Why Eat Bread? Go to www.whyeatbread.com & find out. Grain foods provide many nutrients that are vital for the health and maintenance of our bodies, including B vitamins, folic acid and iron (1). Bunny Buns are an excellent source of Thiamin (Vitamin B1) and a good source of Riboflavin (Vitamin B2), and Niacin (Vitamin B3). These vitamins play an important role in metabolism by helping the body produce and release energy from protein, fat and carbohydrates (1). They also help the nervous system function properly (1). Because the body doesn't store these B vitamins, you should eat foods that contain them every day (3). Bunny Buns are a good source of Iron. Iron is used to carry oxygen in the blood (1,3). Whole and enriched refined grain products are sources on non-heme iron in American diets (1).