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Immunonutrition: can you be what you eat?
1Division of Gastroenterology, Olive View-UCLA Medical Center, UCLA School of Medicine, Sylmar, California 91342, USA. rkoretz@dhs.co.la.ca.us
Immunonutrients, like glutamine and omega-3 fatty acids, may improve outcomes when used in specialized nutrition support. However, more research is needed to confirm their effectiveness and understand their mechanisms.
Area of Science:
- Clinical Nutrition
- Immunology
- Gastroenterology
Background:
- Certain nutrients, including glutamine, omega-3 fatty acids, and arginine, are known to modulate immune responses.
- The use of these nutrients in clinical nutrition is termed "immunonutrition."
Purpose of the Study:
- To evaluate the efficacy of individual immunonutrients and combined immunonutrient formulas in nutrition support.
- To critically assess the existing evidence regarding the clinical benefits of immunonutrition.
Main Methods:
- Review of randomized controlled trials (RCTs) evaluating individual immunonutrients.
- Analysis of RCTs comparing commercial immunonutrition formulas with standard enteral nutrition.
Main Results:
- Individual immunonutrient supplementation has largely failed to demonstrate clinical efficacy in RCTs.
- Some commercial immunonutrition formulas have shown improved patient outcomes compared to standard enteral nutrition in RCTs.
- Concerns exist regarding the methodological quality of trials supporting commercial formulas.
Conclusions:
- While some commercial immunonutrition formulas show promise, definitive conclusions on efficacy are limited by trial design and execution issues.
- Further research is required to elucidate whether observed benefits stem from specific immunonutrients or the overall nutrition regimen.
- The immunomodulatory effects of nutrients can be disease-specific, necessitating tailored approaches.
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