Friday, August 29, 2025

Polaris of Enlightenment

Sauerkraut may help your stomach

Published 11 May 2025
– By Editorial Staff
2 minute read

Sauerkraut may protect the intestinal lining from inflammation, according to an American study. During fermentation, the nutritional content of cabbage changes – including an increase in levels of lactic acid, amino acids, and other beneficial substances that are formed during the breakdown and can promote gut health.

Fermentation is a natural process where microorganisms like lactic acid bacteria and yeast break down sugars in food. This often results in the conversion of sugar into lactic acid or alcohol. The process not only helps preserve the food – it also produces probiotics, meaning live bacteria that are beneficial for the gut.

Fermented foods have been eaten for thousands of years around the world. For example, eating fermented vegetables makes the nutrients in the food easier for the body to absorb, and some studies show that vitamin levels can actually increase. There are also studies that suggest fermented foods can have positive effects on health, particularly for digestion and the immune system.

Sauerkraut better than raw cabbage

Researchers at the University of California Davis in the USA tested whether the nutrients in sauerkraut could help protect intestinal cells from inflammation-related damage. The study compared sauerkraut, raw cabbage, and the brine left over after the cabbage fermentation process.

The experiments were conducted on an artificial intestinal wall exposed to inflammation by adding so-called cytokines – which are known to damage the intestinal lining. These can be activated in the gut, for example, by consuming too much ultra-processed food or too much sugar or salt.

Fermentation increases beneficial substances

The results showed that sauerkraut can protect the intestinal lining from inflammation caused by cytokines. Raw cabbage and the brine, however, did not help protect the gut. It didn’t matter whether the sauerkraut was store-bought or homemade.

Chemical analyses show that fermentation changes the nutritional profile of cabbage and increases the amount of beneficial metabolites such as lactic acid, amino acids, and plant compounds, which in turn are linked to gut health. These changes may explain why fermented foods are often associated with digestive benefits.

– Some of the metabolites we find in the sauerkraut are the same kind of metabolites we’re finding to be made by the gut microbiome, so that gives us a little more confidence that this connection we found between the metabolites in sauerkraut and good gut health makes sense, says Professor Maria Marco in a press release.

The researchers have found hundreds of different metabolites that are formed during fermentation and that they are now working to determine which ones play the biggest role in supporting long-term gut health. The next step in the research is to conduct studies in humans to see if the gut-protective metabolites found in sauerkraut can have the same positive effects when included in the daily diet, as was shown in the lab.

A little bit of sauerkraut could go a long way, she says. We should be thinking about including these fermented foods in our regular diets and not just as a side on our hot dogs.

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Memory problems increase among Nordic children

Published 27 August 2025
– By Editorial Staff
Memory-related medical visits have tripled in a short time among children aged 5-14 in Sweden.
2 minute read

More children and young people are seeking medical care for memory problems in both Sweden and Norway. The Swedish Radiation Protection Foundation believes the increase may be linked to radiation exposure, which has also increased during the same period.

In Norway, there has been an increase in recent years in the number of people seeking medical care for memory problems, not only among adults but also among children. Between 2019 and 2024, for example, the number of doctor visits related to memory problems more than doubled, from 41,722 doctor visits to 98,910 doctor visits in 2024. Among children aged 5-14, visits had nearly tripled.

I have never seen such a dramatic increase in these figures before, says Richard Aubrey White, researcher and statistician at the Norwegian Institute of Public Health (FHI), to Norwegian state broadcaster NRK.

In Sweden too, the number of doctor visits regarding memory problems has increased, both among children and adults. Memory problems, which can be classified as mild cognitive impairment, is a diagnosis found under diagnostic code R41. In 2011, 577 children were registered with diagnosis R41 as the primary diagnosis; by 2024, the number had increased to 5,975.

Microwave radiation

The Swedish Radiation Protection Foundation believes the increase may be due to increased exposure to microwave radiation among people, pointing out that repeated research has shown, for example, that radiation has a harmful effect on memory.

Repeated scientific studies have also shown that people exposed to elevated levels of this radiation have an increased occurrence of various symptoms, called microwave syndrome, where impaired memory is one of the most common symptoms“, writes the Swedish Radiation Protection Foundation.

Cell towers associated with worse memory

Even in case studies examining the health effects of 5G, impaired memory tends to be one of the most commonly reported effects. Reports of impaired memory, concentration difficulties, and headaches are also common when living near cell towers.

The Swedish Radiation Protection Foundation notes that radiation has increased dramatically during the same period as the increase in doctor visits for memory problems has occurred. At the same time, mobile phones have begun to be used more extensively by both children and adults during the same period.

The increased memory problems, both among children and adults, are thus an expected effect resulting from the increase in people’s exposure to microwave radiation”.

Colorectal cancer affects more young Swedes

Published 23 August 2025
– By Editorial Staff
The study also shows that mortality has increased among both younger and older patients for up to ten years after cancer diagnosis.
2 minute read

Colorectal cancer is increasing among young people in Sweden, according to research from the Karolinska Institute. Researchers suggest that lifestyle factors, such as sedentary behavior and obesity, may be the cause.

