The Claim

In overweight postmenopausal women undergoing weight loss, a high-protein diet has no effect on overall physical function as measured by the Short Physical Performance Battery or 400-meter walk time, despite a potential improvement in handgrip strength.

Source: Impact of Protein Intake during Weight Loss on Preservation of Fat-Free Mass, Resting Energy Expenditure, and Physical Function in Overweight Postmenopausal Women: A Randomized Controlled Trial

What the research says

Supports is higher

Support is ahead, but a single strong opposing study can change this.

Supports
70score
Challenges
0score

These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.

Description
1 study reviewed
In plain English

For overweight women after menopause who are losing weight, eating more protein does not improve their ability to walk, stand, or move quickly, even if it may increase hand strength.

See the scientific wording

In overweight postmenopausal women, a high-protein diet during weight loss does not improve overall physical function as measured by the Short Physical Performance Battery or 400-meter walk time, despite a potential benefit in handgrip strength.

Why this might work

When overweight postmenopausal women lose weight on a high-protein diet, their muscles keep making more protein, which keeps their hand strength strong. But their legs and balance don't get better because the body doesn't increase muscle size or nerve signals in the legs, and fat loss doesn't reduce the extra load on the hips and knees enough to improve walking or balance.

Supported mechanismbased on 1 study

What the research says

1 study
  1. Study: Impact of Protein Intake during Weight Loss on Preservation of Fat-Free Mass, Resting Energy Expenditure, and Physical Function in Overweight Postmenopausal Women: A Randomized Controlled Trial

    In overweight women over 50 losing weight, eating more protein didn’t help them walk faster or balance better, even though it helped keep their hand strength from getting weaker.

Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies

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Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.