Dietary Polyphenols, Plant Metabolites, and Allergic Disorders: A Comprehensive Review

Area of Science:

• Nutritional Immunology
• Pharmacology
• Microbiome Research

Background:

• Allergic disorders are increasing globally, prompting research into dietary interventions.
• Dietary polyphenols and plant metabolites are recognized for their anti-inflammatory, antioxidant, and immunomodulatory effects.
• These natural compounds are investigated for their potential to combat allergies.

Purpose of the Study:

• To explore the mechanisms of anti-allergic effects of dietary polyphenols.
• To review evidence supporting polyphenol use in managing allergic conditions.
• To discuss limitations and future research directions for polyphenol-based allergy therapies.

Main Methods:

• Review of experimental and clinical studies on dietary polyphenols.
• Analysis of mechanisms including protein allergenicity reduction, immune modulation, and gut microbiota modification.
• Examination of specific polyphenols like catechins, resveratrol, curcumin, and quercetin.

Main Results:

• Polyphenols demonstrate capacity to reduce allergenicity and modulate immune responses.
• Evidence suggests efficacy in alleviating symptoms of food allergy, asthma, atopic dermatitis, and allergic rhinitis.
• Polyphenols can influence gut microbiota composition, contributing to anti-allergic effects.

Conclusions:

• Dietary polyphenols and plant metabolites possess significant anti-allergic properties.
• These compounds can be developed into preventative and therapeutic strategies for allergic conditions.
• Further research is needed to fully elucidate mechanisms and optimize clinical application.