Every day, millions of people coexist with sneezing, itching eyes, asthma and respiratory congestion. And often the cause is not under our eyes, but suspended in the air: microscopic proteins released by pollen, mold, dust mites or pets.
Now, a research from the University of Colorado in Boulder opens a concrete possibility: to use a safe UV light to “deactivate” these allergens. He doesn’t kill them, because they are not alive. But it deforms them, changing its molecular form, so that the immune system no longer recognizes them as enemies.
In the laboratory, scientists filled an isolated chamber with widespread allergens: Fel D 1 (the main allergen of the cat), protein of birch and Fleolo pollen, mold spores and others. Then they exposed them to a particular ultraviolet light called UV222, less aggressive than the classic germicidal UV and considered safe for eyes and skin.
The result? In less than 30 minutes, allergen levels decreased up to 61%. Not because they disappeared, but because our body no longer recognizes them as a danger.
The difference between living with chronic symptoms and breathing well
Those suffering from allergies know how much they can influence daily life: disturbed sleep, fatigue, headache, difficulty concentrating. Not to mention those who have asthma, a chronic disease that can also become dangerous.
Currently, solutions require constant commitment: frequent cleaning, sheets washed at high temperatures, hepa filters, renunciation of pets. But they are often difficult to maintain measures.
In a previous study, for example, only 31 out of 219 participants managed to follow a cleaning protocol for 8 months to reduce cats’ allergens.
With UV222 light, however, a few minutes of exposure would be enough to obtain a concrete effect. According to researchers, it could be used in closed environments such as houses, schools, hospitals or even dusty cellars, improving air quality without invasive interventions.
And the risks? Scientists underline that the intensity of the light used is well below the safety limits established by the health authorities. However, it remains to be understood what happens in the long term, and if the technology will be truly effective outside the laboratory.
A possible, not miraculous, but concrete solution
The message is clear: this is not a miraculous care, and does not replace medical treatments. But it is a concrete, realistic, already tested idea that could lighten the daily life of those who fight against seasonal and respiratory allergies.
In a world where the air we breathe is increasingly polluted and rich in irritating particles, every innovation that helps us to reduce the load on our immune system is precious.
Of course, there are still many open questions: what happens to “deformed” proteins? Do they remain in the air? Do they degrade? And how long will the effects last?
But this discovery marks a first step: to use the light not to see better, but to breathe better.
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