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Diabetes Res Clin Pract. 2004 Feb;63(2):103-12.

Long-term effects of a reduced fat diet intervention on cardiovascular disease risk factors in individuals with glucose intolerance.

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  • 1Department of Community Health, University of Auckland, Private Bag 92019, Auckland, New Zealand.


The long-term effects on cardiovascular disease risk factors of a reduced fat (RF), ad libitum diet were compared with usual diet (control, CD) in glucose intolerance individuals. Participants were 136 adults aged > or =40 years with 'glucose intolerance' (2h blood glucose 7-11.0 mmol/l) detected at a Diabetes Survey who completed at 1 year intervention study of reduced fat, ad libitum diet versus usual diet. They were re-assessed at 2, 3 and 5 years. Main outcome measures were blood pressure, serum concentrations of total cholesterol, HDL and LDL cholesterol, total cholesterol:HDL ratio, triglycerides and body weight. The reduced fat diet lowered total cholesterol (P<0.01), LDL cholesterol (P< or =0.05), total cholesterol:HDL ratio (P< or =0.05), body weight (P<0.01) and systolic blood pressure (P< or =0.05) initially and diastolic blood pressure (P<0.01) long-term. No significant changes occurred in HDL cholesterol or triglycerides. In the more compliant 50% of the intervention group, systolic and diastolic blood pressure levels and body weight were lower at 1, 2 and 3 years (P<0.05). It was concluded that a reduced fat ad libitum diet has short-term benefits for cholesterol, body weight and systolic blood pressure and long-term benefits for diastolic blood pressure without significantly effecting HDL cholesterol and triglycerides despite participants regaining their lost weight.

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