Breakfast cereals are marketed to all ages. For adults, companies such as Kellogg's, Quaker Oats, and General Mills promote their products for the health benefits gained from eating oat-based and grain-based cereals. Nevertheless, the vast majority of breakfast cereal sold is marketed to young children. Cereal manufacturers have been criticized for manufacturing breakfast cereals with a heavy sugar content aimed at children. Sugar-laden breakfast cereals have been extremely popular with children for decades, and many adults also buy them out of nostalgia (also because they enjoy the taste). The US government requires breakfast cereals to be fortified with various vitamins.
Popular breakfast cereals include: