Research from the Norwegian University of Life Sciences indicates that daily consumption of Jarlsberg cheese can improve bone density. The study focused on adults over 55 experiencing early-stage osteoporosis.
How Propionibacterium freudenrechii triggers bone growth
The potential for Jarlsberg cheese to strengthen the skeletal system is not merely about calcium intake, but rather the specific biological process of fermentation. According to the report, the cheese is fermented using a particular bacterium known as Propionibacterium freudenreichii.
This specific bacterium is believed to stimulate the production of osteocalcin, a protein that is essential for maintaining and building strong human bones. By introducing this probiotic element through a daily diet, the researchers suggest that the body can more effectively combat the thinning of bone tissue associated with aging.
The 32-week regimen of three to four slices
To test this hypothesis, experts at the Norwegian University of Life Sciences in Oslo conducted a controlled trial involving 57 men and women. All participants were over the age of 55 and were already in the early stages of osteoporosis,making them an ideal group to measure the efficacy of dietary intervention.
The dietary reequirements were specific: women in the study consumed three slices of Jarlsberg cheese every day, while the men consumed four slices . This regimen was maintained for a period of 32 weeks to ensure that the changes in bone markers were sustainable and not merely a short-term fluctuation.
A 25 per cent surge in osteocalcin levels
The results of the trial, as reported in BMJ Nutrition, Prevention and Health, showed a significant biological response. The data revealed that levels of the bone-vital protein osteocalcin increased by approximately 25 per cent among those following the Jarlsberg diet .
Crucially, the researchers noted that the study was not funded by any Jarlsberg manufacturers, which adds a layer of academic independence to the findings. The scientists concluded that incorporating this specific Norwegian cheese into a daily routine could be a beneficial dietary approach to support overall bone health .
Addressing the 3.5 million UK osteoporosis cases
The implications of this study extend far beyond the borders of Norway , particularly in regions like the United Kingdom, where osteoporosis affects roughly 3.5 million people. This bone-thinning disorder significantly increases the risk of fractures and mobility loss in the elderly, creating a massive burden on healthcare systems.
This finding fits into a broader scientific trend exploring the "gut-bone axis," where fermented foods and probiotics are studied for their systemic effects on the body. While pharmaceutical interventions are common for osteoporosis, the prospect of a dietary strategy using a common food item offers a lower-risk alternative for those in the early stages of the disease.
The missing link between Jarlsberg and other fermented dairy
Despite the positive results, several questions remain regarding the exclusivity of these benefits. It is currently unclear if other Swiss-style cheeses with similar holes and fermentation processes provide the same boost to osteocalcin, or if the specific strain of Propionibacterium freudenreichii used in Jarlsberg is the sole driver of the improvement.
Additionally, the study does not address how these results might differ for individuals with lactose intolerance or those with existing dietary restrictions. Whether the 25 per cent increase in protein levels translates directly into a measurable reduction in bone fractures over several years remains a point for future longitudinal research.
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