4 times fewer with vitamin D deficiency in just 4 years ( Connecticut) – March 2016

A Four-Year Trend in Serum 25-Hydroxyvitamin D Levels in Western Connecticut.

Conn Med. 2016 Mar;80(3):133-7.
Belsky J, Sena S, Baqai S, Dilello LC, Petrini JR.

Table 3. % Distribution of 25-OH Vitamin D Levels, 2009–2012

Year < 10
ng/mL
< 20
ng/mL
< 30
ng/mL
> 100
ng/mL
2009 1.4517.651.7.14
2010 .6814.148.6.24
2011 .4412.946.2.10
2012 .309.939.0.19


OBJECTIVE:
This study describes the trends in blood vitamin D levels in a regional population from 2009-2012 through a cross-sectional study design.

METHODS:
Over a four-year period (2009-2012), serum levels of 25-hydroxyvitamin D [25(OH)D] have been measured using an automated enzyme immunoassay with a steadily increasing number of tests performed each year. A total of 54700 tests were performed during this period, with a 90% increase in annual tests ordered.

RESULTS:
Mean and median serum levels of 25(OH) D showed statistically significant increases during this period. Those with 25(OH)D levels below 10 ng/mL represented 1.45% of the subjects in 2009 and 0.3% in 2012. The decrease in the proportion of subjects with 25(OH)D levels below 20 ng/mL and below 30 ng/mL was greatest out of all the proportioned subjects. Mean and median 25(OH)D levels increased with age in males and females.

CONCLUSION:
These results likely reflect increased health awareness in Western Connecticut compared with national surveys showing a temporal decrease in 25(OH)D levels.

PMID: 27169294
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Nice to see that some people are making modest increases in Vitamin D levels

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