Depression in Parkinson’s Disease: A Double-Blind, Randomized, Placebo-Controlled Pilot Study of Omega-3 Fatty-Acid Supplementation
Abstract
Background Effect of fish oil supplementation in parkinsonian patients with depression measured by Montgomery-Asberg Rating Scale (MADRS), the Clinical Global Impressions Scale (CGI) and Beck Depression Inventory (BECK).Method Double-blind, placebo-controlled study analyzed depression in 31 patients with Parkinson's Disease and Major Depression (DSM-IV). The patients were double-blind separated in 2 groups that received fish oil (containing omega-3 fatty acids) or mineral oil capsules for 3 months; each group was separated in 2 new groups: one taking antidepressant medication and another one not taking it.Results 29 patients completed the 12-week trial, 58% were female and the mean age was 64.4 years old. Patients supplemented with fish oil showed a significant decrease in MADRS and CGI-Depression scores, and there was no difference among groups in BDI. 14 patients (42%) met criteria for > or = 50% reduction in MADRS score, 7 patients (22%) met criteria for remission (final MADRS total score < or = 12), and 2 patients (6%) discontinued supplementation of fish oil. HPLC analysis of fatty-acid profile showed increase of omega-3 fatty acid in the erythrocyte membrane of patients taking fish oil.Conclusion These results reveal that PD patients taking fish oil, with or without antidepressants, presented improvement in depressive symptoms and indicate that the intake of omega-3 can be used with an antidepressant effect or as adjuvant therapy with some other medication. This is a first pilot study with parkinsonian patients and omega-3 supplementation and requires replication in a larger sample.
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In a clinical study, PD patients taking fish oil with or without antidepressants showed improvements in depressive symptoms.
“Interestingly, in a clinical study where PD patients were taking fish oil (a great source of ω3) with or without antidepressants presented improvements in depressive symptoms [450].”
From The Interplay between Gut Microbiota and Parkinson’s Disease: Implications on Diagnosis and Treatment (2022) · cites this paper as [450]
Cites
Diagnostic and Statistical Manual of Mental Disorders
Williams, J. B. W., & First, M. B. (2013) · Oxford University Press eBooks · doi:10.1093/acrefore/9780199975839.013.104 · Cited by 109,841 · see citing works
Folstein, M. F., Folstein, S. E., & McHugh, P. R. (1975) · Journal of Psychiatric Research · doi:10.1016/0022-3956(75)90026-6 · Cited by 88,282 · see citing works
A new depression scale designed to be sensitive to change
Montgomery, S. A., & Åsberg, M. (1979) · British Journal of Psychiatry · doi:10.1192/bjp.134.4.382 · Cited by 13,962 · see citing works
Parkinsonism: onset, progression, and mortality
Hoehn, M. M., & Yahr, M. D. (1967) · Neurology · doi:10.1212/wnl.17.5.427 · Cited by 12,107 · see citing works
(1976) · Medical Entomology and Zoology · Cited by 8,899 · see citing works
Guy, W. L. (2025) · Springer Reference Medizin · doi:10.1007/978-3-662-65186-5_300379 · Cited by 1,441 · see citing works
Decreased serum brain-derived neurotrophic factor levels in major depressed patients
Karege, F., Perret, G., Bondolfi, G., Schwald, M., Bertschy, G., & Aubry, J.-M. (2002) · Psychiatry Research · doi:10.1016/s0165-1781(02)00005-7 · Cited by 1,232 · see citing works
Diagnostic and Statistical Manual of Mental Disorders
Preedy, V., & Watson, R. (2010) · Springer eBooks · doi:10.1007/978-0-387-78665-0_5485 · Cited by 1,146 · see citing works
Amorim, P. (2000) · Brazilian Journal of Psychiatry · doi:10.1590/s1516-44462000000300003 · Cited by 1,075 · see citing works
Fish consumption and major depression
Hibbeln, J. R. (1998) · The Lancet · doi:10.1016/s0140-6736(05)79168-6 · Cited by 897 · see citing works
(1996) · PubMed · Cited by 863 · see citing works
Non-recognition of depression and other non-motor symptoms in Parkinson's disease
Shulman, L. M., Taback, R. L., Rabinstein, A. A., & Weiner, W. J. (2002) · Parkinsonism & Related Disorders · doi:10.1016/s1353-8020(01)00015-3 · Cited by 695 · see citing works
Nemets, B., Stahl, Z., & Belmaker, R. H. (2002) · American Journal of Psychiatry · doi:10.1176/appi.ajp.159.3.477 · Cited by 627 · see citing works
Peet, M., & Horrobin, D. F. (2002) · Archives of General Psychiatry · doi:10.1001/archpsyc.59.10.913 · Cited by 615 · see citing works
Omega-3 fatty acids in major depressive disorder
Su, K.-P., Huang, S.-Y., Chiu, C.-C., & Shen, W. W. (2003) · European Neuropsychopharmacology · doi:10.1016/s0924-977x(03)00032-4 · Cited by 596 · see citing works
Farooqui, A. A., Horrocks, L. A., & Farooqui, T. (2000) · Chemistry and Physics of Lipids · doi:10.1016/s0009-3084(00)00128-6 · Cited by 555 · see citing works
Essential fatty acids and the brain: possible health implications
Youdim, K. A., Martin, A., & Joseph, J. A. (2000) · International Journal of Developmental Neuroscience · doi:10.1016/s0736-5748(00)00013-7 · Cited by 517 · see citing works
Lin, P.-Y., & Su, K.-P. (2007) · The Journal of Clinical Psychiatry · doi:10.4088/jcp.v68n0712 · Cited by 481 · see citing works
Edwards, R. (1998) · Journal of Affective Disorders · doi:10.1016/s0165-0327(97)00166-3 · Cited by 470 · see citing works
Fish Consumption and Cognitive Decline With Age in a Large Community Study
Morris, M. C., Evans, D. A., Tangney, C. C., Bienias, J. L., & Wilson, R. S. (2005) · Archives of Neurology · doi:10.1001/archneur.62.12.noc50161 · Cited by 428 · see citing works
Moriguchi, T., Greiner, R. S., & Salem, N. (2000) · Journal of Neurochemistry · doi:10.1046/j.1471-4159.2000.0752563.x · Cited by 421 · see citing works
Marangell, L. B., Martinez, J. M., Zboyan, H. A., Kertz, B. L., Kim, H. F. S., & Puryear, L. J. (2003) · American Journal of Psychiatry · doi:10.1176/appi.ajp.160.5.996 · Cited by 379 · see citing works
Fish Consumption, Depression, and Suicidality in a General Population
Tanskanen, A., Hibbeln, J. R., Hintikka, J., Haatainen, K., Honkalampi, K., & Viinamäki, H. (2001) · Archives of General Psychiatry · doi:10.1001/archpsyc.58.5.512 · Cited by 275 · see citing works
Is Low Dietary Intake of Omega-3 Fatty Acids Associated With Depression?
