This saying expresses a common fact: people eat whole grains, and whole grains contain nutrients needed by the human body, and may also contain some harmful substances, such as pesticides and heavy metals. Therefore, people may get sick from eating whole grains.

The core of this logical relationship is that whole grains are the main source of people's daily diet, and food safety issues are also closely related to people's health. Therefore, food safety issues need to attract people's attention, and safe and reliable foods should be chosen to ensure good health.