Some, but not all, studies have indicated that depression during pregnancy increases the risk of preterm birth. A recent study published in the American Journal of Obstetrics and Gynecology is one of the largest to address this question.
Recent reports suggest that people with lower folate levels are at higher risk of major depression or may experience more severe depressive symptoms. Other studies indicate that in folate deficient patients, antidepressants may be less effective or may take longer to take effect. In addition, some clinical trials have shown that folate may have a therapeutic effect on depression, either when taken alone or in combination with an antidepressant.
The National Comorbidity Survey estimates that by the time women reach midlife, approximately 23% have experienced at least one episode of major depression and 30% have been diagnosed with an anxiety disorder. Depression and anxiety disorders are each associated with impaired functioning and lower quality of life (QOL). There is also some data to suggest that, even after a depressive episode resolves, those with a history of a affective illness have a lower quality of life than those without histories of depression, with impairment in social and interpersonal functioning.
Menstrual problems are common among premenopausal women and become more frequent with increasing reproductive age, especially just before and during perimenopause. In the Study of Women's Health Across the Nation, a multisite study of menopause and aging, information regarding menstrual history was collected in a total of 934 premenopausal and early perimenopausal women between the ages of 42 and 52. History of major depression was associated with an increased likelihood of heavy bleeding (odds ratio, 1.89), adjusting for recent major depression, menopause status, and other confounding factors. History of depression was not associated with other abnormal bleeding or premenstrual symptoms. Future longitudinal studies are needed to explore why past depression increases the likelihood of subsequent heavy menstrual bleeding in midlife women. One possibility is that irregular fluctuations in estrogen levels may be responsible for both abnormal menstrual bleeding, as well as the dysregulation of neurotransmitter systems that mediate depressive symptoms.
Depression during pregnancy is common and has major health implications for the mother, the fetus and the family. On this website, we have reviewed numerous treatments for affective disorders in pregnancy, including psychotropic medications and several forms of psychotherapy. We have not had much data to support the use of light therapy for antepartum depression, yet I often discuss light therapy as a potential adjunctive treatment for patients with a seasonal component to their depression. A recent study, published by Wirz-Justice and colleagues in the Journal of Clinical Psychiatry, provides evidence that light therapy may be a useful non-pharmacologic treatment for women who suffer from depression during pregnancy(1).
Over the last decade, the number of reproductive-age women treated for depression has increased significantly. Given the incomplete information available regarding the reproductive safety of many antidepressant medications, many women choose to discontinue pharmacologic treatment during pregnancy. However, several studies estimate that about 10 to 15% of women suffer from depression during pregnancy (O'Hara et al, 1990; Evans et al, 2001). A recent study from the Center for Women's Mental Health indicates that the risk for depression is particularly high among women with histories of major depression (Cohen et al, 2006).
Postpartum depression (PPD) is relatively common, occurring in about 10 to 15% of women after delivery. Several reports have documented the efficacy of selective serotonin reuptake inhibitors (SSRIs) sertraline, fluoxetine, and fluvoxamine for the treatment of this disorder. In a recent report, Cohen and colleagues have demonstrated the efficacy of venlafaxine for the treatment of PPD.
