The Endocrine Society
Organization
An organization that defines Vitamin D deficiency cutoff levels based on parathyroid hormone.
Mentioned in 3 videos
Videos Mentioning The Endocrine Society
![How Diet & Lifestyle Influence Aging & Brain Function [UCSF Healthy Heart Talk Oct. 2014]](https://i.ytimg.com/vi/iXglVzXOKYI/maxresdefault.jpg)
How Diet & Lifestyle Influence Aging & Brain Function [UCSF Healthy Heart Talk Oct. 2014]
FoundMyFitness
Established guidelines for Vitamin D levels, defining deficient (<20 ng/mL), inadequate (<30 ng/mL), and adequate (30-60 ng/mL) serum levels.

Micronutrients for Health & Longevity | Dr. Rhonda Patrick
Andrew Huberman
Organization that defines insufficient vitamin D levels as less than 30 nanograms per milliliter, based on aggregate studies of all-cause mortality.

COVID-19 Q&A #1 with Rhonda Patrick, Ph.D.
FoundMyFitness
An organization that defines Vitamin D deficiency cutoff levels based on parathyroid hormone.