Monday, June 23, 2025

Polaris of Enlightenment

Study: Kombucha tea can lower blood sugar levels

Published 15 October 2023
– By Editorial Staff
Kombucha is made with a so-called "Scoby", a type of mushroom.
2 minute read

Drinking kombucha tea may help lower blood sugar levels in individuals with type 2 diabetes, a new study suggests. After consuming the fermented beverage for four weeks, participants’ fasting blood sugar levels decreased to a healthy level.

Kombucha is a fermented tea made with the kombucha fungus, also known as Scoby (Symbiotic Culture of Bacteria and Yeast). The tea is rich in beneficial bacteria and is often considered a health drink. The drink is believed to have originated in northern China, mentioned as early as around 220 BC.

In a recent study, researchers wanted to investigate the beverage’s potential positive impact on individuals with type 2 diabetes, as previous studies have shown the drink can lower blood sugar levels. This is the first study examining kombucha’s effects on diabetic individuals, says one of the study’s co-authors, Dan Merenstein, a professor of family medicine at Georgetown University in Washington.

Some laboratory and rodent studies of kombucha have shown promise and one small study in people without diabetes showed kombucha lowered blood sugar, but to our knowledge this is the first clinical trial examining effects of kombucha in people with diabetes, he states.

Significant decrease

In the pilot study, published in Frontiers in Nutrition, a group of 12 individuals with type 2 diabetes consumed about 8 ounces of kombucha or a placebo drink daily. After a two-month period, the kombucha and placebo were swapped between groups to “wash out” the biological effects of the beverages. The participants then drank kombucha daily for another four weeks. None of the groups knew which drink they received during this period.

After the four weeks, the average fasting blood sugar levels decreased from 164 to 116 milligrams per deciliter, whereas the placebo drink did not yield any statistically significant reductions. According to the American Diabetes Association, pre-meal blood sugar levels should be around 70 to 130 mg/dl.

We were able to provide preliminary evidence that a common drink could have an effect on diabetes. We hope that a much larger trial, using the lessons we learned in this trial, could be undertaken to give a more definitive answer to the effectiveness of kombucha in reducing blood glucose levels, and hence prevent or help treat type 2 diabetes, says another co-author, Dr. Chagai Mendelson.

Beneficial microorganisms

The researchers also examined the composition of fermenting microorganisms in kombucha to determine which ingredients might be the most active. They found the drink primarily contained lactic acid bacteria, acetic acid bacteria, and a form of yeast known as Dekkera. Although the composition can vary depending on the drink and its maker, the researchers believe these bacteria are likely present in most kombucha beverages.

Type 2 diabetes is a growing public health concern in countries like Sweden and the USA. Many individuals are also in a so-called “pre-stage,” at risk of developing the disease. Therefore, the researchers believe this study holds promise for the future.

– Much more research is needed, but this is very promising, Professor Merenstein concludes.

Make Your Own Kombucha

To obtain a kombucha culture (Scoby) and a starter liquid, one can search in places like Facebook groups. Starter kits are also available for purchase online.

Ingredients

  • 2 liters of water
  • 1 1/2 tablespoons of black or green tea
  • 2 cups of granulated sugar
  • 2 cups of kombucha
  • 1 kombucha culture (Scoby)

Instructions

  1. Bring half of the water to a boil and add the tea. Remove from heat and stir in the sugar. Cover and let steep for approximately 30 minutes. Then strain out the tea leaves/bags.
  2. Pour the liquid into a clean glass jar that can hold at least three liters. Add the remaining water to the jar and cover with a thin cloth. Allow the water to cool completely. If it's too hot when adding the Scoby, it could perish.
  3. Once cooled, pour in the kombucha and place the Scoby on top of the liquid. Cover with a cloth and secure with a rubber band. Allow it to sit for one to two weeks at room temperature.
  4. Once done, save the Scoby and some kombucha to use for future batches.

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Social media feeds young people junk food ads

Published 10 June 2025
– By Editorial Staff
A large majority of food advertisements that young people are exposed to promote unhealthy products such as fast food, snacks or sugar-sweetened drinks.
2 minute read

The majority of food advertising that young people encounter on social media promotes unhealthy products. This is according to a new study from Karolinska Institutet, where TikTok is identified as the platform with the highest exposure.

The survey is based on data from young people aged 13-16 who, over the course of a week, documented the advertising they saw in their social media feeds. They were given a choice of platform, with most choosing Tiktok or Instagram.

One third of all the ads young people were exposed to were for food or drink – and 70% of these were for unhealthy products such as fast food, snacks or sugar-sweetened drinks.

Exposure was highest on Tiktok, where participants could encounter up to 26 food-related ads per hour. On Instagram, the average was 13.

– In focus group interviews, participants said they were often tempted to make impulse purchases by the design of the ads. At the same time, several expressed a feeling of powerlessness in the face of the amount of advertising they encounter daily, said Sofia Spolander, researcher at the Department of Medicine, Huddinge in a press release.

