, Volume 116, Issue 4, pp 515–516 | Cite as

1,25 (OH)2 vitamin D3 levels in seasonal affective disorder: Effects of light

  • Dan A. Oren
  • Jay Schulkin
  • Norman E. Rosenthal


1,25 (OH)2 vitamin D3 levels were assessed in nine females and six males with winter seasonal affective disorder and in 15 age- and gender-matched controls in winter during periods with and without treatment with light therapy. No difference was found between groups or across conditions, though wide variations within each group make the presence of a type II error possible.

Key words

Vitamin D Blood Seasonal affective disorder Depression Winter 


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Copyright information

© Springer-Verlag 1994

Authors and Affiliations

  • Dan A. Oren
    • 1
  • Jay Schulkin
    • 1
  • Norman E. Rosenthal
    • 1
  1. 1.Clinical Psychobiology and Neuroendocrinology BranchesNational Institute of Mental HealthBethesdaUSA

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