High-monounsaturated fat diet-induced obesity and diabetes in C57BL/6J mice.
A high-monounsaturated fat diet has been proposed as a palatable alternative to a high-carbohydrate diet in diabetic patients, but it is unknown whether a higher intake of monounsaturated fat induces obesity and diabetes, as usually observed with other types of fat. To answer this question, C57BL/6J mice were divided into three groups: the first group was given a high-carbohydrate diet, and the other two groups were given a high-monounsaturated fat diet (60% of total energy) as olive oil or synthetic triolein for 4 months. It has been previously reported that the C57BL/6J mouse has a genetic predisposition for intraabdominal obesity and non-insulin-dependent diabetes mellitus (NIDDM) by high-polyunsaturated fat (n-6) feeding. Although there were no significant differences in energy intake and fat absorption among these three groups, compared with the high-carbohydrate diet, both high-monounsaturated fat diets produced hyperglycemia, obesity, and triglyceride accumulation in the liver and skeletal muscle. These data indicate that the recently recommended high-monounsaturated fat diet might induce obesity and diabetes.
Tsunoda
N
N
Division of Clinical Nutrition, National Institute of Health and Nutrition, Tokyo, Japan.
Ikemoto
S
S
Takahashi
M
M
Maruyama
K
K
Watanabe
H
H
Goto
N
N
Ezaki
O
O
D000818:Animals; D003920:Diabetes Mellitus / Q000209:etiology*; D004040:Dietary Carbohydrates / Q000008:administration & dosage / Q000494:pharmacology; D004042:Dietary Fats, Unsaturated / Q000008:administration & dosage* / Q000494:pharmacology; D005260:Female; D006943:Hyperglycemia / Q000209:etiology; D008099:Liver / Q000378:metabolism; D051379:Mice; D008810:Mice, Inbred C57BL; D018482:Muscle, Skeletal / Q000378:metabolism; D009765:Obesity / Q000209:etiology*; D014280:Triglycerides / Q000378:metabolism
D004040:Dietary Carbohydrates; D004042:Dietary Fats, Unsaturated; D014280:Triglycerides