The famous line about “April is the cruellest month’ definitely applies to depression. When the weather lifts and spring has sprung, we should feel good. However, when depression is involved, that may not be the case.
Vitamin D levels are at their lowest along about April and May because of lack of sunshine but there may be other nutritional factors in play.
A study linking genes to expression of depression may give clues to more targeted orthomolecular (nutritional) treatments.