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Introduction:
Low-carbohydrate diet is effective in improving blood glucose parameters, glycated hemoglobin A1c, weight, and waist circumference. The effectiveness of this diet is well accepted in America and the United Kingdom but in Nepal due to many preexisted misbeliefs regarding carbohydrates, we still have a carbohydrate-based diet for type 2 diabetes mellitus.

Material and Methods:
Fifty-four newly diagnosed type 2 diabetes mellitus without any treatment were selected for solely low-carbohydrate diet intervention (<130g carbohydrate) in the endocrinology unit of Tribhuvan University Teaching Hospital, Kathmandu from March to August 2019. Antidiabetic medications were not used. Individualized diet plans and repeated counseling were given and followed for 3 months. Blood glucose (fasting and postprandial),
glycated hemoglobin A1c, weight, and waist circumference were compared at entry and 3 months. Statistical analysis was done using SPSS version 21.

Results:
The mean ± SD age was 44.77 ± 10.32. The mean body weight decreased by 4.52 ± 1.79 kg (p<0.001), mean waist circumference decreased by 7.85±0.72 cm (p<0.001), mean fasting blood glucose decreased from 10.44±3.52 mmol/L to 6.18±1.02 mmol/L (p<0.001), mean postprandial blood glucose decreased from 16.76±8.26 mmol/L to 8.26±1.66 mmol/L (p<0.001) and mean glycated hemoglobin A1c decreased by 2.38 ± 1.49 % (p<0.001) after 3
months of low-carbohydrate diet intervention.

Conclusions
The use of a low-carbohydrate diet may effectively produce glycemic control and decrease glycated hemoglobin A1c without medication in newly diagnosed type 2 diabetes mellitus. Additionally, this diet may also help to lower weight and waist circumference in newly diagnosed type 2 diabetes mellitus.