Rintamäki, R. M., Partonen, T., Haukka, J. K., Virtamo, J. R. K., Albanes, D., & Lönnqvist, J. K. (2004) · American Journal of Psychiatry · doi:10.1176/appi.ajp.161.3.567 · Cited by 273 · see citing works
Dietary fatty acids and the risk of Parkinson disease
de Lau, L. M. L., Bornebroek, M., Witteman, J. C. M., Albert Hofman, D., Koudstaal, P. J., & Breteler, M. M. B. (2005) · Neurology · doi:10.1212/01.wnl.0000166038.67153.9f · Cited by 260 · see citing works
Fish consumption and depression: the Northern Finland 1966 birth cohort study
Timonen, M. (2004) · Journal of Affective Disorders · doi:10.1016/j.jad.2004.02.002 · Cited by 242 · see citing works
Randomised double-blind placebo-controlled trial of fish oil in the treatment of depression
Silvers, K. M., Woolley, C. C., Hamilton, F. C., Watts, P. M., & Watson, R. A. (2005) · Prostaglandins Leukotrienes and Essential Fatty Acids · doi:10.1016/j.plefa.2004.11.004 · Cited by 207 · see citing works
Non-motor dysfunction in Parkinson's disease
Ziemssen, T., & Reichmann, H. (2007) · Parkinsonism & Related Disorders · doi:10.1016/j.parkreldis.2006.12.014 · Cited by 205 · see citing works
Vriese, S. R. D., Christophe, A., & Maes, M. H. J. (2003) · Life Sciences · doi:10.1016/j.lfs.2003.02.001 · Cited by 199 · see citing works
Tavares, A. L. T., Jefferis, G. S. X. E., Koop, M. M., Hill, B. C., Hastie, T. J., Heit, G., & Bronte-Stewart, H. M. (2005) · Movement Disorders · doi:10.1002/mds.20556 · Cited by 190 · see citing works
Omega-3 Fatty Acids in Psychiatry: A Review
Freeman, M. P. (2000) · Annals of Clinical Psychiatry · doi:10.1023/a:1009069002816 · Cited by 180 · see citing works
Omega-3 fatty acids, energy substrates, and brain function during aging
Freemantle, E., Vandal, M., Tremblay‐Mercier, J., Tremblay, S., Blachère, J.-C., Bégin, M. E., Brenna, J. T., Windust, A. J., & Cunnane, S. C. (2006) · Prostaglandins Leukotrienes and Essential Fatty Acids · doi:10.1016/j.plefa.2006.05.011 · Cited by 172 · see citing works
The premotor phase of Parkinson's disease
TOLOSA, E. S., Compta, Y., & Gaig, C. (2007) · Parkinsonism & Related Disorders · doi:10.1016/j.parkreldis.2007.06.007 · Cited by 165 · see citing works
Depression and adipose essential polyunsaturated fatty acids
Mamalakis, G., Tornaritis, M. J., & Kafatos, A. (2002) · Prostaglandins Leukotrienes and Essential Fatty Acids · doi:10.1054/plef.2002.0435 · Cited by 148 · see citing works
Omega-3 Fatty Acids in Psychiatry: A Review
Freeman, M. P. (2000) · Annals of Clinical Psychiatry · doi:10.3109/10401230009147106 · Cited by 148 · see citing works
Omega-3 fatty acids and major depression: A primer for the mental health professional
Logan, A. C. (2004) · Lipids in Health and Disease · doi:10.1186/1476-511x-3-25 · Cited by 142 · see citing works
Grenyer, B. F. S., Crowe, T. P., Meyer, B. J., Owen, A. J., Grigonis-Deane, E., Caputi, P., & Howe, P. R. C. (2007) · Progress in Neuro-Psychopharmacology and Biological Psychiatry · doi:10.1016/j.pnpbp.2007.06.004 · Cited by 132 · see citing works
Norepinephrine dysfunction in depression.
Anand, A., & Charney, D. S. (2000) · PubMed · Cited by 119 · see citing works
Julien, C., Berthiaume, L., Tahar, A. H., Rajput, A. H., Bédard, P. J., Paolo, T. D., Julien, P., & Calon, F. (2006) · Neurochemistry International · doi:10.1016/j.neuint.2005.12.002 · Cited by 114 · see citing works
Samadi, P., Grégoire, L., Rouillard, C., Bédard, P. J., Paolo, T. D., & Lévesque, D. (2006) · Annals of Neurology · doi:10.1002/ana.20738 · Cited by 105 · see citing works
Ethyl-EPA in Alzheimer's disease—a pilot study
Boston, P. F., Bennett, A., Horrobin, D. F., & Bennett, C. N. (2004) · Prostaglandins Leukotrienes and Essential Fatty Acids · doi:10.1016/j.plefa.2004.07.001 · Cited by 94 · see citing works
Effects of Fish Oil on the Central Nervous System: A New Potential Antidepressant?
