For the Diabetes Control and Complications Trial (DCCT), researchers followed 1,441 people with type 1 diabetes for several years. Half of the people continued standard diabetes treatment while the other half followed an intensive-control program. Those on intensive control kept their blood glucose levels lower than those on standard treatment, although the average level was still above normal.
The results? Here's what they found in the tight-control group as compared with the standard-treatment group:
- Diabetic eye disease started in only one-quarter as many people.
- Kidney disease started in only half as many people.
- Nerve disease started in only one-third as many people.
- Far fewer people who already had early forms of these three complications got worse.