Childhood obesity doubled

In the focus group, the young people also described how the advertising affected them and increased their cravings for unhealthy food, and that it was difficult to resist consumption.

Overweight among Swedish children aged 11–15 has more than doubled in the past 30 years, and obesity in this age group has quadrupled, according to the study. Young people are eating more unhealthy food than before, while consuming fewer fruits and vegetables. Unhealthy eating habits are one of the leading causes of poor health and premature death in Sweden.

The food environment influences our eating habits, and marketing is an important part of that environment. This study shows that the advertising young people encounter on social media goes against the dietary guidelines, says Spolander.

The study forms the basis of a new report from UNICEF Sweden and the Swedish Heart-Lung Foundation, which highlights how advertising for food and drink in social media affects the health of children and young people.

Young dog owners’ lifestyles negatively affect their dogs

Published 3 June 2025
– By Editorial Staff
Today, many people get a pet to fit into their passive lifestyle - rather than adapting to the animal's needs themselves.
2 minute read

Stressed and overweight dog owners feel their lifestyle also impacts their dogs, according to a new Novus survey commissioned by Arken Zoo’s veterinary services. The effect is especially noticeable among younger owners, who report that their own health issues spill over onto their pets.

The survey, conducted between March and April 2025, gathered responses from 1,046 Swedish pet owners aged 18 to 84 about their own and their dog’s well-being. The results reveal a strong link between owner lifestyle and pet health.

Half of pet owners consider themselves overweight, with two in ten not exercising at all. A quarter of dog owners say they walk their dog for an hour a day at most, while 18% say their dog is overweight. Veterinarian Per Bransell says the results are “alarming”, but not surprising.

– Today, many people get an animal to fit into the owner’s lifestyle instead of the owner adapting to the animal. Getting a pet is a commitment every day, not just on weekends and holidays, he said in a press release.

Young adults struggle so do their dogs

Among pet owners aged 18 to 34, 31% say they walk their dogs no more than an hour a day, and 23% report their pets are overweight.

Young owners also experience higher levels of stress: 42% see themselves as stressed, and 24% believe that stress affects their dogs. Staff at Hundstallet, a dog shelter that rehomes animals, say the survey aligns with what they see every day.

– People are increasingly unwell, and it has a direct impact on animals. We see a clear rise in dogs arriving in both poor physical and mental condition — often depressed, lacking proper veterinary care or stimulation, says Johnny Kroneld, Head of Communications & Fundraising at Hundstallet.

Use of obesity drugs surges in Finland

Published 27 May 2025
– By Editorial Staff
Sales of obesity medication have skyrocketed in Finland in just a few years.
1 minute read

The use of obesity medication increased significantly in Finland last year – many more Finns were treated for obesity compared to 2023. At the same time, opinions are divided on the effectiveness of the treatment.

A total of 75,000 Finns used medicines for weight loss or obesity treatment in 2024. This is an increase of 20% compared to 2023, according to the Social Insurance Institution of Finland (Kela). In five years, the number of users has increased more than elevenfold.

Semaglutide, sold under brands such as Ozempic and Wegovy, is the most popular. Originally designed as a drug for the treatment of type 2 diabetes, this type of medicine is not reimbursed if it is used for obesity alone. This means that Finns have to foot the bill themselves, which can be over €260 each month.

It is also unclear how effective this type of weight loss medication really is, but Pia Pajunen, an expert physician at Kela, says it is not a quick fix for losing weight.

If you stop using the obesity medication, the weight often starts to increase again quickly. It’s important that both doctors and patients are aware that research shows these medications generally need to be used long-term, she says in a press release.

Good fitness may prevent dementia

Published 27 May 2025
– By Editorial Staff
1 minute read

People at risk of dementia can reduce their risk by improving their fitness, according to a study from Karolinska Institutet. The study shows that the risk can be reduced by up to 35%.

In the study, published in the British Journal of Sports Medicine, researchers used data from 61,214 dementia-free people, drawn from the UK Biobank database. The participants, who were aged between 39 and 70, were followed over a period of 12 years.

On enrollment, participants completed a six-minute cycle test to measure fitness, and neurological tests were done to estimate their cognitive function. The researchers also examined genetic predisposition to dementia.

During the 12-year follow-up period, a total of 553 people were diagnosed with dementia, representing 0.9%.

The results show that better fitness is linked to reduced dementia risk and improved cognitive function. According to Weili Xu, Professor of Geriatric Epidemiology in the Department of Neurobiology, Care Sciences and Society, good fitness can reduce the risk of all forms of dementia by up to 35%.

– Our findings suggest that maintaining good fitness may be a strategy for preventing dementia, even among people with high genetic susceptibility, she says in a press release.

The researchers also emphasize that this is an observational study, so it is not possible to determine cause and effect. The number of dementia cases may also have been underestimated, they add, as UK Biobank participants are generally healthier than the general population.

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