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Viral obesity: fact or fiction?
1Department of Community Health Sciences, The University of Southern Mississippi, Hattiesburg, MS 39406-0001, USA. amal.mitra@usm.edu
Summary
Viral infections may contribute to obesity. Research indicates certain viruses, like adenovirus-36, cause physiological changes leading to increased body fat in animal models, suggesting a potential link requiring further study.
Area of Science:
- Virology
- Endocrinology
- Public Health
Background:
- Obesity is a complex condition with multiple contributing factors.
- While lifestyle is a primary focus, emerging evidence suggests viral infections may play a role.
- Understanding all causal factors is crucial for effective obesity management.
Purpose of the Study:
- To review the evidence linking viral infections to obesity.
- To explore potential mechanisms by which viruses could induce obesity.
- To assess the current evidence for a causal relationship between viral infections and obesity.
Main Methods:
- Literature review of studies investigating viral agents and obesity.
- Examination of animal models demonstrating obesity-related physiological changes post-viral infection.
- Analysis of proposed mechanisms of viral-induced obesity.
Main Results:
- Adenovirus-36 infection in animal models shows increased body weight and fat accumulation.
- Specific physiological changes observed include altered insulin sensitivity, glucose uptake, and leptin secretion.
- Other viruses like canine distemper virus and Borna disease virus have also been associated with increased obesity in animals.
Conclusions:
- A link between viral infections and obesity cannot be excluded based on current evidence.
- Further epidemiological research is necessary to establish a definitive causal relationship.
- Findings may inform future strategies for obesity prevention and management.
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