What causes low Eos?

Low eosinophil levels, or eosinopenia, can be caused by several factors, including acute infections, particularly bacterial infections, which can suppress eosinophil production. Additionally, corticosteroid use or other medications that affect bone marrow function may lead to decreased eosinophil counts. Stress and certain endocrine disorders, such as Cushing's syndrome, can also contribute to low eosinophil levels.