High-fat diet cuts blood sugar level in diabetics
Washington: Food with a lot of fat and few carbohydrates could have a better effect on blood sugar levels and blood lipids for people with Type 2 diabetes, a new study has revealed.
The finding from the Linkoping University comes as a surprise as diabetic patients are usually advised to keep a low-fat diet.
The two-year dietary study led by Hans Guldbrand, general practitioner, and Fredrik Nystrom, professor of Internal Medicine included 61 patients of Type 2, or adult-onset diabetes.
They were randomized into two groups, where they followed either a low-carbohydrate (high fat) diet or a low-fat diet.
In both groups, the participants lost approximately 4 kg on average. In addition, a clear improvement in the glycaemic control was seen in the low-carbohydrate group after six months.
Their average blood sugar level dropped from 58.5 to 53.7 mmol/mol (the unit for average blood glucose). This means that the intensity of the treatment for diabetes could also be reduced, and the amounts of insulin were lowered by 30percent.
Despite the increased fat intake with a larger portion of saturated fatty acids, their lipoproteins did not get worse. Quite the contrary – the HDL, or ‘good’ cholesterol, content increased on the high fat diet.
No statistically certain improvements, either of the glycaemic controls or the lipoproteins, were seen in the low-fat group, despite the weight loss.
“You could ask yourself if it really is good to recommend a low-fat diet to patients with diabetes, if despite their weight loss they get neither better lipoproteins nor blood glucose levels,” Nystrom said.
In the low-carbohydrate diet, 50 percent of the energy came from fat, 20 percent from carbohydrates, and 30 percent from protein. For the low-fat group the distribution was 30 percent from fat, 55-60 percent from carbohydrates, and 10-15 percent from protein, which corresponds to the diet recommended by the Swedish National Food Agency.
The participants were recruited from two primary health care centres and met for four group meetings during the first year of the study. All 61 participants remained in the study for the follow-up.
“In contrast to most other studies of this type, we lost no patients at all, which vouches for the good quality of our data,” Guldbrand added.
The results are being published in the prestigious journal Diabetologia.
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