June 24, 2011 (San Diego) -- A very low-calorie diet of 600 calories a day may be able to reverse type 2 diabetes, preliminary research suggests.
Eleven people who had been diagnosed with type 2 diabetes within the past four years slashed their calories for eight weeks, sticking to a diet of liquid diet drinks and non-starchy vegetables.
Three months after going off the diet, seven were free of diabetes.
Sound too tough to follow? Don't worry, the researchers aren't recommending the low-cal diet as a treatment for diabetes.
"We used the 600-calorie diet to test a hypothesis. What I can tell you definitively is that if people lose substantial weight by normal means, they will lose their diabetes," says study head Roy Taylor,MD, director of the Newcastle Magnetic Resonance Centre at Newcastle University in England.
The findings were published online by the journal Diabetologia and presented here at the annual meeting of the American Diabetes Association (ADA).
Nearly 26 million Americans have diabetes, about 95% of whom have type 2 diabetes. It develops when the body does not produce enough insulin and/or the insulin that is produced doesn't work properly. As a result, blood sugar levels shoot up.
Taylor tells WebMD that the very low-calorie diet reduced the amount of fat in the pancreas and liver, which allowed insulin production and function to return to normal.
After one week on the diet, participants' fasting blood sugar levels were no longer elevated, he says.
MRI scans showed that the fat levels in the pancreas fell from around 8% -- considered high -- to a normal 6%.
After eight weeks on the diet, their bodies were once again making sufficient insulin, essentially reversing their diabetes, Taylor says.
"Fat in the pancreas inhibits the action of beta cells in making insulin. The low-calorie diet got rid of this excess fat," he says.
The men and the women in the study weighed an average of 220 pounds at the start of the study and lost an average of 33 pounds over eight weeks. By three months later, they had regained an average of 6.5 pounds.
Low-Calorie Diets: Permanent Results?
David M. Kendall, MD, chief scientific and medical officer for the ADA, tells WebMD that it's been known for a while that "substantial calorie reduction can be very effective in rapidly improving diabetic control, especially in people who are obese.
"What is unique about this study is it looked at some of the mechanisms that underlie the rapid improvement," he says.
More research is needed to determine whether the low-cal diet results in a permanent reversal of diabetes, Taylor says. "We also have to figure out a more practical way for people to get these results -- that is, to get fat out of pancreas and keep it out," he says.
Get the latest Diabetes newsletter delivered to your inbox!
Your level is currently
If the level is below 70 and you are experiencing symptoms such as shaking, sweating or difficulty thinking, you will need to raise the number immediately. A quick solution is to eat a few pieces of hard candy or 1 tablespoon of sugar or honey. Recheck your numbers again in 15 minutes to see if the number has gone up. If not, repeat the steps above or call your doctor.
People who experience hypoglycemia several times in a week should call their health care provider. It's important to monitor your levels each day so you can make sure your numbers are within the range. If you are pregnant always consult with your health care provider.
Congratulations on taking steps to manage your health.
However, it's important to continue to track your numbers so that you can make lifestyle changes if needed. If you are pregnant always consult with your physician.
Your level is high if this reading was taken before eating. Aim for 70-130 before meals and less than 180 two hours after meals.
Even if your number is high, it's not too late for you to take control of your health and lower your blood sugar.
One of the first steps is to monitor your levels each day. If you are pregnant always consult with your physician.
Thank you for signing up for the WebMD Diabetes Newsletter!
You'll find tips and tricks as well as the latest news and research on Diabetes.
Did You Know Your Lifestyle Choices
Affect Your Blood Sugar?
Use the Blood Glucose Tracker to monitor
how well you manage your blood sugar over time.