If they can not do either of these, they need to use what is called food exchanges . They need to try to eat enough soft food and liquid food exchanges that take the place of the fruits and bread that they usually eat. Some choices are water, diet soda, and tea without any sugar. When diabetics are sick, they need to check their blood sugar level at least every four hours. If their blood sugar is 240 or higher, it is a good idea for them to check their urine for ketones.
Weight changes Changes in a diabetics' weight while they are sick is a sign of high blood sugar.
They need to check their temperature every morning and every night because a high temperature may be a sign of infection. If they have severe diarrhea. If they lose five pounds or more without trying.