Fat in Weight Loss Diet - Study - Part
2
For Part 1, see Fat
& Weight Loss Diets
Weight Loss Diets Study - Results
Four studies were included at the six month follow-up, five studies at
the 12 month follow-up and three studies at the 18 month follow-up. There
was no significant difference in weight loss between the two groups at
six months (WMD 1.7 kg, 95 percent CI -1.4 to 4.8 kg). The weighted sum
of weight loss in the low fat group was -5.08 kg (95 percent CI -5.9 to
-4.3 kg) and in the control group was -6.5 kg, (95 percent CI -7.3 to
-5.7 kg). There was no significant difference in weight loss between the
two groups at 12 months (WMD 1.1 kg, 95 percent CI -1.6 to 3.8 kg). The
weighted sum of weight loss in the low fat group was -2.3 kg (95 percent
CI -3.2 to -1.4 kg) and in the control group was -3.4 kg (95 percent CI
-4.2 to -2.6 kg). There was no significant difference in weight loss between
the two groups at 18 months (WMD 3.7 kg, 95 percent CI - 1.8 to 9.2).
The weighted sum of weight loss in the control group was -2.3 kg (95 percent
CI -3.5 to -1.2 kg) and in the low fat group there was a weight gain of
0.1 kg (95 percent CI -0.8 to 1 kg). There was significant heterogeneity
in the results for weight loss at six months and 12 months. Apart from
one study which showed a slight but statistically significant difference
in total cholesterol in the low fat group at one year follow-up, there
were no significant differences between the dietary groups for other outcome
measures such as serum lipids, blood pressure and fasting plasma glucose.
Studies measuring other factors such as perceived wellness and quality
of life reported conflicting results.
Weight Loss Diets Study - Conclusions
The review suggests that fat-restricted diets are no better than calorie
restricted diets in achieving long term weight loss in overweight or obese
people. Overall, participants lost slightly more weight on the control
diets but this was not significantly different from the weight loss achieved
through dietary fat restriction and was so small as to be clinically insignificant.
Source: Pirozzo S, Summerbell C, Cameron
C, Glasziou P. School of Population Health, University of Queensland,
Herston Rd, Herston, Queensland, Australia, 4006. 2002
Weight Loss & Obesity Reduction
The science of weight loss and weight management is constantly evolving,
along with research into diet modification, types of gastrointestinal
weight loss surgery and weight loss drugs. At present, however, a balanced
diet plan combined with a regular fitness program remains the favored
weight control strategy of most weight loss experts. Return to Weight Loss Data
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