The Claim

In endurance-trained adults, higher intake of animal-derived protein is associated with greater tibial bone strength (SSIp) at the 38% and 66% sites and increased calf muscle cross-sectional area, independent of training volume and calcium intake.

Source: Dietary Protein Intake and Its Associations With Bone Properties Using Peripheral Quantitative Computed Tomography and Dual-Energy X-Ray Absorptiometry in Endurance-Trained Individuals

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.

Correlation
1 study reviewed
In plain English

Among endurance-trained adults, consuming more animal-based protein is linked to stronger shin bones at two specific points and larger calf muscles, even when accounting for how much they train and how much calcium they consume.

See the scientific wording

In endurance-trained adults, higher intake of animal-derived protein is associated with greater tibial bone strength (SSIp) at the 38% and 66% sites and increased calf muscle cross-sectional area, independent of training volume and calcium intake, suggesting a potential role for animal protein sources in supporting musculoskeletal structure in athletes.

Why this might work

Eating more animal protein gives the body more building blocks for making muscle and bone tissue. These building blocks increase muscle size, which puts more force on the shin bone during movement. That force triggers bone cells to lay down more dense, strong bone. At the same time, the protein boosts a hormone that tells bone cells to build more bone and reduces bone breakdown. The result is stronger shin bones and bigger calf muscles.

Supported mechanismbased on 1 study

What the research says

1 study

  1. Study: Dietary Protein Intake and Its Associations With Bone Properties Using Peripheral Quantitative Computed Tomography and Dual-Energy X-Ray Absorptiometry in Endurance-Trained Individuals

    Endurance athletes who ate more protein from meat and dairy had stronger shin bones and bigger calf muscles, even when researchers accounted for how much they trained or how much calcium they consumed. This suggests animal protein may help build stronger legs in athletes.

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.