This independent study was slightly larger and twice as long, using a larger dose of D2 (50-?g/d vs 15-?g/d in the Journal of Nutritional Science study) and concluded Vitamin D2 supplementation was associated with a decrease in 25(OH)D3”
The most interesting result of our study, however, is the decrease in 25(OH)D3 after supplementation with vitamin D2. This was already evident after 4 weeks, and the decrease was significantly different from the seasonal decrease observed in the placebo group. A decrease in 25(OH)D3 after supplementation with vitamin D2 was reported earlier by Glendenning et al (22) in elderly hip fracture patients receiving 1000 IU/d for a period of 3 months, and also by Armas et al (26), who studied single doses of 50 000 IU of D2 and D3 in healthy men with a follow-up period of 28 days.
The Journal of Clinical Endocrinology & Metabolism
Gill Stannard is a naturopath and mentor, who has helping people feel better, since she graduated from SSNT in 1991. For almost 20 years she graced the 3RRR FM airwaves with her talk back show Health Trip. Gill is currently based in Sydney but works with people around the world. Book online to work with one of Australia's leading naturopaths, via Skype/zoom or in-person in Sydney.
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Health Q & A – are mushrooms a good source of Vitamin D?
This week Leah asks,
“I’m vegan and have read that mushrooms are a good source of Vitamin D. Is this true?”
View on Youtube.
Resources
Effect of supplementation with vitamin D2-enhanced mushrooms on vitamin D status in healthy adults, J Nutr Sci. 2013; 2: e29.
This study is co-funded by The Mushroom Council in the USA and the Australian Mushroom Growers Association.
Bioavailability of vitamin D(2) and D(3) in healthy volunteers, a randomized placebo-controlled trial, J Clin Endocrinol Metab. 2013 Nov;98(11):4339-45
This independent study was slightly larger and twice as long, using a larger dose of D2 (50-?g/d vs 15-?g/d in the Journal of Nutritional Science study) and concluded Vitamin D2 supplementation was associated with a decrease in 25(OH)D3”
How much Vitamin D do you need? Including supplement dosage and sun exposure.
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About the Author
Gill Stannard is a naturopath and mentor, who has helping people feel better, since she graduated from SSNT in 1991. For almost 20 years she graced the 3RRR FM airwaves with her talk back show Health Trip. Gill is currently based in Sydney but works with people around the world. Book online to work with one of Australia's leading naturopaths, via Skype/zoom or in-person in Sydney.Social Share
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