High fibre or high protein?

A recent study conducted in New Zealand compared two low-fat weight loss diets. The first was high infibre-rich (minimally processed cereals & legumes) and the second was highin protein.

The high fiber (HF) diet recommended a

  • 1 x 100g serving of lean protein foods,
  • 6 x servings of wholegrain breads, cereals or grains perday and
  • 1 x serving of legumes.

The food group breakdown of the HF diet was:

Carbohydrates

Dietary Fibre

Fat

Protein

50%

>35g

20%

30%

The high protein (HP) diet recommended

  • 3 x 100g servings of lean protein foods
  • 3 x servings of breads, cereals or grains per day.

The food group breakdown of the HF diet was:

Carbohydrates

Dietary Fibre

Fat

Protein

40%

not recorded

30%

30%

83 women classified as overweight or obese were divided into either the HP or HF group. Energy intakes were reduced in order to achieve weight loss of between 0.5 and 1 kg per week. The study was conducted for 8 weeks and the women were aged between 18 and 65.

Findings

Participants in both the HP and HF groups lost weight, reduced total body fat,lowered their waist size as well as improved their total and LDLcholesterol and blood pressure.

However participants on the HP diet lost more body weight &body fat along with seeing a greater reduction in blood pressure.

Conclusion

A realistic high protein weight-reducing diet was associated with greater fat loss and lower blood pressure when compared with a high carbohydrate, high fiber diet in high risk overweight and obese women

Reference: Nutritional Journal

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