The Claim

In older U.S. adults aged 60 and older, average protein intake of 0.93 g/kg/day is below the expert-recommended threshold of 1.0–1.2 g/kg/day for muscle maintenance, and approximately 58% of this population consumes less than 1.0 g/kg/day, indicating widespread suboptimal protein intake.

Source: Association between usual protein intake and muscle function in older U.S. adults: a target-trial emulation using NHANES 2011–2018

What the research says

Supports is higher

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

Supports
44score
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

About 58% of adults in the U.S. aged 60 and older eat less protein than the minimum amount experts recommend to maintain muscle, with their average intake at 0.93 grams per kilogram of body weight per day, below the recommended 1.0 to 1.2 grams per kilogram.

See the scientific wording

In older U.S. adults aged 60 and older, protein intake averaging 0.93 g/kg/day is below the proposed threshold of 1.0–1.2 g/kg/day recommended by expert groups for muscle maintenance, and approximately 58% of this population consumes less than 1.0 g/kg/day, indicating widespread suboptimal intake that may contribute to functional decline.

Why this might work

When older adults eat less protein than needed, their muscles receive fewer building blocks, which slows down muscle repair and growth. At the same time, low protein intake is linked to higher levels of body-wide inflammation, which further blocks muscle repair. Over time, this causes muscles to weaken and shrink, making it harder to move and stay independent.

Supported mechanismbased on 1 study

What the research says

1 study

  1. Study: Association between usual protein intake and muscle function in older U.S. adults: a target-trial emulation using NHANES 2011–2018

    The study found that most older U.S. adults eat about 0.93 grams of protein per kilogram of body weight each day — less than the 1.0–1.2 grams experts recommend for keeping muscles strong. This matches the claim that many older people aren’t getting enough protein to stay mobile.

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

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