Americans' vitamin D levels are highest in August, lowest in February, study shows
- Sat 22 Jun 2013 07:46:PM
Researchers have found that vitamin D levels in the U.S. population peak in August and bottom out in February. The essential vitamin -- necessary for healthy bones -- is produced in the skin upon exposure to ultraviolet B rays from the sun.
Source: Americans' vitamin D levels are highest in August, lowest in February, study shows
Source: Americans' vitamin D levels are highest in August, lowest in February, study shows