Ignite Creation Date:
2024-05-05 @ 5:31 PM
Last Modification Date:
2024-10-26 @ 9:32 AM
Study NCT ID:
NCT00473317
Status:
COMPLETED
Last Update Posted:
2008-04-01
First Post:
2007-05-11
Brief Title:
Sunlight Exposures Effect on Serum Vitamin D Levels
Sponsor:
Creighton University
Organization:
Creighton University
Study Overview
Official Title:
Sunlight Exposures Effect on Serum Vitamin D Levels
Status:
COMPLETED
Status Verified Date:
2008-03
Last Known Status:
None
Delayed Posting:
No
If Stopped, Why?:
Not Stopped
Has Expanded Access:
False
If Expanded Access, NCT#:
N/A
Has Expanded Access, NCT# Status:
N/A
Acronym:
None
Brief Summary:
When people eat a meal some but not all of the calcium in that meal is absorbed that is moved into the bloodstream When the skin is exposed to sunlight during summer months Vitamin D is made there and then modified into more active forms by the liver and kidneys These more active forms of Vitamin D improve calcium absorption Many adults living in the US have little or no sun exposure and are low in Vitamin D We know that specific wavelengths of sunlight called Ultraviolet-B cause Vitamin D to be made in the skin
Detailed Description:
At the beginning of the study we will measure your height weight skin color and draw blood to measure your blood levels of Vitamin D and 25-hydroxyvitamin D Each subject will wear a swimming suit and be exposed to sunlight for 30 minutes total 15 minutes lying on back 15 minutes lying on stomachWe will draw blood for Vitamin D and 25-hydroxyvitamin D on days 1235 and 7 after sunlight exposure There will be six blood draws for a total of 102 cc of blood drawn about 3 ½ teaspoons drawn each time
Study Oversight
Has Oversight DMC:
None
Is a FDA Regulated Drug?:
None
Is a FDA Regulated Device?:
None
Is an Unapproved Device?:
None
Is a PPSD?:
None
Is a US Export?:
None
Is an FDA AA801 Violation?:
None