My Vit D levels spiked 235% post HBOT. My Vit D has been stable for years ~40 ng/mL and th

Well SupportedHyperbaric oxygen therapy may improve vitamin D bioavailability and systemic efficiency.

Partially SupportedSerum Vitamin D levels approaching 100 ng/mL may offer potential benefits, but levels beyond 100 ng/mL are not considered ideal.

Partially SupportedBryan Johnson achieved serum vitamin D levels around 40 ng/mL with approximately 5000 IU daily intake for several years.

Partially SupportedButyrate, a metabolite of gut microbiota, can upregulate Vitamin D receptor (VDR) gene expression, leading to greater systemic Vitamin D binding and utilization.

Partially Supported