The Claim
In vitamin D-deficient young males, six weeks of resistance training combined with daily supplementation of 25 grams of whey protein and 4000 IU of vitamin D3 causes significant increases in serum vitamin D levels, with average increases ranging from 5.7 to 11.9 ng/mL, resulting in most participants achieving sufficient vitamin D status.
What the research says
Supports is higher
Support is ahead, but a single strong opposing study can change this.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
If young guys who don’t have enough vitamin D take 4000 IU of vitamin D and 25 grams of whey protein every day while doing strength training for six weeks, their vitamin D levels go up enough to get into a healthy range.
See the scientific wording
Six weeks of resistance training combined with 25 grams of whey protein and 4000 IU of vitamin D3 daily causes significant increases in serum vitamin D levels in vitamin D-deficient young males, with average increases of 5.7–11.9 ng/mL, bringing most participants into sufficient range.
What the research says
1 studyThe study gave young men whey protein and vitamin D every day for six weeks while they did strength training, and their vitamin D levels went up—just like the claim says.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.