Complex sentence: Because of this food advocacy groups consider labeling irradiated food raw as misleading, and others are concerned that that eating foods that have been exposed to high doses of irradiation, or eating a diet composed entirely of irradiated food could lead to Vitamin deficiencies.
Split into simpler sentences: Because of this food advocacy groups consider labeling irradiated food raw as misleading. Others are concerned that that eating foods that have been exposed to high doses of irradiation, or eating a diet composed entirely of irradiated food could lead to Vitamin deficiencies.