You’re not imagining it, your allergies are getting worse each year | Health - Hindustan Times
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You’re not imagining it, your allergies are getting worse each year

Bloomberg | | Posted by Krishna Priya Pallavi, New Delhi
Apr 19, 2024 01:38 PM IST

A longer pollen season means more sneezing and higher health care costs. It is a prime example of a common condition getting worse because of a warmer world

If you’ve sensed that your allergies are getting worse each year, it’s not your imagination: Allergy season in the US is getting longer and more intense. You can thank climate change for your misery. And yet we’re not doing enough — to slow down climate change, of course, but to recognize and respond to its very clear health effects. (Also Read | Researchers find how skin biomarkers in infants can predict early development of food allergies)

During spring, plants begin to bloom and release pollen into the air, which can trigger an allergic reaction in some people. Common symptoms of spring allergies include sneezing, runny or stuffy nose, itchy eyes, throat and nose, watery eyes, and fatigue. In some cases, people may also experience asthma symptoms such as coughing and wheezing. If you are someone who suffers from seasonal allergies during the springtime, here are five ways to manage them.(Freepik)
During spring, plants begin to bloom and release pollen into the air, which can trigger an allergic reaction in some people. Common symptoms of spring allergies include sneezing, runny or stuffy nose, itchy eyes, throat and nose, watery eyes, and fatigue. In some cases, people may also experience asthma symptoms such as coughing and wheezing. If you are someone who suffers from seasonal allergies during the springtime, here are five ways to manage them.(Freepik)

These weigh on the economy, too. Estimates for direct costs, for things like antihistamines and inhalers, and indirect ones, for office absences or lower productivity, range in the billions of dollars. And while much of the research stems from an era when better allergy meds were just being introduced, one more recent study out of Sweden found that was costing the country of 9.5 million people upwards of 1.3 billion euros per year.

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Allergies are a prime example of a common condition getting worse because of a warmer world. “When you turn up the temperatures on plants, especially in a controlled setting like a greenhouse, or you increase carbon dioxide concentrations, plants put out quite a bit more pollen,” explains William Anderegg, director of the Wilkes Center for Climate Science and Policy at the University of Utah.

Anderegg conducted an oft-cited study of pollen trends that found seasons now start 20 days earlier than they did in 1990, and last about 8 days longer. Meanwhile, there’s about 20% more pollen filling the air. Much of that shift is due to climate change.

“Pollen is a really clear example of how climate change is with us here and now, in our backyards and already affecting our health,” he says.

That could have real ramifications for the quarter of adults and nearly 20% of children in the US with seasonal allergies. They will be wheezier and sneezier for more of the year. And they might be caught unprepared when allergens appear earlier than expected (to be most effective, allergy medicine should be taken before exposure).

When the lungs are aggravated by pollen, it can make people more vulnerable to certain illnesses, like the common cold and sinus infections. And it’s downright dangerous for people with asthma: An analysis of asthma patients Maryland found that very early-onset spring led to a 17% increase in hospitalizations.

As the climate worsens, so too could pollen’s health effects. A 2019 study found that tree and grass pollen combined were responsible for some 35,000 to 60,000 emergency room visits each year, many of those cases in children. The researchers predicted climate change could push those numbers up by 14% by 2090, with grass pollen becoming a bigger problem, particularly in the Northeast, Midwest and Southern Great Plains regions.

Many more people could eventually be living in allergy misery. Each of us has an individual pollen threshold, above which the immune system is triggered and allergy symptoms appear, explains Kenneth Mendez, CEO and President of the Asthma and Allergy Foundation of America. A more intense pollen season will make someone with a lower threshold feel worse, and could tip people with higher thresholds into the ranks of allergy sufferers.

People with seasonal allergies should stay on top of their symptoms by starting their meds at the first signs of spring — even if those occur in February. Antihistamines need to be taken regularly for about two weeks before pollen season starts to be effective, Mendez says. If over-the-counter medicines seem to have lost their punch, see a specialist, who might recommend allergy shots.

Allergy sufferers should also lean into tried-and-true methods of lessening pollen exposure, like keeping windows shut and showering before bed, and getting a good home air purifier.

But it can’t just be on individuals to cope. Workplaces could ensure that indoor air quality, an issue that got attention during the peak pandemic years, continues to be a priority. And local and federal governments should be doing more to blunt the impact of longer allergy seasons.

A good starting place would be to do a better job of tracking pollen counts. Large swaths of the country, including some major cities and several states, don’t even have a pollen station, which are run and funded by volunteers in coordination with the National Allergy Bureau. Anderegg notes that only one exists for his entire home state of Utah. That lack of coverage makes it harder for people like him to effectively study long-term allergen patterns, as well as warn the public about signs of changes that could make them sicker. Cities or states could throw a few dollars at expanding this network.

City planners should also be taking pollen into account as they design vegetation to mitigate the effects of climate change. Increasing tree cover is a vital way to cool down urban heat islands. But tree pollen also is the primary driver of spring allergy woes (grass is typically the main culprit in the summer, and ragweed and mold in the fall), which means urban planners need to make smart planting choices. For decades, cities tended to plant male rather than female trees, as they don’t bear fruit that litters the ground. But male trees make much more pollen, meaning allergy sufferers pay a price for that botanical bias.

“There is a huge potential for trees to cool down cities and help us adapt to heat waves,” Anderegg says. “We just want to plant the right species in the right places for the right reasons.”

A bad allergy season not only results in human suffering, but in high costs for treatments, doctors’ visits and hospitalizations. People miss work due to hay fever and asthma. More often, they head into the office with symptoms and are less productive because of it. Without action, the toll on both our sinuses and the economy will only get worse.

(This column does not necessarily reflect the opinion of the editorial board or Bloomberg LP and its owners.)

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