John Elflein
Research expert covering health and health care
Detailed statistics
U.S. cities suffering most from seasonal allergies 2024
Detailed statistics
Share of U.S. adults reporting impacted by seasonal allergies 2021
Detailed statistics
Share of U.S. college students with select diagnoses as of fall 2023
Health issues U.S. adults were concerned about or treating in 2021
Percentage of adults in the U.S. who stated they themselves or someone in their household were concerned with or treating select health issues in 2021
Common allergies among U.S. adults as of 2021
Percentage of adults in the United States with allergies who had select allergies as of 2021
Common allergic reactions among U.S. adults with allergies as of 2021
Percentage of adults in the United States with allergies who had select allergic reactions as of 2021
Common adverse effects of allergies on life among U.S. adults as of 2021
Percentage of adults in the United States who stated their allergies impacted their quality of life as of 2021
Common drug allergies among U.S. adults as of 2021
Percentage of adults in the United States with drug allergies who were allergic to select drugs as of 2021
Share of U.S. college students with select diagnoses as of fall 2023
Percentage of college students in the U.S. who had ever been diagnosed with select conditions, as of fall 2023
Share of U.S. adults with a diagnosed seasonal allergy in 2021, by gender
Percentage of adults with a diagnosed seasonal allergy in the United States as of 2021, by gender
Share of U.S. adults with a diagnosed seasonal allergy in 2021, by age group
Percentage of adults with a diagnosed seasonal allergy in the United States as of 2021, by age group
Share of U.S. adults with a diagnosed seasonal allergy in 2021, by race/ethnicity
Percentage of adults with a diagnosed seasonal allergy in the United States as of 2021, by race and ethnicity
Severity of seasonal allergies among U.S. adults as of 2023, by gender
Percentage of adults in the United States with seasonal allergies as of 2023, by severity and gender
Severity of seasonal allergies among U.S. adults by age 2023
Percentage of adults in the United States with seasonal allergies as of 2023, by severity and age
Severity of seasonal allergies among U.S. adults by region 2023
Percentage of adults in the United States with seasonal allergies as of 2023, by severity and region
U.S. cities suffering most from seasonal allergies 2024
U.S. cities suffering most from seasonal allergies in 2024*
Share of U.S. adults with a diagnosed food allergy in 2021, by gender
Percentage of adults with a diagnosed food allergy in the United States as of 2021, by gender
Share of U.S. adults with a diagnosed food allergy in 2021, by age
Percentage of adults with a diagnosed food allergy in the United States as of 2021, by age group
Share of U.S. adults with a diagnosed food allergy in 2021, by race and ethnicity
Percentage of adults with a diagnosed food allergy in the United States as of 2021, by race and ethnicity
Former and current vegetarians' reasons for following this diet in the U.S. 2023
Which of the following are reasons why you personally were or are a vegetarian?
Prevalence of current asthma in the United States 2001-2021
Percentage of persons with current asthma in the United States from 2001 to 2021
Percentage of current asthma in the United States 2001-2021, by age group
Percentage of persons with current asthma in the United States from 2001 to 2021, by age group
Percentage of current asthma in the United States 2001-2021, by region
Percentage of persons with current asthma in the United States from 2001 to 2021, by region
Share of those with asthma who had an asthma attack in the past year U.S. 2001-2021
Percentage of people in the U.S. with asthma who had one or more asthma attacks in the past 12 months from 2001 to 2021
Share of U.S. people with asthma who had an asthma attack in the past year in 2020
Percentage of individuals in the U.S. with asthma who had one or more asthma attacks in the past 12 months as of 2020, by age
Rate of deaths with asthma as underlying cause in the U.S. by gender 2018-2022
Rate of deaths with asthma as the underlying cause in the U.S. from 2018 to 2022, by gender (per 100,000 population)
Commonly used allergy medications among U.S. adults as of 2021
Percentage of adults in the United States with allergies who used select allergy medications as of 2021
Treatment of seasonal allergies among U.S. adults by type 2021
Types of treatment used for seasonal allergy symptoms by U.S. consumers as of 2021
U.S. consumers reporting ways to improve environment against allergy 2021
Actions undertaken by U.S. consumers to improve their environment to fight against allergy symptoms as of 2021
Share of U.S. adults who had seasonal allergy treatments covered by insurance 2021
Percentage of U.S. adults reporting that they, or someone in their household, had seasonal allergy treatments covered by health insurance as of 2021
Yearly spending of U.S. adults on allergy treatments 2021, by generation
Annual spending on allergy treatments of U.S. adults as of 2021, by generation (in U.S. dollars)
Saving of U.S. costs through generic pharmaceuticals by condition 2023
Cost savings through generics in the United States in 2023, by major condition (in billion U.S. dollars)
Number of montelukast prescriptions in the U.S. 2004-2021
Number of montelukast prescriptions in the U.S. from 2004 to 2021 (in millions)
Montelukast out-of-pocket cost in the U.S. 2004-2021
Montelukast out-of-pocket cost in the U.S. from 2004 to 2021 (in U.S. dollars)
Top therapy areas in the U.S. by number of prescriptions 2022
Leading 20 therapy areas in the United States in 2022, by number of prescriptions (in millions)
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