All these can result in higher manganese or excessive iron storage, regardless of actual manganese or iron consumption, although by the time cancer develops, patients don't necessarily exhibit excessive liver storage of these elements any longer, or iron or manganese levels have dropped to below normal - frequently corresponding to perimenopausal or postmenopausal age ranges, along with reduced stomach acid levels. High manganese levels coincide with estrogen receptor-positive, and low manganese levels coincide with estrogen receptor-negative cancers... Full Text