Perimenstrual syndrome and postpartum depression are popularly known to be caused by endocrine changes. However, research has not provided compelling evidence that hormonal changes underlie the reported changes in mood. What evidence is necessary before the statement "Lack of steroid hormones causes mood depression" can be asserted?

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The Answer of Perimenstrual syndrome and postpartum depression are popularly known to be caused by endocrine changes. However, research has not provided compelling evidence that hormonal changes underlie the reported changes in mood. What evidence is necessary before the statement "Lack of steroid hormones causes mood depression" can be asserted?

Perimenstrual Syndrome and Postpartum Depression Are Popularly Known to Be