UVB-exposed wheat germ oil increases serum 25-hydroxyvitamin D without improving overall vitamin D status: a randomized controlled trial.

Purpose: This study investigated whether UVB-exposed wheat germ oil (WGO) is capable to improving the vitamin D status in healthy volunteers.

Methods: A randomized controlled human-intervention trial in parallel design was conducted in Jena (Germany) between February and April. Ultimately, 46 healthy males and females with low mean 25-hydroxyvitamin D (25(OH)D) levels (34.