The Claim

Vitamin D supplementation at 2000 IU/day for 12 weeks results in a greater increase in serum 25(OH)D levels in men consuming a high-fat diet compared to those consuming a high-carbohydrate diet, with reported increases of 95% and 58%, respectively.

Source: The Combination of a Diversified Intake of Carbohydrates and Fats and Supplementation of Vitamin D in a Diet Does Not Affect the Levels of Hormones (Testosterone, Estradiol, and Cortisol) in Men Practicing Strength Training for the Duration of 12 Weeks

What the research says

Supports is higher

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

Supports
48score
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 men taking 2000 IU of vitamin D daily for 12 weeks, blood levels of vitamin D rise more when their diet is high in fat than when it is high in carbohydrates.

See the scientific wording

Vitamin D supplementation at 2000 IU/day for 12 weeks increases serum 25(OH)D levels more in men consuming a high-fat diet (95% increase) than in those consuming a high-carbohydrate diet (58% increase), suggesting dietary fat content may enhance vitamin D absorption or bioavailability.

What the research says

1 study

  1. Study: The Combination of a Diversified Intake of Carbohydrates and Fats and Supplementation of Vitamin D in a Diet Does Not Affect the Levels of Hormones (Testosterone, Estradiol, and Cortisol) in Men Practicing Strength Training for the Duration of 12 Weeks

    This study found that men who ate more fat and took vitamin D supplements saw a bigger boost in their vitamin D levels than those who ate more carbs — suggesting fat helps the body absorb vitamin D better.

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.