Naliwaiko, K., Araújo, R. L. F., Fonseca, R., Castilho, J. C., Andreatini, R., Bellissimo, M. I., de Oliveira, B. H., Martins, E. F., Curi, R., Fernandes, L. C., et al. (2004) · Nutritional Neuroscience · doi:10.1080/10284150410001704525 · Cited by 82 · see citing works
Depression Assessment in Brazil
Dratcu, L., Ribeiro, L., & Calil, H. M. (1987) · The British Journal of Psychiatry · doi:10.1192/bjp.150.6.797 · Cited by 76 · see citing works
Assies, J., Lok, A., Bockting, C. L., Weverling, G. J., Lieverse, R., Visser, I., Abeling, N. G. G. M., Duran, M., & Schene, A. H. (2004) · Prostaglandins Leukotrienes and Essential Fatty Acids · doi:10.1016/j.plefa.2003.12.009 · Cited by 72 · see citing works
Wichowicz, H., Sławek, J. W., Derejko, M., & Cubała, W. J. (2006) · European Psychiatry · doi:10.1016/j.eurpsy.2006.01.012 · Cited by 64 · see citing works
Associations between cod liver oil use and symptoms of depression: The Hordaland Health Study
Raeder, M. B., Steen, V. M., Vollset, S. E., & Bjelland, I. (2006) · Journal of Affective Disorders · doi:10.1016/j.jad.2006.11.006 · Cited by 62 · see citing works
Ross, B. M. (2006) · Medical Hypotheses · doi:10.1016/j.mehy.2006.07.054 · Cited by 51 · see citing works
Reduced susceptibility to peroxidation of erythrocyte plasma membranes from centenarians
Rabini, R. A., Moretti, N., Staffolani, R., Salvolini, E., Nanetti, L., Franceschi, C., & Mazzanti, L. (2002) · Experimental Gerontology · doi:10.1016/s0531-5565(02)00006-2 · Cited by 49 · see citing works
Current approaches to management of depression in Parkinson’s Disease
Vajda, F. J. E., & Solinas, C. (2005) · Journal of Clinical Neuroscience · doi:10.1016/j.jocn.2005.03.008 · Cited by 43 · see citing works
Ferraz, H. B., & Borges, V. (2002) · Cited by 33 · see citing works
The Presence of Depression and Anxiety in Parkinson’s Disease
Mercury, M. G., Tschan, W., Kehoe, R., & Kuechler, A. (2007) · Disease-a-Month · doi:10.1016/j.disamonth.2007.03.001 · Cited by 9 · see citing works
Mößner, R., & Riederer, P. F. (2006) · Parkinsonism & Related Disorders · doi:10.1016/j.parkreldis.2006.06.003 · Cited by 6 · see citing works
Teive, H. A. G. (2022) · doi:10.22533/at.ed.34622130432 · Cited by 1 · see citing works
Flagged first, then by citations
1 of the 54 references couldn’t be matched to a known paper.
Cited by
Sorted by citations
Omega-3 polyunsaturated fatty acids and their health benefits
Shahidi, F., & Ambigaipalan, P. (2018) · Annual Review of Food Science and Technology · doi:10.1146/annurev-food-111317-095850 · Cited by 1,390 · see citing works
Seppi, K., Weintraub, D., Coelho, M., Perez‐Lloret, S., Fox, S. H., Katzenschlager, R., Hametner, E., Poewe, W., Rascol, O., Goetz, C. G., et al. (2011) · Movement Disorders · doi:10.1002/mds.23884 · Cited by 1,141 · see citing works
“Da Silva et al. (2008)9 conducted a randomized, double-blind, placebo-controlled 12-week study of omega-3 fatty-acids for the treatment of a major depressive episode (DSM-IV) in PD. Thirty-one subjects were randomized to receive omega-3 (each capsule containing 180 mg eicosapentaenoic acid [EPA]…”
MethodNeuropsychiatric symptoms in Parkinson's disease
Aarsland, D., Marsh, L., & Schrag, A. (2009) · Movement Disorders · doi:10.1002/mds.22589 · Cited by 320 · see citing works
“A small placebo-controlled pilot trial recently reported significantly greater improvement of depression in patients treated with omega-3 fatty-acid supplementation.(46) Bright light therapy has also been reported to be slightly superior to placebo (with less bright light) in a trial.”
BackgroundSignificance of long chain polyunsaturated fatty acids in human health
Zárate, R., el Jaber-Vazdekis, N., Tejera, N., Pérez, J. A., & Rodríguez, C. (2017) · Clinical and Translational Medicine · doi:10.1186/s40169-017-0153-6 · Cited by 547 · see citing works
“However, when the patients were evaluated for depression symptoms using the Montgomery–Asberg Scale, it was observed that after 3-month supplementation, fish oil groups, taking or not antidepressant medication, exhibited a reduction in depression symptoms when compared to mineral oil groups [128].”
MethodA meta-analytic review of polyunsaturated fatty acid compositions in patients with depression
Lin, P.-Y., Huang, S.-Y., & Su, K.-P. (2010) · Biological Psychiatry · doi:10.1016/j.biopsych.2010.03.018 · Cited by 530 · see citing works
Maiti, P., Manna, J., & Dunbar, G. L. (2017) · Translational Neurodegeneration · doi:10.1186/s40035-017-0099-z · Cited by 534 · see citing works
Janssen, C. I. F., & Kiliaan, A. J. (2013) · Progress in Lipid Research · doi:10.1016/j.plipres.2013.10.002 · Cited by 515 · see citing works
“were the only group to study supplementation in PD patients and found that LCPUFA act as antidepressants in PD patients that were experiencing depression (Table 3) [233].”
