Final answer:
The general dietary measure to include in a teaching plan for a child with type 1 diabetes mellitus is to limit intake of sugary foods and beverages, increase consumption of fruits and vegetables, include whole grains in the diet, and reduce portion sizes of meals.
Step-by-step explanation:
The general dietary measure to include in a teaching plan for a child with type 1 diabetes mellitus is to limit intake of sugary foods and beverages. This is because sugary foods can cause a spike in blood glucose levels, which can be dangerous for someone with diabetes. Instead, they should increase consumption of fruits and vegetables, which are low in sugar and high in essential nutrients. It is also important to include whole grains in the diet as they provide complex carbohydrates that are slowly absorbed, helping to stabilize blood sugar levels. Finally, it is advised to reduce portion sizes of meals to prevent overeating and help maintain a healthy weight.