Daniel 1:13

1:13 Then compare our appearance with that of the young men who are eating the royal delicacies; deal with us in light of what you see.”

Daniel 1:15

1:15 At the end of the ten days their appearance was better and their bodies were healthier than all the young men who had been eating the royal delicacies.

Daniel 6:18

6:18 Then the king departed to his palace. But he spent the night without eating, and no diversions were brought to him. He was unable to sleep.