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For women with gluten sensitivity (celiac disease or non-celiac gluten sensitivity), even trace amounts of gluten can drive or worsen endometriosis, adenomyosis, amenorrhea, migraines, and thyroid disease.
For women with FODMAP sensitivity (as opposed to gluten sensitivity), a full serving of wheat or other FODMAP food can cause digestive bloating and potentially worsen premenstrual mood symptoms and polycystic ovary syndrome (PCOS). Small amounts of wheat are usually fine.