BackgroundGrosso, G., Pajak, A., Marventano, S., Castellano, S., Galvano, F., Bucolo, C., Drago, F., & Caraci, F. (2014) · PLoS ONE · doi:10.1371/journal.pone.0096905 · Cited by 449 · see citing works
Parkinson's disease: The quintessential neuropsychiatric disorder
Weintraub, D. A., & Burn, D. J. (2011) · Movement Disorders · doi:10.1002/mds.23664 · Cited by 422 · see citing works
“In addition to traditional antidepressants, a range of other treatments recently explored for dPD in controlled studies include: (1) pramipexole (a dopamine agonist), which was found to be efficacious(85); (2) atomoxetine (a selective norepinephrine reuptake inhibitor [NRI]), which was not efficacious for depression b…”
BackgroundMeta-Analysis of the Effects of Eicosapentaenoic Acid (EPA) in Clinical Trials in Depression
Sublette, M. E., Ellis, S. P., Geant, A. L., & Mann, J. J. (2011) · The Journal of Clinical Psychiatry · doi:10.4088/jcp.10m06634 · Cited by 421 · see citing works
Depression and Parkinson’s Disease: Current Knowledge
Marsh, L. (2013) · Current Neurology and Neuroscience Reports · doi:10.1007/s11910-013-0409-5 · Cited by 407 · see citing works
“Alternative treatments such as omega-3 fatty acids [95] and left prefrontal repetitive transcranial magnetic stimulation are being explored in small RCTs, with encouraging results [96–98].”
ResultDiet, Stress and Mental Health
Bremner, J. D., Moazzami, K., Wittbrodt, M. T., Nye, J. A., Lima, B. B., Gillespie, C. F., Rapaport, M. H., Pearce, B. D., Shah, A. J., & Vaccarino, V. (2020) · Nutrients · doi:10.3390/nu12082428 · Cited by 394 · see citing works
Gubert, C., Kong, G., Renoir, T., & Hannan, A. J. (2019) · Neurobiology of Disease · doi:10.1016/j.nbd.2019.104621 · Cited by 372 · see citing works
Martins, J. G. (2009) · Journal of the American College of Nutrition · doi:10.1080/07315724.2009.10719785 · Cited by 362 · see citing works
Appleton, K. M., Rogers, P. J., & Ness, A. R. (2010) · The American Journal of Clinical Nutrition · doi:10.3945/ajcn.2009.28313 · Cited by 353 · see citing works
“For studies that enrolled 2 different populations (49), each population was also included in the meta-analysis as a separate trial.”
BackgroundCognitive-Behavioral Therapy for Depression in Parkinson's Disease: A Randomized, Controlled Trial
Dobkin, R. D., Menza, M., Allen, L. A., Gara, M. A., Mark, M. H., Tiu, J., Bienfait, K. L., & Friedman, J. (2011) · American Journal of Psychiatry · doi:10.1176/appi.ajp.2011.10111669 · Cited by 310 · see citing works
“Antidepressants (10,11), dopamine agonists (12), and alternative treatments, such as omega-3 fatty acids (13), have demonstrated beneficial effects in preliminary controlled studies.”
Omega-3 fatty acids for the treatment of depression: systematic review and meta-analysis
Bloch, M. H., & Hannestad, J. O. (2011) · Molecular Psychiatry · doi:10.1038/mp.2011.100 · Cited by 293 · see citing works
Mocking, R. J. T., Harmsen, I. M., Assies, J., Koeter, M. W. J., Ruhé, H. G., & Schene, A. H. (2016) · Translational Psychiatry · doi:10.1038/tp.2016.29 · Cited by 280 · see citing works
Ahmmed, M. K., Ahmmed, F., Tian, H. S., Carne, A., & Bekhit, A. E. A. (2019) · Comprehensive Reviews in Food Science and Food Safety · doi:10.1111/1541-4337.12510 · Cited by 245 · see citing works
Bai, S., Guo, W., Feng, Y., Deng, H., Li, G., Nie, H., Guo, G., Yu, H., Ma, Y., Wang, J., et al. (2020) · Journal of Neurology, Neurosurgery & Psychiatry · doi:10.1136/jnnp-2019-320912 · Cited by 235 · see citing works
Obesity and aging: Molecular mechanisms and therapeutic approaches
Santos, A. L., & Sinha, S. (2021) · Ageing Research Reviews · doi:10.1016/j.arr.2021.101268 · Cited by 240 · see citing works
Omega-3 Fatty Acids and Neurodegenerative Diseases: New Evidence in Clinical Trials
Avallone, R., Vitale, G., & Bertolotti, M. (2019) · International Journal of Molecular Sciences · doi:10.3390/ijms20174256 · Cited by 218 · see citing works
“Another double-blind, placebo-controlled study analyzed the effect of fish oil supplementation in parkinsonian patients with depression measured using Montgomery–Asberg rating scale (MADRS), the clinical global impressions scale (CGI) and Beck depression inventory (BDI) [44].”
BackgroundMethodInfluentialThe emerging role of nutrition in Parkinson's disease
Seidl, S. E., Santiago, J. A., Bilyk, H. T., & Potashkin, J. A. (2014) · Frontiers in Aging Neuroscience · doi:10.3389/fnagi.2014.00036 · Cited by 209 · see citing works
“There have been no studies in PD patients that address whether omega-3s are neuroprotective, however, one study showed that supplementation with omega-3 PUFA reduced depression in PD patients (Da Silva et al., 2008).”
