Final answer:
In insulin-dependent diabetes mellitus (IDDM), intervention with insulin is necessary. However, in non-insulin dependent diabetes mellitus (NIDDM), intervention with insulin may not be necessary initially but may be required if other treatments are not effective.
Step-by-step explanation:
In insulin-dependent diabetes mellitus (IDDM or type 1 diabetes), intervention with insulin is necessary. This is because in IDDM, the pancreas cannot produce enough insulin, so synthetic insulin must be administered through injections or infusion.
In non-insulin dependent diabetes mellitus (NIDDM or type 2 diabetes), intervention with insulin may not be necessary initially. In type 2 diabetes, the body cells cannot use insulin properly, but medications and lifestyle changes can help manage blood glucose levels. However, if the disease cannot be controlled by these means, insulin injections may be prescribed.