The Claim

Low levels of copper, iron, and vitamin B12 are associated with premature hair graying in humans, as these micronutrients may play a role in the biological processes governing hair pigmentation.

Source: Adequate Nutrition and Premature Hair Graying: A Review of Literature

What the research says

Roughly balanced

Support and challenge are close. The picture may shift as more studies come in.

Supports
1score
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

People who go gray too early might have low levels of copper, iron, or vitamin B12—these nutrients might help keep hair its natural color.

See the scientific wording

Low levels of copper, iron, and vitamin B12 are associated with premature hair graying in humans, as these micronutrients may play a role in the biological processes governing hair pigmentation.

What the research says

1 study

  1. Study: Adequate Nutrition and Premature Hair Graying: A Review of Literature

    This study looked at many other studies and found that people with less copper, iron, or B12 in their bodies tend to get gray hair earlier, so it supports the idea that these nutrients help keep hair colored.

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.