Friday, October 10, 2025

Polaris of Enlightenment

Crowberry – anonymous northern superberry

Published 21 July 2024
– By Editorial Staff
Crowberry wine is said to have been made in the Nordic countries as early as the 12th century.
5 minute read

This black berry may not be as tasty as blueberries, but it is just as healthy. With high levels of fiber, antioxidants, and vitamin C, the crowberry is a super berry in all its glory that is both widely eaten and used in folk medicine.

The crowberry is a black berry similar to the blueberry, but smaller, harder and with larger seeds. Its leaves are coniferous, making it easy to recognize and not to be confused with other plants. They are found in most parts of the country and are almost as common as blueberries, but unlike blueberries, crowberries do not stain hands and clothing. The berry can be picked from July until the first snow falls. Overripe berries can be picked in the spring.

Not food for crows

According to archaeologists, crowberries were one of the earliest plants to appear after the Ice Age. The oldest traces found in fecal remains are 10,000 years old and were found in Balltorp outside Gothenburg. In Sweden, however, there is a difference between where they have been eaten most. In the northern parts of the country, with a border at Gävle and Falun, crowberries are said to have been eaten a lot. But not so much in the southern parts. The reason may be that there are two different types of crowberries, a northern and a southern variety. The northern berries are said to be tastier, but it is difficult to tell them apart with the naked eye.

The name does not imply that it is a berry that the crow eats, but rather that it is something that the bear likes to eat along with blueberries. Historically, however, the crow was considered unlucky, and darker berries were often considered inedible, which may be the reason for the name “crowberry”. The crow also appears in the name of the berry in Swedish, kråkbär, Finnish variksenmarja, and German krähenbeere.

Although the crow may not eat the berries, other birds do. Because the berries do not spoil during the winter, they are an important food source for returning migratory birds. Smaller animals such as stoats also like to eat them.

The berries have been very important in Sami culture, where they were eaten in soups or with hot reindeer fat. It was also common to mix crowberries with milk or whey, according to Finnish national broadcaster Yle. According to a book on the Finnish Scots written by the late ethnographer Samuli Paulaharju, crowberries were the only berries that the Sami people gathered for the winter.

They were also widely eaten in Finland and Norway. In Norway, they may also be called “silence berries” or “comfort berries”, probably because they were a source of comfort when there was nothing else available for a dry throat while hiking in the forest, according to the Norwegian Helsemagasinet. The berries were also often used to make ink or paint for clothing or fishing nets.

Folk medicine

Crowberries have been used as a diuretic and laxative in folk medicine, where they have been called “pee berries” in Norway. Children are said to have been warned not to eat them in the evening because of the risk of bedwetting. They were also used to treat scurvy and mouth ulcers, which could be treated by gargling decoctions of the berries. According to Skogsskafferiet, a tea made from unripe green berries was used to treat kidney stones.

They have also been used to treat headaches, fever, and fatigue.

Health benefits

Along with blueberries, crowberries contain the highest levels of anthocyanin, an antioxidant and the substance that gives the berries their dark color. A 2008 Japanese study identified thirteen different anthocyanins in crowberries. Researchers analyzed the total anthocyanin content of crowberries, blueberries, and eight other common berries and found that crowberries had the highest levels.

They also contain flavonoids, which also act as antioxidants. Antioxidants can, for example, protect against oxidative stress caused by free radicals.

According to a Finnish study, crowberries grown in areas prone to early frost have higher levels of anthocyanins. They also contain more vitamin C than lingonberries.

Crowberries are also high in fiber, more than most imported fruits. The berries are also said to have anti-inflammatory and antibacterial properties.

Crowberry Uses

Crowberries can taste a bit rough, bitter and sour, but can be eaten fresh in the forest, they are perfect if you need some extra energy on a hike. However, they should taste better when pickled or juiced. They should also be good in jams or juices with other berries, such as currants. The leaves can be used to make tea. If you want to preserve the benefits of the berries a little longer, you can make unheated juice, as Anu Tossavainen does. She makes the juice without boiling it and sweetening it with honey instead of sugar.

– You can’t ruin your day if you start it with a glass of crowberry juice, she says, according to Yle.

