Understanding the Global Allergy Epidemic through a Karelian Lens
Undeniably, the global allergy epidemic is a concerning phenomenon, and we may find clues to understanding this issue in the expansive birch forests and vast lakes of Karelia. This region, located in eastern Finland and northwestern Russia, could hold the key to understanding the rise in allergy rates.
When your child was diagnosed with a milk and soy protein allergy, you entered a world fraught with dietary restrictions and persistent worry. This type of allergy, known as a delayed, non-IgE allergy, is not life threatening but can cause significant discomfort if dairy or soy is consumed.
Allergy Statistics in the UK
Presently, about 21 million people in the UK suffer from allergies, which equates to at least a quarter of British adults having hay fever. A study by the Food Standards Agency in 2024 reveals that one in 20 British adults has a diagnosed food allergy. Alarmingly, this also includes between 5% and 8% of children, or approximately two children in every classroom. One in 11 children has asthma and peanut allergies are now diagnosed in one in every 50 children!
Despite these numbers, there are only 80 allergy specialists and approximately 50 GPs with specialist roles in allergies within the NHS. This means about 80% of people diagnosed with food allergies never get the chance to see a specialist.
History of Allergies
Our reaction to our environment is relatively new. Dr John Bostock began the first research into hay fever in the 1820s. Interestingly, the term “allergy” wasn’t coined until 1906. Since the early 20th century, the number of people with hay fever and asthma cases began to increase, with the food-allergy wave starting in the 1980s and persisting today. In the first two decades of this century, hospital admissions for anaphylaxis in the UK rose by an alarming 174%.
The Biodiversity Hypothesis: A Hopeful Outlook
The research of Dr Tari Haahtela, an emeritus professor of clinical allergology at the University of Helsinki, has led to the development of the biodiversity hypothesis. This theory suggests that human health is directly affected by a lack of exposure to plants, animals, and microbes in our natural environment, particularly during childhood. Studies, including one that transposed forest soil and leaf litter into inner-city kindergarten playgrounds, substantiate the biodiversity hypothesis.
According to this theory, it’s not that we need to go back to nature, but rather bring natural elements back into our cities. Something as simple as gardening for an hour three times a week can make a significant difference to our immune systems and consequently, our susceptibility to allergies.
While it may take some time, there’s hope on the horizon for turning the tide on new allergy diagnoses. By understanding the intricacies of allergies, teaching parents of at-risk children about early weaning, and reducing our use of antibiotics, we can make a positive impact on global allergy rates.
Future Directions for Allergy Research and Treatment
As part of the efforts to combat the rise in allergies, the UK will be launching its own National Allergy Strategy later this month. This ten-year plan, created by the UK allergy charities and the British Society for Allergy and Clinical Immunology, aims to revolutionise the way we treat and prevent allergies.
Allergies are a ‘signal disease’, indicating that something is wrong with the way our bodies interact with our environment. Addressing the rise in allergies is not just an issue for those suffering from allergies; it’s a wake-up call for all of us to reconsider our relationship with the natural world.
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