In the study, which was published in Annals of Oncology, researchers examined over 135,000 Swedish patients who had colorectal cancer between 1993 and 2019.

The results show that the number of younger people under 50 who develop this form of cancer has increased over the past three decades. For rectal cancer, the number of new cases among younger people has increased by 2.04 percent per year, and for left-sided and right-sided colon cancer, the increase is 2.41 and 2.64 percent per year respectively. Overall, the disease has become two to three times more common among younger people.

Detected later in younger patients

Younger patients also more often had metastatic cancer compared to older patients, suggesting they had lived with symptoms longer before the cancer was discovered. Researchers emphasize that it’s important for both the public and healthcare professionals to know that this type of cancer can also affect younger people. This is particularly important since the chance of curing cancer increases with early detection.

The study also shows that mortality has increased among both younger and older patients up to ten years after cancer diagnosis.

This is remarkable, since patients are often considered cured after such a long time. Our results challenge that view and underscore the need for more research into why this is happening, as well as long-term follow-up and support for both young and older patients, says Cecilia Radkiewicz, researcher at the Department of Molecular Medicine and Surgery at the Karolinska Institute in Stockholm.

Lifestyle may be the cause

It’s unclear what actually lies behind the increase in colorectal cancer among young people, but researchers believe it doesn’t appear to be driven by traditional risk factors such as inflammatory bowel disease or heredity. Instead, the results suggest that lifestyle factors may be decisive.

Childhood obesity, sedentary lifestyle, and antibiotic use have been highlighted as contributing factors, although the underlying biological mechanisms remain unclear, says Radkiewicz.

Just a few puffs are enough – how quickly vaping damages the lungs

Published 21 August 2025
– By Editorial Staff
Researchers have for the first time been able to demonstrate a direct link between inhaled nicotine from e-cigarettes and inflammatory markers in the blood.
2 minute read

Just a few puffs of an e-cigarette, or vape, containing nicotine can trigger inflammation in the lungs, according to research from Uppsala University in Sweden.

The researchers, who received funding from the Swedish Heart-Lung Foundation, tested 22 healthy individuals on two different occasions. The participants then smoked e-cigarettes both with and without nicotine for half an hour each.

When the researchers analyzed the blood samples, they found that participants exposed to nicotine-containing e-cigarettes showed elevated levels of inflammatory markers in their blood. According to the researchers, this could mean that just a few inhalations are enough to trigger an inflammatory reaction in lung tissue.

The results are alarming, as they clearly show that e-cigarettes with nicotine are not a harmless alternative to cigarettes. We have long worked to spread scientifically-based knowledge about nicotine’s health effects, and this research strengthens our conviction that tobacco and new nicotine products should be treated equally under the law, says Kristina Sparreljung, Secretary General of the Swedish Heart-Lung Foundation, in a press release.

For the first time, researchers have been able to demonstrate a direct link between inhaled nicotine and specific inflammation markers in the blood that are connected to the lungs. The researchers believe the absorption rate is particularly concerning, as the body absorbs nicotine faster than with nicotine patches, for example.

Our results are in line with previous studies where nicotine from e-cigarettes has been shown to affect blood vessels by increasing levels of vascular damage markers in the blood. It’s remarkable that even single occasions can produce biological effects. In the long term, this could contribute to the development of both lung diseases and cardiovascular disease, says Fariborz Mobarrez, lecturer and researcher at the Department of Medical Sciences at Uppsala University.

Obesity the most common risk factor for heart attack among Swedes

Published 20 August 2025
– By Editorial Staff
Women who suffer heart attacks often have more risk factors and a worse prognosis than men.
2 minute read

Obesity has overtaken smoking as the primary cause of heart attack among young adults in Sweden, a new study shows.

In the study, which was published in European Heart Journal – Quality of Care and Clinical Outcomes, researchers followed 44,254 people aged 18–59 after they suffered their first heart attack. The study is a registry-based study and was conducted with support from the Swedish Heart-Lung Foundation.

The results show that three out of four young adults who suffered a heart attack had at least one known risk factor – most commonly high blood pressure, diabetes, smoking, or obesity. Furthermore, the study shows that obesity has overtaken smoking as the most common risk factor in this age group. The reason is that the number of smokers has decreased, but at the same time the proportion suffering from obesity has increased markedly. For example, one in four suffered from obesity in 2006, and more than one in three in 2021.

It is concerning that the proportion of people with obesity has overtaken the proportion of smokers as the most common risk factor among young adults. But it also shows that we can do much to prevent heart attacks by finding and treating risk factors in time, says Moa Simonsson, researcher and senior physician in cardiology at Karolinska University Hospital in Stockholm, in a press release.

Difference between men and women

Men run a greater risk of suffering a heart attack compared to women and are often affected earlier in life. At the same time, the study shows that women who suffer heart attacks often have more risk factors, but also that they have a worse prognosis after a heart attack.

It seems that women who have a heart attack need to have a heavier burden of risk factors than men to be affected. This shows that we need to understand more about women’s particular risks, such as complications during pregnancy, says Simonsson.

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