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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
137 citations of this study as of Sept 2021

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

  • Effects of Full-Spectrum Lighting on Use of Classroom Library Center by Preschool Children: 1995? 2000? Oklahoma Thesis: attached at bottom of this page
  • A Literature Review of the Effects of Natural Light on Building Occupants NREL 2002: attached at bottom of this page
  • Children of Elementary School Age – A Case of Daylight Robbery by Hathaway in 2009
    Includes nice executive summary - by Warren E. Hathaway, John A. Hargreaves, Gordon W. Thompson, Dennis Novitsky
  • Full-spectrum fluorescent lighting: a review of its effects on physiology and health Review in Canada 2001 attached at bottom of this page

102 studies referenced this study as of Oct 2019
Daylighting in Schools: Improving Student Performance and Health at a Price Schools Can Afford. - 2000, FREE PDF
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 PDF admin 13 Sep, 2013 20:23 3.03 Mb 1254
1884 Full spectrum lighting - Review Canada 2001.pdf admin 26 Dec, 2012 12:52 162.40 Kb 1656
1883 Lit review natural light NREL 2002.pdf admin 26 Dec, 2012 12:28 1,020.16 Kb 1128
1882 Effects_of_FullSpectrum_Lighting_on_Use_of_Classroom_Library_Center_by_Preschool_Children.pdf admin 26 Dec, 2012 12:22 6.41 Mb 4250
1881 School UVB 7A2.jpg admin 26 Dec, 2012 03:37 33.34 Kb 3196
1880 School UVB 7A1.jpg admin 26 Dec, 2012 03:36 23.94 Kb 3176
1879 researchPaper_Daylight_Robbery.pdf PDF admin 26 Dec, 2012 03:36 73.43 Kb 1318
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