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UVB added in classroom reduced cavities, increased height, increased academics. etc

Effects of school lighting on physical development and performance

Highlights of fascinating 1995 study

  • 1 year Experiment in Canada, 12 year old children
  • 4 different kinds of overhead lighting – including 2 which had a small amount of UVB
  • The UVB added per child for the entire day was = 10 minutes of noontime summer sun at that latitude
  • Results for UVB vs other groups:
    1 / 5 the # of cavities
    better attendance
    grew taller
    gained more weight (a good thing at that point in life)
    lowest increase in body fat
    had better test scores at the end of the year

 Download the PDF from VitaminDWiki

The academic publication has far less detail
Hathaway WE. Effects of School Lighting on Physical Development and School Performance.
The Journal of Educational Research Vol. 88, No. 4, Mar. – Apr., 1995

Here is a summary table from the PDF


Comment by VitaminDWiki

This was not a random controlled trial, but fascinating anyway
Expect that UVB can be added safely to office/classroom at very low cost
Need to calculate how much equivalent vitamin D this UVB produces - suspect it is in the range of 200-500 IU per child
Hardly any "full spectrum" bulbs emit UVB
Daylighting does not contain UVB - it works on getting full VISIBLE spectrum without 120Hz oscillations

See also VitaminDWiki

Intervention AND Dental

Newer research

150 citations of this study as of Dec 2023

Short url for this page = http://is.gd/uvb_room

UVB added in classroom reduced cavities, increased height, increased academics. etc        
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Attached files

ID Name Comment Uploaded Size Downloads
2999 study-into-the-effects-of-light 1992, 68 pg.pdf admin 13 Sep, 2013 3.03 Mb 1479
1884 Full spectrum lighting - Review Canada 2001.pdf admin 26 Dec, 2012 162.40 Kb 2097
1883 Lit review natural light NREL 2002.pdf admin 26 Dec, 2012 1,020.16 Kb 1354
1882 Effects_of_FullSpectrum_Lighting_on_Use_of_Classroom_Library_Center_by_Preschool_Children.pdf admin 26 Dec, 2012 6.41 Mb 4857
1881 School UVB 7A2.jpg admin 26 Dec, 2012 33.34 Kb 3809
1880 School UVB 7A1.jpg admin 26 Dec, 2012 23.94 Kb 3822
1879 researchPaper_Daylight_Robbery.pdf admin 26 Dec, 2012 73.43 Kb 1702