The Claim

A 12-week intervention of 20g/day protein supplementation has no differential effect on muscle strength outcomes when comparing plant-based protein sources to dairy-based protein sources in healthy older adults.

Source: Impact of increased protein intake in older adults: a 12-week double-blind randomised controlled trial.

What the research says

Supports is higher

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

Supports
71score
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.

Cause and effect
1 study reviewed
In plain English

In healthy older adults, taking 20 grams of plant-based protein daily for 12 weeks results in the same change in muscle strength as taking 20 grams of dairy-based protein daily for 12 weeks.

See the scientific wording

A 12-week intervention of 20g/day protein supplementation does not differentially affect muscle strength outcomes between plant-based and dairy-based protein sources in healthy older adults.

Why this might work

When older adults consume 20 grams of protein daily, whether from plants or dairy, their muscles build new proteins at the same rate, so their strength stays the same over time.

Supported mechanismbased on 1 study

What the research says

1 study
  1. Study: Impact of increased protein intake in older adults: a 12-week double-blind randomised controlled trial.

    In a study with older adults, drinking 20 grams of plant protein or dairy protein every day for 12 weeks made their grip strength improve about the same amount — neither was better than the other.

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

Fit Body Science verdict — we translate health claims into clear verdicts backed by peer-reviewed research.

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