A 2021 study carried out in Korea put these two strategies of getting vitamin D to the take a look at. Vitamin-D-deficient individuals got the selection between daylight publicity and a modest stage of oral vitamin D supplementation (1,000 I.U. of D3 taken each day, to be actual).
Serum 25(OH)D ranges (i.e., the blood biomarker for vitamin D standing) had been evaluated at the start and finish of the three-month examine to doc adjustments. The daylight publicity group had no vital enhance in common serum 25(OH)D ranges, whereas the oral supplementation group noticed a median serum enhance of 11 ng/ml on the finish of the three months.
In different phrases, vitamin D ranges elevated in individuals that took 1,000 I.U. of vitamin D3, whereas these uncovered to the solar skilled no vital adjustments. This confirmed what mindbodygreen has recognized all alongside: Vitamin D supplementation is the best and environment friendly technique of elevating vitamin D to ranges of sufficiency.*
Vitamin scientist Ashley Jordan Ferira, Ph.D., RDN, shared these extra insights: “This examine is efficacious for 2 causes. First, it demonstrates the efficacy of vitamin D supplementation in positively affecting vitamin D standing. Second, it confirms the pharmacokinetic research-backed phenomenon that predicts 1,000 I.U. of vitamin D3 will transfer the 25(OH)D “needle” by about 10 ng/ml in normal-weight adults. That predictable math is the rationale why we actually need much more vitamin D, round 5,000 I.U. or extra, to realize and preserve vitamin D sufficiency throughout life.”*