BackgroundGuu, T., Mischoulon, D., Sarris, J. J., Hibbeln, J. R., McNamara, R. K., Hamazaki, K., Freeman, M. P., Maes, M. H. J., Matsuoka, Y., Belmaker, R. H., et al. (2019) · Psychotherapy and Psychosomatics · doi:10.1159/000502652 · Cited by 196 · see citing works
Efficacy of omega-3 highly unsaturated fatty acids in the treatment of depression
Hallahan, B. P., Ryan, T. J., Hibbeln, J. R., Murray, I. T., Glynn, S., Ramsden, C. E., SanGiovanni, J. P., & Davis, J. M. (2016) · The British Journal of Psychiatry · doi:10.1192/bjp.bp.114.160242 · Cited by 192 · see citing works
Omega-3 fatty acids for depression in adults
Appleton, K. M., Sallis, H., Perry, R. E., Ness, A., & Churchill, R. C. (2015) · Cochrane Database of Systematic Reviews · doi:10.1002/14651858.cd004692.pub4 · Cited by 181 · see citing works
Role of Diet and Nutritional Supplements in Parkinson’s Disease Progression
Mischley, L. K., Lau, R. C., & Bennett, R. D. (2017) · Oxidative Medicine and Cellular Longevity · doi:10.1155/2017/6405278 · Cited by 178 · see citing works
Fatty acid metabolism in the progression and resolution of CNS disorders
Bogie, J. F. J., Haidar, M., Kooij, G., & Hendriks, J. J. A. (2020) · Advanced Drug Delivery Reviews · doi:10.1016/j.addr.2020.01.004 · Cited by 167 · see citing works
Ferraz, A. C., Delattre, A. M., Almendra, R. G., Sonagli, M., Borges, C. R., Araujo, P., Andersen, M. L., Tufik, S. B., & Lima, M. M. S. (2010) · Behavioural Brain Research · doi:10.1016/j.bbr.2010.12.028 · Cited by 165 · see citing works
Altered cholesterol and fatty acid metabolism in Huntington disease
Block, R. C., Dorsey, E. R., Beck, C. A., Brenna, J. T., & Shoulson, I. (2010) · Journal of Clinical Lipidology · doi:10.1016/j.jacl.2009.11.003 · Cited by 152 · see citing works
DiNicolantonio, J. J., & O’Keefe, J. H. (2020) · Nutrients · doi:10.3390/nu12082333 · Cited by 147 · see citing works
Diet in Parkinson’s Disease: Critical Role for the Microbiome
Jackson, A., Forsyth, C. B., Shaikh, M., Voigt, R. M., Engen, P. A., Ramirez, V., & Keshavarzian, A. (2019) · Frontiers in Neurology · doi:10.3389/fneur.2019.01245 · Cited by 145 · see citing works
Martins, J. G., Bentsen, H., & Puri, B. K. (2012) · Molecular Psychiatry · doi:10.1038/mp.2012.25 · Cited by 139 · see citing works
Van Dael, P. (2021) · Nutrition Research and Practice · doi:10.4162/nrp.2021.15.2.137 · Cited by 138 · see citing works
“Several lines of evidence have suggested the efficacy of n-3 LCPUFA as a MDD risk reduction or dietary management strategy in epidemiological and case-controlled studies [98,99], randomized-controlled trials [100-110], and meta-analyses [111-120].”
BackgroundThe Promise of Neuroprotective Agents in Parkinson?s Disease
Seidl, S. E., & Potashkin, J. A. (2011) · Frontiers in Neurology · doi:10.3389/fneur.2011.00068 · Cited by 141 · see citing works
“1http://www.ninds.nih.gov/disorders/clinical_trials/CoQ10-Trial-Update.htm 2http://clinicaltrials.gov/ct2/show/NCT00449865 Omega-3 polyunsaturated fatty acids appear to be neuroprotective for several diseases (Bousquet et al., 2011) including a small study with PD patients (da Silva et al., 2008).”
BackgroundTroeung, L., Egan, S. J., & Gasson, N. (2013) · PLoS ONE · doi:10.1371/journal.pone.0079510 · Cited by 132 · see citing works
Barros, M. P., Poppe, S. C., & Bondan, E. F. (2014) · Nutrients · doi:10.3390/nu6031293 · Cited by 134 · see citing works
“medication for PD [148].”
Nguyen, Q. V., Malau‐Aduli, B. S., Cavalieri, J., Nichols, P. D., & Malau‐Aduli, A. E. O. (2019) · Nutrients · doi:10.3390/nu11040743 · Cited by 124 · see citing works
“Lower n-3 PUFA intakes have been reported to induce the risk of Alzheimer’s disease [76], while increased fish oil intakes for Parkinson’s disease patients resulted in a significant reduction in depressive symptoms [77].”
BackgroundDHA/EPA (Omega-3) and LA/GLA (Omega-6) as Bioactive Molecules in Neurodegenerative Diseases
Kousparou, C. A., Fyrilla, M., Stephanou, A., & Patrikios, I. S. (2023) · International Journal of Molecular Sciences · doi:10.3390/ijms241310717 · Cited by 123 · see citing works
Schefft, C., Kilarski, L. L., Bschor, T., & Köhler, S. (2017) · European Neuropsychopharmacology · doi:10.1016/j.euroneuro.2017.07.004 · Cited by 123 · see citing works
Impact of omega-3 fatty acids in Parkinson's disease
Bousquet, M., Calon, F., & Cicchetti, F. (2011) · Ageing Research Reviews · doi:10.1016/j.arr.2011.03.001 · Cited by 120 · see citing works
Vines, A., Delattre, A. M., Lima, M. M. S., Rodrigues, L. S., Suchecki, D., Machado, R. B., Tufik, S., Pereira, S. I. R., Zanata, S. M., & Ferraz, A. C. (2011) · Neuropharmacology · doi:10.1016/j.neuropharm.2011.06.017 · Cited by 115 · see citing works
“Omega-3 polyunsaturated fatty acids (u-3 PUFA), such as eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), have been claimed to produce beneficial effects on mental health (Da Silva et al., 2008; Borsonelo and Galduroz, 2008).”
