complete with small glasses for a daily serving.
This close relationship with cod and its oil offers an important clue into how ancient Icelanders and other northern cultures were able to maintain their vitality through long, dark winters with very little sunlight. This post explores the history behind that tradition, the ancestral methods used to prepare cod liver oil, and why it continues to be valued today.
A Land Shaped by the Sea
For Icelanders, cod has long been more than a food source. It has shaped their economy, culture, and daily nourishment. Fishing remains a cornerstone of the nation, with marine products accounting for a significant portion of Iceland’s exports. [1] For the island’s earliest settlers, this connection to the sea wasn’t just meaningful, it was essential.
The rugged landscape and cold climate made farming difficult, while sparse vegetation offered few edible plants. Land-based animals were also limited, leaving early communities with few dependable food sources on shore. The ocean, however, provided abundance. Fish and other marine life offered a steady and reliable source of sustenance. Over time, this reliance on the sea not only supported survival, but also deeply influenced Icelandic traditions and ways of life.
Fermented Cod Liver Oil: The Difference Is in the Tradition
This connection to the sea came to life for us during a conversation with our ice cave tour guide, Vigfus Asbjornsson. A cod fisherman during the summer months, Vigfus lives in a small fishing village on Iceland’s east coast and traces his ancestry back to the island’s original settlers. As we traveled through the rugged landscape, he shared a piece of his heritage that has been passed down for generations.
“Each home in the village had a barrel out front where they would place the cod livers,” Vigfus told us. “The oil would separate and rise to the top and there would be a ladle with the barrel so you could take a drink of the oil,” he explained. Traditional Icelanders didn’t just eat cod, they found a careful way to preserve its nourishment. That method was fermentation.
He also shared that children in Iceland are taught from a young age that cod liver oil helps keep them strong, adding, “They say you could always tell where the strongest men in the village lived based on how big of a barrel they had outside of their home.”
Vigfus reflected that, in his view, “the old ways of doing things are often the best ways.” We couldn’t agree more. Fermentation is a gentle, natural process that honors the delicate, naturally occurring nutrients within the oil and helps preserve its inherent qualities. Rooted in tradition and respect for nature, the process itself truly makes the difference.
Why Was Fermented Cod Liver Oil So Essential?
One of the most persistent challenges for Icelanders has always been limited sunlight for much of the year. Long winters and low sun angles mean the body’s natural processes are less supported. Fermented cod liver oil offered early settlers a reliable, traditionally preserved source of nourishment during these darker months.
The nutrients found in this traditional food aligned well with the needs of a northern lifestyle. Vitamin D plays an important role in supporting normal bone structure and calcium balance which is especially valuable in a physically demanding environment. [2] Vitamin A is associated with maintaining vision in low-light conditions and supporting immune function, particularly during winter when people spend more time indoors. [3]
Cod liver oil also naturally contains Omega fatty acids, including EPA and DHA. These fats are known to support a healthy inflammatory response, cognitive function, and emotional balance. [4] Together, these nutrients provided steady nutritional support when sunlight and fresh foods were scarce, helping sustain Icelanders through the unique challenges of life in the far North.
Honoring Tradition for Modern Wellness
Adding Fermented Cod Liver Oil to your daily habits can easily become part of your family's winter wellness routine. Here are practical ways to incorporate this oil into seasonal foods:
What began as a curious observation about the cod fish on a trip to Iceland, grew into a deeper appreciation for Iceland’s ancestral wisdom. That phrase “In Cod We Trust” took on new meaning. It’s not just a clever slogan, but a reflection of a culture that learned to rely on the sea. The ability of Icelanders to flourish in such a demanding environment was no accident, it was shaped by generations of knowledge, cultural practices, and a deep respect for nature’s provisions. Fermented cod liver oil stands as one meaningful expression of that wisdom.
These practices remind us that wellness has long been rooted in whole foods, thoughtful preparation, and living in rhythm with the natural world. By looking to these time-tested ways of nourishment, we can find inspiration for supporting our own well-being today.
If you’re ever in Iceland, you can explore the ice caves with Vigfus at Glacier Travel Adventures.
- Iceland Responsible Fisheries for the benefit of future generations | Export Statistics
- Vitamin D and Bone Health; Potential Mechanisms
- Role of Vitamin A in the Immune System
- Omega-3 Fatty Acids EPA and DHA: Health Benefits Throughout Life
