A new preclinical study led by investigators from Mass General Brigham offers a potential explanation for two longstanding allergy puzzles: why allergies often appear only after repeated exposure, and why people with one allergy frequently develop others. The research was reported by Medical Xpress.
According to the announcement, the study addresses both questions together, suggesting a shared underlying process may be responsible. The summary does not describe the specific biological details of that process.
Because the work is preclinical, it has not been tested in humans. The findings should be considered preliminary until peer-reviewed results are available.