To reverse this trend , Kellogg 's believed it had to convince adults to eat more cereal .
As the baby - boom market aged during the early 1980s , Kellogg 's saw its market share decline dramatically .
To reverse this trend , Kellogg 's believed Kellogg had to convince adults to eat more cereal .
As the baby - boom market aged during the early 1980s , Kellogg 's saw its market share decline dramatically .