An open trial of morning light therapy for treatment of antepartum depression
Am J Psychiatry. 2002 Apr;159(4):666-9
After 3 weeks of treatment (using a 10,000 lux bright light for 60 minutes a day), mean depression ratings improved by 49%. Benefits were seen through 5 weeks of treatment. There was no evidence of adverse effects of light therapy on pregnancy. These data provide evidence that morning light therapy has an antidepressant effect during pregnancy. A randomised, controlled trial is warranted to test this alternative to medication.
About 5% of pregnant women suffer from major depression. Whilst anti-depressants work well, for obvious reasons, it would be desirable to find an equally effective treatment that would not expose the developing baby to drugs.