You can also dry the berries and use them in porridge or a smoothie. You can also freeze the berries and use them later. Like lingonberries, you can also keep fresh berries in water in a jar in the fridge, where they will stay fresh longer.

Crowberry wine

It is said that crowberry wine has been made in Norway since the 12th century, during the reign of King Sverre Sigurdsson. It is said that German merchants imported so much wine to Norway that it became as cheap as beer, which also increased the number of drunks in the country. King Sverre found this problematic and told the Norwegians that it was the people’s duty to look after themselves and maintain public order, which the people listened to and the German merchants were no longer allowed to import wine. The king, who is said to have had a good knowledge of nature after growing up in the Faroe Islands, suggested that instead of importing German wine, they should make their own from crowberries. This is still the case today, and several Norwegian companies produce crowberry wine. Crowberries can also be used to flavor spirits.

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Study: Diet crucial against obesity – not activity level

Published 6 October 2025
– By Editorial Staff
The problem is not a sedentary lifestyle – but too much and the wrong kind of food, according to the researchers.
2 minute read

Sedentary and physically active people can burn almost the same amount of energy per day, shows a new American study. The researchers therefore argue that the fight against obesity must focus more on diet – and less on exercise.

In the study, published in the scientific journal PNAS, researchers compared data from 4,200 people from different continents with different lifestyles – including herding cultures in Siberia, hunter-gatherers in Tanzania, as well as people from both low-income and high-income countries. In total, they compared 34 different population groups.

The results show that total daily energy expenditure did not differ significantly between the different population groups. This means that, for example, a hunter-gatherer used the same amount of energy as an office worker in Sweden during a day.

Even when people live different lifestyles, once we account for the effects of body size, we do not see meaningful differences in the total number of calories people burn, says Amanda McGrosky at Elon University in the US, who is the lead author of the study, in a press release.

McGrosky points out that obesity is therefore primarily about increased calorie consumption, not decreased activity expenditure.

If you are worried about excess body fat, focus on calories in, not calories out, the researcher suggests.

Westerners eat too much

Obesity and overweight are growing health problems in the Western world, something often linked to the increasingly sedentary culture. However, this study suggests that sedentary behavior is not the biggest problem causing obesity, and McGrosky believes the study offers hope in the fight against obesity. Instead, one should look at diet and especially reduce the intake of ultra-processed foods and increase the proportion of healthy ones.

The researchers therefore suggest that it is not sedentary behavior that is the culprit in Western countries’ obesity epidemic, but rather that people simply eat too much and too unhealthily.

Exercise is still important

However, the researchers point out that this does not mean one should exclude exercise and movement, as it has a range of health-promoting benefits such as reduced risk of cardiovascular disease, premature death, and also improves mental health.

A key takeaway from the study is that increases in body fat that accompany changes in lifestyle are primarily linked to changes in energy intake, or diet. Physical activity is still very important for all-around health and should be considered complementary to diet, says McGrosky.

Fifteen minutes in the park can reduce anxiety

Published 26 September 2025
– By Editorial Staff
All types of green spaces in cities improve residents' mental health, but urban forests stand out – particularly when it comes to reducing depression and anxiety.
2 minute read

Just fifteen minutes in urban green spaces is enough to improve mental health, a study shows. The best approach is to sit or rest in the park for a while.

Today, approximately 55 percent of the world’s population lives in cities, according to the UN. This figure is expected to increase to nearly 70 percent by 2050. This means a greater absence of nature and also more health problems linked to city life, such as anxiety, which is more common among urban dwellers.

In a study by researchers at Stanford University in the US and Leiden University in the Netherlands, results from 449 published studies were compiled and 78 field experiments analyzed to examine how different types of urban green spaces affect 12 different aspects of mental health. Nearly 5,900 participants were included in total.

The results, published in Nature, show that all types of urban green spaces improved mental health, but urban forests stood out – particularly when it came to reducing depression and anxiety. And you didn’t need to spend particularly long to get a positive effect; less than fifteen minutes was enough. However, spending more than 45 minutes in nature provided greater benefits.

