Evidence check: Cortisol in the context of Allergie

Cortisol is a stress hormone that can modulate inflammatory processes in the body. In the context of allergies, cortisol plays an indirect role by influencing immune responses, particularly the activity of mast cells and T cells. Chronic stress can alter cortisol secretion, potentially amplifying or dampening allergic reactions. However, a cortisol test is not a diagnostic tool for allergies. Allergy diagnosis is routinely based on specific IgE antibodies and provocation tests. MyBody-X may offer cortisol measurements as part of stress or hormone panels, but these are not validated as allergy tests. The evidence linking cortisol directly to allergies is mechanistic: plausible biological pathways exist, but there is no strong human evidence from controlled studies establishing cortisol as a reliable biomarker for allergies. Therefore, cortisol should not be used for allergy diagnostics. If an allergy is suspected, a doctor's visit with specific testing (e.g., skin prick test, IgE measurement) is recommended. Cortisol measurement may serve as an adjunctive indicator of stress burden but does not replace allergological workup.