tl;dr, sleep deprivation can help quickly alleviate symptoms of major depression but symptoms return after a few days. Author thinks that using light therapy ma

tl;dr, sleep deprivation can help quickly alleviate symptoms of major depression but symptoms return after a few days. Author thinks that using light therapy may extend the symptom relief, long enough for antidepressant meds to start working. Wouldn't bother reading the article, honestly, it doesn't go into details on any of this.