The Claim

Daily supplementation with 8000 IU of vitamin D for 12 weeks significantly reduces android fat mass in vitamin D-deficient young men undergoing resistance training, whereas administration of a placebo does not produce this reduction.

Source: Vitamin D supplementation does not enhance resistance training-induced gains in muscle strength and lean body mass in vitamin D deficient young men

What the research says

Supports is higher

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

Supports
47score
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

If young men who don’t have enough vitamin D take a high-dose vitamin D pill every day for 12 weeks while working out, they lose belly fat — but if they take a fake pill instead, their belly fat doesn’t change.

See the scientific wording

Vitamin D supplementation at 8000 IU daily for 12 weeks significantly reduces android fat mass in vitamin D-deficient young men undergoing resistance training, while placebo does not.

What the research says

1 study
  1. Study: Vitamin D supplementation does not enhance resistance training-induced gains in muscle strength and lean body mass in vitamin D deficient young men

    The study gave young men with low vitamin D either a high-dose supplement or a sugar pill while they lifted weights. Only the group taking vitamin D lost belly fat — exactly what the claim says.

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.