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Turk J Med Sci. 2014;44(5):792-8.

Investigating the effects of negative-calorie diet compared with low-calorie diet under exercise conditions on weight loss and lipid profile in overweight/obese middle-aged and older men.



Negative-calorie diets (NCDs) are among the popular dieting guides for weight loss; however, there is still little knowledge about this method. The present study aimed to determine the effects of a NCD supplemented with exercise on weight loss and lipid profile, and to compare its efficiency with low-calorie diets (LCDs) with exercise among elderly adult men with abnormal weight gain.


Participants included sedentary men (aged 45-75 years) who were overweight or obese (n = 37). They were randomly divided into 2 groups: a group with a NCD and exercise, and a group with a LCD with exercise. Of all 37 participants, 30 completed the treatment. Weight assessment parameters, including changes in weight and body composition and blood sample tests, were performed before and 3 months after intervention.


All parameters decreased significantly in both groups. Elevation in high-density lipoprotein (HDL) cholesterol levels (P < 0.001) was different between the 2 groups. The decline in the total cholesterol to HDL cholesterol ratio was greater in the LCD than the NCD group.


Contrary to expectations, both weight-loss diets were equally efficacious.

[Indexed for MEDLINE]

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