Our results show that even brief contact with nature can provide significant mental benefits, says Roy Remme from Leiden University, according to Medical Xpress. What’s more, longer nature exposure is linked to even greater reductions in stress and boosts in vitality.

Rest or sit

Young adults see even greater benefits, which is remarkable considering that most mental health problems begin before age 25. However, there was also a significant benefit for other age groups. Primarily, it was beneficial for mental health to sit or rest in the park or natural area, while moving around in nature increased energy and positivity.

Based on the results, the researchers emphasize the importance of protecting forests and parks in cities, but also promoting smaller parks and more street trees to improve residents’ access to nature. Furthermore, they point out that simpler changes, such as placing more windows facing greenery or organizing community programs with guided meditation, for example, can be cost-effective ways to promote public health.

Researchers: More people affected by meat allergy as ticks spread

Published 25 September 2025
– By Editorial Staff
Meat allergy can be triggered by tick bites – the immune reaction against alpha-gal in mammalian meat causes the symptoms.
2 minute read

Meat allergy is becoming increasingly common in Sweden following tick bites, researchers confirm. For those affected, it means a complete lifestyle change since there is no treatment – only complete abstinence from meat helps.

Karin Ottosson was struck by severe stomach problems after a tick bite. It took time to figure out what problem Karin had been affected by, she felt very ill and nothing seemed to help.

I was bedridden and tried to eat, but it just continued and continued, she tells Swedish media outlet TV4.

After several hospital visits and numerous investigations, the answer came: Karin had been affected by meat allergy. It is caused by an immune reaction to the substance alpha-gal, which is found in tick saliva and in meat from mammals. The symptoms can include, in addition to various stomach problems such as vomiting and diarrhea, rashes and even asthma reactions.

Researchers have seen a marked increase in meat allergy in connection with ticks spreading to new areas, and also becoming more active for larger parts of the year.

No treatment

Karin had to completely change her diet, but it is not entirely simple to avoid meat – even small amounts or hidden additives can trigger the allergy.

It can be anything from starting to itch, getting a rash, to becoming as ill as I was from the beginning. It’s impossible to predict, says Karin.

There is no treatment for meat allergy, and the only thing that works is to completely avoid meat.

Unfortunately, there is no treatment other than having to avoid mammalian meat and making sure not to get bitten by ticks, says Marianne van Hage, professor of clinical immunology.

Broccoli may protect against colorectal cancer

Published 15 September 2025
– By Editorial Staff
Delicious on the plate and delicious for your health.
2 minute read

People who eat more broccoli and cauliflower have a lower risk of colorectal cancer, according to a Chinese study. However, moderate amounts are sufficient to achieve the protective effect.

Colorectal cancer is the third most common form of cancer worldwide and is also the second leading cause of cancer-related deaths.

In Sweden, colorectal cancer has increased among young people over the past thirty years, and mortality from this form of cancer has increased among patients in all age groups for up to ten years after cancer diagnosis.

In the study, which was published in BMC Gastroenterology, researchers analyzed data from 17 previous studies, with a total of 639,539 participants, including 97,595 cases of colorectal cancer.

The purpose was to investigate whether higher vegetable intake corresponded to greater risk reduction for this form of cancer and, if so, the specific amounts at which this effect became significant.

The results showed that those who ate more cruciferous vegetables, such as broccoli, cabbage, cauliflower, or Brussels sprouts, had a 20 percent lower risk of colorectal cancer compared to those who ate less.

Photo: Polina Tankilevitch/Pexels

Glucosinolates

These vegetables contain many beneficial substances such as vitamins, fiber, and antioxidants. But what makes them extra special are compounds called glucosinolates. When you chew these vegetables, glucosinolates break down into other compounds called isothiocyanates – particularly one called sulforaphane.

These are the compounds that give the vegetables their strong, sometimes slightly bitter taste and smell. These are also the compounds believed to be cancer-preventive.

The researchers found that the greatest risk reduction was observed between 20 and 40 grams, but no significant improvement was seen above 40 grams per day.

The study was conducted at the Second Clinical Medical School of Inner Mongolia University for the Nationalities in Yakeshi, China.

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