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Body mass index is just a number: Conflating riskiness and unhealthiness in discourse on body size
Author(s) -
Gutin Iliya
Publication year - 2021
Publication title -
sociology of health and illness
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.146
H-Index - 97
eISSN - 1467-9566
pISSN - 0141-9889
DOI - 10.1111/1467-9566.13309
Subject(s) - body mass index , index (typography) , statistics , demography , history , sociology , mathematics , medicine , computer science , world wide web
Despite the ubiquity of the body mass index (BMI) in discourse on health, there is ambiguity in its use as a biomarker of current abnormality versus future risk. This distinction is consequential for knowledge of the relationship between body size and health, as well as for individuals deemed to have abnormal and ‘unhealthy’ bodies. Consequently, the purposes of this review are threefold. The first is to differentiate this ‘biomarker’ perspective from extant critiques of BMI as a proxy for health behaviours or as the defining characteristic of obesity as a disease . The second is to highlight the shift towards treating BMI as a measure of attained unhealthiness, rather than a probabilistic indicator of risk. Finally, rather than call for the abolition of BMI, this paper argues that its continued use as ‘just a number’ is in keeping with the push for weight neutrality in research and practice. The review concludes by demonstrating how the riskiness and unhealthiness of body size is conflated in public health messaging on COVID‐19. BMI is a marker of risk, but its use as a surrogate for COVID‐19 severity equates body size with health, shaping beliefs about vulnerability and personal responsibility amid an ongoing pandemic.