Future allergy seasons will start more than a month earlier and be far more intense because of the climate crisis, new research shows.
, published Tuesday in the journal Nature Communications, found by the end of the century, pollen season could begin as much as 40 days earlier than it has in recent decades in the US because of global warming. Researchers also found annual pollen counts could climb by up to 250%.
The timing of tree pollen is released -- especially in regions where there are a number of deciduous trees -- varies. For instance, in Michigan -- where Steiner lives -- birch trees typically pollinate first, then oak or pine, followed by other species over the course of a few months. Lewis Ziska, a plant physiologist and associate professor at Columbia University, suffers from allergies himself and carries a rescue inhaler at all times. He said the study extends the work that's already been done and makes clear the climate crisis will, at some point, exacerbate allergies, asthma and other public health problems.
Wind-driven pollen, which plays an important role in plant fertilization, is closely tied to temperature and precipitation changes. So as spring seasons get warmer earlier due to climate change, plants could pollinate much earlier and for a longer period of time than they currently do. A longer and earlier start to pollen season could trigger a public health emergency, researchers say. More than 24 million people in the US experience pollen-induced respiratory allergies or hay fever, according to theWhile more research is needed in determining larger socioeconomic implications, Steiner said this could result in a large economic loss due to missed work, school days, medical expenses, and early deaths.
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