Emma Nutrition

Simplifying the science through cooking and education. When I'm not on Mummy duties…

Vitamin C reduces exercise induced asthma


Vitamin C reduces exercise induced asthma aka broncho constriction or the decline of 10% or greater forced exercise volume within 1 second (FEV1). Dr. Harri Hemila from the University of Helsinki, Finland did a meta-analysis of Vitamin C studies and found that exercise induced wheezing, coughing and shortness of breath, known exercise induced asthma can be reduced by taking Vitamin C at a minimum dose of 200mg.

About 10% of the general population suffers from exercise-induced bronchoconstriction, but among some fields of competitive winter sports the prevalence can be up to 50%. In sports such as marathon running and skiing there is a 48% reduction in FEV1.

Vitamin C also halves the incidence of common cold episodes in people enduring heavy short-term physical stress.

Dr. Hemila concludes that given the low cost and safety of vitamin C and the consistency of positive findings in three randomized trials on EIB, it seems reasonable for physically active people to test vitamin C on an individual basis if they have respiratory symptoms such as cough associated with exercise.

Vitamin C may alleviate exercise-induced bronchoconstriction: a meta-analysis. Harri Hemilä. BMJ Open 2013;3:6 e002416 doi:10.1136/bmjopen-2012-002416

Author: EmmaNutrition

Emma Wight-Boycott MSc mBANT is a natural health expert with a passion for simplifying the science. Emma works with post natal mums, weekend runners and those with digestive issues to find the source of their health issues and rediscover their health mojo.

3 thoughts on “Vitamin C reduces exercise induced asthma

  1. Pingback: Become a Nutrition Expert and Help People Fulfil Their potential | Emma Nutrition

  2. Such a great and informative post. Thanks for sharing this to us and keep posting.

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