Asthma Statistics


Nine asthma statistics presented in graphic form

Asthma prevalence

Asthma occurs in people of all ages, ethnicities, and genders, but there are some populations where it is more common:

  • 26.5 million people live with asthma in the United States10
  • Asthma affects 7.7% of adults and 9.4% of children 10
  • Asthma affects more boys than girls in childhood 9
  • Asthma is more common in adult women than adult men 9
  • Asthma is more common in Blacks and American Indians or Alaskan Natives 9

Asthma prevalence by race and ethnicity

  • Blacks 10.1% 9
  • American Indians/Alaskan Natives 9.6% 9
  • Whites 8.1% 9
  • Hispanics 6.8% 9
    •  There is a wide divergence in asthma morbidity among Hispanic subgroups. 14
    • Puerto Rican Americans have almost twice the asthma rate as compared to the overall Hispanic population. 14
    • The prevalence of asthma in Puerto Rican Americans is 12.8% 9
  • Asians 4.4% 9

Definition of asthma

Asthma is a chronic, or long-term, condition that intermittently inflames and narrows the airways in the lungs. The inflammation makes the airways swell. Asthma causes periods of wheezing, chest tightness, shortness of breath, and coughing. People who have asthma may experience symptoms that range from mild to severe and that may happen rarely or every day. When symptoms get worse, it is called an asthma attack. Asthma affects people of all ages and often starts during childhood.

The goal of asthma management is to achieve control with an asthma action plan. An asthma action plan may include monitoring, avoiding triggers, and using medicines. 1

Causes of asthma

The exact cause of asthma is unknown, though it may be a combination of factors some of which include:

  • Genetics 2
  • Viral respiratory infections in early childhood 3, 4
  • Environmental exposures, such as children born to mothers who smoked during pregnancy, and children exposed to indoor allergens and outdoor pollution, 5,6

Asthma triggers

There are multiple environmental and behavioral factors which can trigger asthma symptoms with some of the most frequently reported triggers including:

  • Dust 7
  •  Smoking 7
  • Coughing 7
  • Pollution 7
  • Exercise 7
  • Strong Odors 7
  •  Animals 7

Asthma treatment

Treatment of asthma focuses on diagnosis, treatment control symptoms, and routine follow-up to ensure adequate control, as well as the provider and the patient working together to create an “asthma action plan”. There are two primary focuses of treatment 8:

  1. Reduce impairment – this includes reducing the severity and frequency of symptoms which will reduce the impact on daily function
  2. Reduce risk – this is done through reducing the risk of future complications from asthma including asthma attacks and impacts on lung function.

Disparities in asthma

In addition to the disparities seen in asthma between gender, age, and ethnicity, there are also disparities based upon household income:

  • Asthma affects 11.7% of people living in poverty 9
  • As income increases, asthma prevalence decreases, with those in the highest income bracket having the lowest rates of asthma at 6.8% 9

Asthma morbidity & mortality

There are 26.5 million people living with asthma in the United States, including:

  • 6.1 million children under the age of 18 10
  • 20.4 million adults 10

Of those who have ever had a diagnosis of asthma, many reported at least one or more asthma attack including:

  • 51.6% of children 9
  • 43.6% of adults 9

In 2019, 4,145 people died from asthma 11:

  • The asthma death rate is highest among people over the age of 65 11
  • Adult females have a higher rate of death than males 11
  • Among children, boys are more likely to die than girls 11
  • Blacks are two to three times more likely to die from asthma than all other racial or ethnic groups 11 

School children & asthma

Asthma is one of the leading chronic illnesses of childhood and adolescence 12

  • One in 10 school-aged children have asthma 12
  • Over 13 million school days are missed annually due to asthma 15
  • Children with asthma miss 2.3 days more of school than their peers with a per-child cost of $207
  • Over half of school children with asthma missed as least one day of school in the previous year due asthma 13
  • 5.5% of children with an asthma-related school absence were unable to see a primary care doctor due to cost 13

The economic burden of asthma

Asthma is an extremely costly disease, costing the United States $81.9 billion annually 13

  • 61% of these costs are medical 13
  • 39% of costs are associated with absenteeism and mortality 13

The annual per-person medical costs for asthma are $3,266 annually 13.  These costs break down as follows:

  •  $1,830 for medications 13
  • $640 for office visits 13
  •  $529 for hospitalizations 13
  • $176 for outpatient hospital visits 13
  • $105 for care in the emergency department 13

Asthma-related deaths cost $29 billion annually 13

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Quick 3-5 minute videos on asthma, allergies, and related conditions.

Are there other conditions that may look like asthma or complicate asthma?

There are other types of respiratory conditions that are different than asthma.  The symptoms, diagnosis and treatment can vary depending upon the condition. Here are some of them.