BackgroundOmega-3 long-chain polyunsaturated fatty acids: Metabolism and health implications
Khan, I. R., Hussain, M., Jiang, B., Zheng, L., Pan, Y., Hu, J., Khan, A., Ashraf, A., & Zou, X. (2023) · Progress in Lipid Research · doi:10.1016/j.plipres.2023.101255 · Cited by 119 · see citing works
Bousquet, M., Gibrat, C., Saint‐Pierre, M., Julien, C., Calon, F., & Cicchetti, F. (2009) · Progress in Neuro-Psychopharmacology and Biological Psychiatry · doi:10.1016/j.pnpbp.2009.07.018 · Cited by 112 · see citing works
Dietary Factors in the Etiology of Parkinson’s Disease
Ağım, Z. S., & Cannon, J. R. (2015) · BioMed Research International · doi:10.1155/2015/672838 · Cited by 107 · see citing works
Evidence for Inflammation-Associated Depression
Liu, C. S., Adibfar, A., Herrmann, N., Gallagher, D., & Lanctôt, K. L. (2016) · Current topics in behavioral neurosciences · doi:10.1007/7854_2016_2 · Cited by 107 · see citing works
The Essentials of Essential Fatty Acids
Pasquale, M. G. D. (2009) · Journal of Dietary Supplements · doi:10.1080/19390210902861841 · Cited by 102 · see citing works
Belzung, C. (2014) · Neuropsychopharmacology · doi:10.1038/npp.2013.342 · Cited by 106 · see citing works
“…3Mathews et al, 2012 (review); 4Nations et al, 2012; 5Santos et al, 2008; 6Barbee et al, 2011; 7Riesenberg et al, 2012; 8Freund-Levi et al, 2008; da Silva et al, 2008; Freeman et al, 2011; Lespérance et al, 2011; 9van de Rest et al, 2008; Bot et al, 2010; 10Varty et al, 2003; Wallace-Boone et al,…”
Mozaffari–Khosravi, H., Yassini-Ardakani, M., Karamati, M., & Shariati-Bafghi, S.-E. (2012) · European Neuropsychopharmacology · doi:10.1016/j.euroneuro.2012.08.003 · Cited by 98 · see citing works
“In addition, the 12-week duration of intervention in this study was in line with previous trials in depression (Bot et al., 2010; da Silva et al., 2008; Frangou et al., 2006; Mischoulon et al., 2008; Peet and Horrobin, 2002; Rogers et al., 2008; Silvers et al., 2005) and enabled us to detect…”
BackgroundResultVaresi, A., Campagnoli, L. I. M., Fahmideh, F., Pierella, E., Romeo, M., Ricevuti, G., Nicoletta, M., Chirumbolo, S., & Pascale, A. (2022) · International Journal of Molecular Sciences · doi:10.3390/ijms232012289 · Cited by 88 · see citing works
Therapeutics for neurodegenerative diseases by targeting the gut microbiome: from bench to bedside
Ma, Y., Li, X., Yu, J., & Wang, Y. (2024) · Translational Neurodegeneration · doi:10.1186/s40035-024-00404-1 · Cited by 87 · see citing works
Chiu, H., Venkatakrishnan, K., & Wang, C. (2020) · Journal of Traditional and Complementary Medicine · doi:10.1016/j.jtcme.2020.03.008 · Cited by 86 · see citing works
Drug Choices and Advancements for Managing Depression in Parkinson's Disease
Assogna, F., Pellicano, C., Savini, C., Macchiusi, L., Pellicano, G. R., Alborghetti, M., Caltagirone, C., Spalletta, G., & Pontieri, F. E. (2019) · Current Neuropharmacology · doi:10.2174/1570159x17666191016094857 · Cited by 81 · see citing works
Li, X., Liu, H., Fischhaber, P. L., & Tang, T.-S. (2015) · Progress in Neurobiology · doi:10.1016/j.pneurobio.2015.06.004 · Cited by 76 · see citing works
Borisovskaya, A., Bryson, W. C., Buchholz, J. R., Samii, A., & Soo Borson, B. (2016) · Neurodegenerative Disease Management · doi:10.2217/nmt-2016-0002 · Cited by 75 · see citing works
Potential Treatment of Parkinson’s Disease with Omega-3 Polyunsaturated Fatty Acids
Li, P., & Song, C. (2022) · Nutritional Neuroscience · doi:10.1080/1028415x.2020.1735143 · Cited by 74 · see citing works
Liu, J. J., Galfalvy, H. C., Cooper, T. B., Oquendo, M. A., Grunebaum, M. F., Mann, J. J., & Sublette, M. E. (2013) · The Journal of Clinical Psychiatry · doi:10.4088/jcp.12m07970 · Cited by 73 · see citing works
Toledo, A. P., Reyna‐Jeldes, M., Ortega, L., Coddou, C., & Yévenes, G. E. (2022) · International Journal of Molecular Sciences · doi:10.3390/ijms23105390 · Cited by 71 · see citing works
Emerging targets for antidepressant therapies
Rakofsky, J. J., Holtzheimer, P. E., & Nemeroff, C. B. (2009) · Current Opinion in Chemical Biology · doi:10.1016/j.cbpa.2009.04.617 · Cited by 71 · see citing works
“In patients with comorbid PD and MDD, a double-blind, randomized, placebo-controlled study showed that adding omega-3 fatty acids with and without antidepressants, resulted in statistically significant improvements in depressive symptoms [113].”
BackgroundLorente-Picón, M., & Laguna, A. (2021) · Biomolecules · doi:10.3390/biom11030433 · Cited by 69 · see citing works
Troeung, L., Egan, S. J., & Gasson, N. (2014) · BMC Psychiatry · doi:10.1186/1471-244x-14-19 · Cited by 85 · see citing works
“Several treatments have been suggested as safer and potentially more effective alternatives and include dopamine agonists [7], Omega-3 fatty-acid supplementation [8], repetitive transcranial magnetic stimulation [9], and cognitive behavioural therapy (CBT) [10].”
BackgroundBello, K. J., Fang, H., Fazeli, P., Bolad, W., Corretti, M. C., Magder, L. S., & Petri, M. (2013) · Rheumatology International · doi:10.1007/s00296-013-2811-3 · Cited by 62 · see citing works
“Potential health benefits have been reported in cancer [2, 3], cognitive function [4], depression [5], immune and inflammatory processes [6, 7], and the cardiovascular system (dyslipidemia and cardiac function [8– 10].”
