How BMI Influences Antibody Response to COVID-19

In a groundbreaking research led by the College of Queensland, researchers have unveiled a major revelation concerning the connection between physique weight and the physique’s immune response to SARS-CoV-2, the virus liable for COVID-19. Opposite to earlier assumptions, the analysis signifies that being chubby can impair the physique’s antibody response to a pure an infection however doesn’t compromise the effectiveness of the immune response triggered by vaccination. This nuanced understanding sheds gentle on the advanced interaction between weight, immunity, and the continued battle towards the worldwide pandemic.

Hyperlink Between Weight and COVID-19 Severity

The analysis, spearheaded by Marcus Tong, a Ph.D. candidate within the Faculty of Chemistry and Molecular Biosciences, builds upon earlier findings that established a correlation between being chubby—distinct from weight problems—and elevated severity of SARS-CoV-2 an infection. Tong emphasizes, “We have beforehand proven that being chubby will increase the severity of SARS-CoV-2.” This serves as a vital backdrop to the present research, which sought to delve deeper into the affect of weight on the physique’s immune response.

Impaired Antibody Response Submit-An infection

Blood samples had been collected from people who had recovered from COVID-19 and remained uninfected through the research period-approximately 3 months and 13 months post-infection. The outcomes had been revealing. “At 3 months post-infection, an elevated BMI was related to diminished antibody ranges,” Tong defined. Furthermore, at 13 months post-infection, an elevated BMI correlated not solely with diminished antibody exercise but additionally a diminished proportion of B cells, essential for constructing antibodies that fight COVID-19.(1 Trusted Supply
Elevated BMI reduces the humoral response to SARS‐CoV‐2 an infection

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Weight’s Restricted Affect on Vaccination Response

In a shocking flip, the research discovered that an elevated BMI didn’t affect the antibody response to COVID-19 vaccination roughly 6 months after the second vaccine dose. This discovery is critical, indicating that whereas being chubby might compromise the response to a pure an infection, it doesn’t undermine the safety provided by vaccination.

Implications for Well being Coverage Round COVID-19 Boosters

Affiliate Professor Kirsty Quick, a part of the analysis staff, underscores the broader implications of those findings for shaping well being coverage. She notes, “If an infection is related to an elevated threat of extreme illness and an impaired immune response for the chubby, this group has a doubtlessly elevated threat of reinfection.” As a response, she emphasizes the heightened significance of vaccination for people on this class.
Dr. Quick goes additional to problem current well being insurance policies associated to boosters and lockdowns. “From a public well being perspective, this knowledge attracts into query insurance policies round boosters and lockdowns,” she asserts. The analysis staff suggests the necessity for extra personalised suggestions tailor-made to chubby people, not only for managing ongoing COVID-19 challenges but additionally for addressing potential future pandemics.

International Implications and the Name for Vaccination Fairness

The research underscores a vital international dimension, notably regarding low-income international locations the place a excessive proportion of the inhabitants is chubby. Dr. Quick stresses the urgency of bettering SARS-CoV-2 vaccination in these areas, the place dependence on infection-induced immunity is prevalent. This name for vaccination fairness highlights the necessity for focused efforts to make sure that susceptible populations worldwide have equal entry to safety towards COVID-19.

The College of Queensland-led analysis provides a brand new layer of understanding to the intricate relationship between physique weight, immune response, and COVID-19 outcomes. Because the world continues its battle towards the pandemic, these findings supply essential insights that may inform extra nuanced and efficient public well being methods. From personalised suggestions for the chubby to international efforts in vaccination fairness, the analysis opens avenues for a extra focused and inclusive method within the ongoing struggle towards SARS-CoV-2.


  1. Elevated BMI reduces the humoral response to SARS‐CoV‐2 an infection – (

Supply: Medindia


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