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The findings of a new study suggest that though overweight and obesity are risk factors for many diseases, a higher BMI can be linked to higher survival rates in patients hospitalized for severe bacterial infections.Scientists at Sahlgrenska Academy, University of Gothenburg, and Skaraborg Hospital in Skovde carried out the research, and their study has now been published in the journal PLOS ONE. The data were collected before the COVID-19 pandemic.The population-based study involved observations, over a nine-month period, of all 2,196 individual adults receiving care for suspected severe bacterial infection at Skaraborg Hospital in Skovde. The researchers followed the patients in this study population over time, during, and after their hospital stay.The results show that the raised chances of survival were associated with a higher body mass index (BMI) in both the short and long term, at 28 days and one year after hospitalization respectively. The differences in survival rates were clear. In the normal-weight group, 26 percent were dead within a year. The corresponding figures in the groups with higher BMI were 9-17 percent.Occasional surveys of limited patient groups have previously shown similar results. The new findings clarify and confirm the "obesity survival paradox": that overweight and obesity afford protection against severe bacterial infections.Asa Alsio, adjunct senior lecturer in infectious diseases at Sahlgrenska Academy and senior consultant in infectious diseases at Skovde, is the study's first and corresponding author."In the context of most other diseases, overweight and obesity are disadvantageous. This applies to several types of cancer, cardiovascular disease, and, in particular, COVID-19, in which a higher BMI is associated with higher mortality. Paradoxically, it's the other way round here."What we don't know," Alsio continues, "is how being overweight can benefit the patient with a bacterial infection, or whether it's connected with functions in the immune system and how they're regulated. More knowledge is needed about how being overweight affects the immune system. One patient category it could be studied in is individuals undergoing bariatric surgery."Gunnar Jacobsson, Sahlgrenska Academy and senior consultant in infectious diseases at Skaraborg Hospital in Skovde is the senior author of the study:"The COVID-19 pandemic has highlighted vulnerable patient groups, and overweight people have been hit hard. Maybe experience and handling of care for patients with severe bacterial infections can be used to improve the prognosis of COVID-19 and overweight. Globally, obesity is increasing at an alarming rate. More knowledge is needed to shed light on how body weight affects the body's defenses against infection so that treatment can be individualized," Jacobsson says.The researchers think there is a need for more studies, at the population level, of how BMI affects treatment outcomes in various infectious diseases and what connections with the regulation of the immune system may exist.( With inputs from ANI )Disclaimer: This post has been auto-published from an agency feed without any modifications to the text and has not been reviewed by an editor

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Health :Obesity might protect against death in severe bacterial infection

The findings of a new study suggest that though overweight and obesity are risk factors for many diseases, a higher BMI can be linked to higher survival rates in patients hospitalized for severe bacterial infections. ...