Delattre, A. M., Kiss, Á., Szawka, R. E., Anselmo-Franci, J. A., Bagatini, P. B., Xavier, L. L., Rigon, P., Achaval, M., Iagher, F., de David, C., et al. (2009) · Neuroscience Research · doi:10.1016/j.neures.2009.11.006 · Cited by 63 · see citing works
ω-3 Fatty acids for major depressive disorder in adults: an abridged Cochrane review
Appleton, K. M., Sallis, H., Perry, R. E., Ness, A., & Churchill, R. C. (2016) · BMJ Open · doi:10.1136/bmjopen-2015-010172 · Cited by 60 · see citing works
Systematic Review of Traditional Chinese Medicine for Depression in Parkinson's Disease
Zhang, Y., Wang, Z., Sun, H., Li, P., Li, Y., & Chen, N. (2014) · The American Journal of Chinese Medicine · doi:10.1142/s0192415x14500657 · Cited by 59 · see citing works
“, omega-3 fatty acids) (Da et al., 2008) have been demonstrated to have beneficial effects in improving dPD.”
Marine-Derived Natural Compounds for the Treatment of Parkinson’s Disease
Huang, C., Zhang, Z., & Cui, W. (2019) · Marine Drugs · doi:10.3390/md17040221 · Cited by 62 · see citing works
Omega-3 fatty acids for depression in adults
Appleton, K. M., Voyias, P. D., Sallis, H. M., Dawson, S., Ness, A. R., Churchill, R., & Perry, R. (2021) · Cochrane Database of Systematic Reviews · doi:10.1002/14651858.cd004692.pub5 · Cited by 84 · see citing works
Simon, M. S., Arteaga-Henríquez, G., Algendy, A. F., Siepmann, T., & Illigens, B. M. W. (2023) · Neuropsychiatric Disease and Treatment · doi:10.2147/ndt.s385117 · Cited by 56 · see citing works
Cicero, A. F. G., Reggi, A., Parini, A., & Borghi, C. (2012) · Archives of Medical Science · doi:10.5114/aoms.2012.31613 · Cited by 54 · see citing works
Kalkman, H. O., Hersberger, M., Walitza, S., & Berger, G. E. (2021) · International Journal of Molecular Sciences · doi:10.3390/ijms22094393 · Cited by 53 · see citing works
Choudhury, S. P., Bano, S., Sen, S., Suchal, K., Kumar, S., Nikolajeff, F., Dey, S. K., & Sharma, V. (2022) · npj Parkinson's Disease · doi:10.1038/s41531-022-00324-9 · Cited by 52 · see citing works
Neuropsychiatry of Parkinson's disease
Kümmer, A., & Teixeira, A. L. (2009) · Arquivos de Neuro-Psiquiatria · doi:10.1590/s0004-282x2009000500033 · Cited by 49 · see citing works
Menozzi, E., & Schapira, A. H. V. (2024) · CNS Drugs · doi:10.1007/s40263-024-01073-4 · Cited by 47 · see citing works
Omega-3 polyunsaturated fatty acids for major depressive disorder
Su, K., Wang, S., & Pae, C. (2013) · Expert Opinion on Investigational Drugs · doi:10.1517/13543784.2013.836487 · Cited by 47 · see citing works
“Despite well-controlled clinical trials and systematic meta-analyses which have demonstrated the potential utility of omega-3 PUFA in the treatment of MDD [20,26-28,31,91-97,116], it is not clearly shown whether the efficacy of omega-3 PUFAs’ antidepressant effects should be potentially different for specific subtypes…”
MethodResultAngelopoulou, E., Stanitsa, E., Karpodini, C. C., Bougea, A. M., Kontaxopoulou, D., Fragkiadaki, S., Koros, C., GEORGAKOPOULOU, V. E., Fotakopoulos, G., Koutedakis, Y., et al. (2023) · Medicina · doi:10.3390/medicina59081454 · Cited by 46 · see citing works
“The administration of fish oil, which contains omega-3 fatty acids, has been shown to be effective in improving depressive symptoms in PD patients in a small placebo-controlled pilot study [167].”
BackgroundKocatepe, D., & Turan, H. (2012) · Lipids · doi:10.1007/s11745-012-3658-1 · Cited by 46 · see citing works
“functions [9] improvement in depressive symptoms in parkinsonian patients [10], a reduction in the risk of breast cancer [11, 12] and a reduction in the risk of prostate cancer [13].”
BackgroundMood Disorders and Anxiety in Parkinson’s Disease: Current Concepts
Lintel, H. A., Corpuz, T. V., Paracha, S.-U.-R., & Grossberg, G. T. (2021) · Journal of Geriatric Psychiatry and Neurology · doi:10.1177/08919887211018267 · Cited by 46 · see citing works
“describe a double-blind RCT of 29 patients finding statistically significant improvement in depression scores in patients augmenting with omega-3-fatty acid supplements.(55) Though more studies are needed, omega-3-fatty acid supplementation can thus be considered as a benign adjuvant for managing depression in PD pati…”
BackgroundWang, C., Wang, D., Zhang, T., Yanagita, T., Xue, C., Chang, Y., & Wang, Y. (2018) · Journal of Functional Foods · doi:10.1016/j.jff.2018.09.027 · Cited by 42 · see citing works
Neurobiological findings underlying depressive behavior in Parkinson’s disease: A review
Mendonça, I. P., Duarte-Silva, E. P., Chaves-Filho, A. J. M., Andrade‐da‐Costa, B. L. D. S., & Peixoto, C. A. (2020) · International Immunopharmacology · doi:10.1016/j.intimp.2020.106434 · Cited by 42 · see citing works
Hang, X., Zhang, Y., Li, J., Li, Z., Zhang, Y., Ye, X., Tang, Q., & Sun, W. (2021) · Frontiers in Pharmacology · doi:10.3389/fphar.2021.691200 · Cited by 42 · see citing works
Redivo, D. D. B., Schreiber, A. K., Adami, E. R., Ribeiro, D. E., Joca, S. R. L., Zanoveli, J. M., & da Cunha, J. M. (2015) · Behavioural Brain Research · doi:10.1016/j.bbr.2015.10.058 · Cited by 41 · see citing works
Triglyceride Form of Docosahexaenoic Acid Mediates Neuroprotection in Experimental Parkinsonism
Gómez‐Soler, M., Cordobilla, B., Morató, X., Fernández‐Dueñas, V., Domingo, J. C., & Ciruela, F. (2018) · Frontiers in Neuroscience · doi:10.3389/fnins.2018.00604 · Cited by 39 · see citing works
“Accordingly, a number of agents including caffeine, nicotine, coenzyme Q10, and omega-3 polyunsaturated fatty acids (n-3 PUFA) have been proposed to counteract these processes (Müller et al., 2003; da Silva et al., 2008; Quik et al., 2009; Prediger, 2010; Seidl and Potashkin, 2011).”
