Abstract
Introduction Considering that estradiol (E2) and n-3 polyunsaturated fatty acids (PUFAs) have roles in neurogenesis and in neurotransmission, we examined whether the association of PUFAs with incident depressive symptoms in postmenopausal women is modified by hormone therapy (HT) use or estrogen status. Methods Women (N = 1616) free of depressive symptoms at baseline (2000–2002) in the Multi-Ethnic Study of Atherosclerosis were classified by HT usage and quartiles of dietary eicosapentaenoic acid (EPA), docosahexaenoic acid (DHA), and the sum EPA + DHA. Women with serum E2 ≤0.073 nmol/L (sample median), were classified low on E2. Poisson regression was used to model incident depressive symptoms at examination 3 (2004-05), defined by the Center for Epidemiological Studies Depression Scale ≥16 or taking an antidepressant, first as a function of HT use and n-3 PUFA quartiles, and second, as a function of low E2 status and n-3 PUFA quartiles. Results Among HT non- users, positive, graded relationships (p-trends ≤ 0.003) were found between PUFAs and incident depressive symptoms. Compared to the lowest quartile, the adjusted risk ratios (RRs) for the highest were 2.10, 2.39, and 2.04 for EPA, DHA, and EPA + DHA, respectively. For HT users, no associations were seen. When analyses were run for E2 status, the RRs over quartiles of the PUFAs were positive and graded for low E2 women, but were null for High E2 women. Conclusions Higher intakes of DHA and EPA were associated with higher risk of depressive symptoms in nonusers of HT, contrary to hypothesis.
Original language | English (US) |
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Pages (from-to) | 26-35 |
Number of pages | 10 |
Journal | Psychoneuroendocrinology |
Volume | 75 |
DOIs | |
State | Published - Jan 1 2017 |
Funding
This work was supported by R01 HL074406, R01 HL074338 and contracts HHSN268201500003I, N01-HC-95159, N01-HC-95160, N01-HC-95161, N01-HC-95162, N01-HC-95163, N01-HC-95164, N01-HC-95165, N01-HC-95166, N01-HC-95167, N01-HC-95168 and N01-HC-95169 from the National Heart, Lung, and Blood Institute and by grants UL1-TR-000040 and UL1-TR-001079 from NCRR .
Keywords
- CES-D
- Depressive symptoms
- Estrogen
- Hormone therapy
- Menopause
- n-3 Fatty acids
ASJC Scopus subject areas
- Endocrine and Autonomic Systems
- Psychiatry and Mental health
- Biological Psychiatry
- Endocrinology
- Endocrinology, Diabetes and Metabolism