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Why is Oklahoma such a challenging place to live for seasonal allergy sufferers?

Rachel Hopkin gets tested for allergies
Rachel Hopkin
When How Curious host Rachel Hopkin got tested for allergies, it turned out she was allergic to every single common tree, grass, and weed in Oklahoma bar one: Cedar Elm

Every year, the Asthma and Allergies Foundation of America puts out an Allergy Capital report which ranks the top 100 large cities in the U.S. if you suffer from pollen-based seasonal allergies.

Oklahoma City and Tulsa regularly make the top 10 and this year they take the No. 3 and 4 spots, respectively. (Wichita, KS, ranks first.)

In this month’s How Curious, host Rachel Hopkin— who found that her own allergy woes grew exponentially after moving to the Sooner State a couple of years ago—explores what makes the Sooner State so challenging in this regard.

She also learns about ways to mitigate the effects, and seeks guidance on cultivating non-allergenic plants for our similarly-afflicted landscaping listeners.

You can find the full episode transcript here.

Map showing the six different biological zones in Oklahoma
Estelle Levetin and Paul Buck
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Estelle Levetin
Map showing the six different biological zones in Oklahoma

Professor Estelle Levetin, who is a contributor to this episode, is an expert on airborne allergies. Her own website is at Tulsapollen.com.

Aside from study allergenic sources in Oklahoma, Levetin has also looked into allergy-free plants and is a contributor to the following guide on landscaping for allergy sufferers.

Cover of the 2025 Allergy Capitals report
Asthma and Allergy Foundation of America
Cover of the 2025 Allergy Capitals report

The Asthma and Allergy Foundation's 2025 Allergy Capitals report can be accessed here.

Hands holding pharmacological remedies
Simon Kadula
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Unsplash

The websites of both the Asthma and Allergies Foundation of America and the Global Allergy & Airways Patient Platform offer many resources for allergy sufferers.

Cedar tree (top) and ragweed
Cedar trees and ragweed are both major causes of pollen allergies in Oklahoma sufferers

Board-certified allergist Dr. Shahan Stutes works at the Oklahoma Allergy and Asthma Clinic. If you are looking for an allergy specialist in your area, ask your primary care provider for a referral.

Rachel is a British-born and U.S.-based radio producer and folklorist with a passion for sound and storytelling. At KGOU, she is host and producer of the How Curious podcast and various special projects.
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