Age- and sex-related variations in IgG responses to food antigens in a Thai population: Implications for personalized dietary advice

Food-specific IgG antibodies are increasingly investigated for their potential role in food intolerance, though their clinical relevance remains debated. Unlike IgE-mediated reactions, IgG-mediated responses are delayed and may be associated with gastrointestinal and systemic symptoms. Most prior studies have focused on Western populations, with limited evidence from Asian cohorts. This study aimed to explore age- and sex-related variations in IgG responses within a Thai population. We conducted