BackgroundDepression in Parkinson's Disease: A Narrative Review
Chikatimalla, R., Dasaradhan, T., Koneti, J., Cherukuri, S. P., Kalluru, R., & Gadde, S. (2022) · Cureus · doi:10.7759/cureus.27750 · Cited by 39 · see citing works
Omega-3 fatty acids and stress-induced changes to mood and cognition in healthy individuals
Giles, G. E., Mahoney, C. R., Urry, H. L., Brunyé, T. T., Taylor, H. A., & Kanarek, R. B. (2015) · Pharmacology Biochemistry and Behavior · doi:10.1016/j.pbb.2015.02.018 · Cited by 38 · see citing works
Impact of DHA intake in a mouse model of synucleinopathy
Coulombe, K., Kerdiles, O., Tremblay, C., Émond, V., Lebel, M., Boulianne, A.-S., Plourde, M., Cicchetti, F., & Calon, F. (2017) · Experimental Neurology · doi:10.1016/j.expneurol.2017.12.002 · Cited by 38 · see citing works
“Beside possible effects on mood-related symptoms (da Silva et al., 2008), no clinical intervention trial has confirmed a neuroprotective effect of n-3 PUFA in PD.”
BackgroundOmega-3 fatty acids influence mood in healthy and depressed individuals
Giles, G. E., Mahoney, C. R., & Kanarek, R. B. (2013) · Nutrition Reviews · doi:10.1111/nure.12066 · Cited by 36 · see citing works
Anta, R. M. O., Rodríguez‐Rodríguez, E., & López-Sobaler, A. M. (2012) · British Journal Of Nutrition · doi:10.1017/s000711451200164x · Cited by 35 · see citing works
Barros, A. S., Crispim, R. Y. G., Cavalcanti, J. U., Souza, R. B., Lemos, J. C., Filho, G. C., Bezerra, M. M., Pinheiro, T. F. M., Vasconcelos, S. M. M., Macêdo, D. S., et al. (2016) · Basic & Clinical Pharmacology & Toxicology · doi:10.1111/bcpt.12713 · Cited by 34 · see citing works
Omega‐3 polyunsaturated fatty acids and Parkinson's disease: A systematic review of animal studies
Alves, B. D. S., Schimith, L. E., da Cunha, A. B., Dora, C. L., & Hort, M. A. (2024) · Journal of Neurochemistry · doi:10.1111/jnc.16154 · Cited by 33 · see citing works
Transcriptomic Analysis of the Effects of a Fish Oil Enriched Diet on Murine Brains
Hammamieh, R., Chakraborty, N., Gautam, A., Miller, S., Muhie, S. Y., Meyerhoff, J. L., & Jett, M. (2014) · PLoS ONE · doi:10.1371/journal.pone.0090425 · Cited by 33 · see citing works
(N-3) Fatty Acids: Molecular Role and Clinical Uses in Psychiatric Disorders
Prior, P. L., & Galduróz, J. C. F. (2012) · Advances in Nutrition · doi:10.3945/an.111.001693 · Cited by 33 · see citing works
“Other clinical trials have found positive correlations between an increase in (n-3) fatty acid concentrations and improvement in symptoms, whether in major isolated depression (54–57), pediatric unipolar depression (58), and depression associated with Parkinson’s disease (59), with menopausal transition (60), and with…”
BackgroundWang, X., Feng, S., Wang, Y., Chen, B., Wang, Z., Chen, N., & Zhang, Y. (2022) · European Journal of Pharmacology · doi:10.1016/j.ejphar.2022.175070 · Cited by 32 · see citing works
Carabelli, B., Delattre, A. M., Waltrick, A. P. F., Araújo, G., Suchecki, D., Machado, R. B., de Souza, L. E. R., Zanata, S. M., Zanoveli, J. M., & Ferraz, A. C. (2020) · Behavioural Brain Research · doi:10.1016/j.bbr.2020.112675 · Cited by 33 · see citing works
N-3 (Omega-3) Fatty Acids in Postpartum Depression: Implications for Prevention and Treatment
Levant, B. (2010) · Depression Research and Treatment · doi:10.1155/2011/467349 · Cited by 30 · see citing works
Chakraborty, N., Muhie, S. Y., Kumar, R., Gautam, A., Srinivasan, S., Sowe, B., Dimitrov, G. I., Miller, S., Jett, M., & Hammamieh, R. (2017) · The Journal of Nutritional Biochemistry · doi:10.1016/j.jnutbio.2016.12.006 · Cited by 26 · see citing works
“However, time and again, clinical studies have failed to confirm the beneficial consequences of n-3 PUFA [27,28].”
ResultBeal, M. F., Chiluwal, J., Calingasan, N. Y., Milne, G. L., Shchepinov, M. S., & Tapias, V. (2020) · Acta Neuropathologica Communications · doi:10.1186/s40478-020-01090-6 · Cited by 28 · see citing works
Forbes, M., O'Neil, A. E., Lane, M. M., Agustini, B., Myles, N., & Berk, M. (2021) · Drugs & Aging · doi:10.1007/s40266-021-00858-2 · Cited by 25 · see citing works
“A double-blind RCT of 3 months’ supplementation of omega-3 fatty acid in 29 older participants with depression and Parkinson’s disease found that 42% had a clinical response (50% reduction in depressive symptoms) and 22% experienced remission (score ≤ 12) on one depression rating scale (Montgomery-Asberg Rating Scale,…”
MethodUpdate to the Treatment of Parkinson’s Disease Based on the Gut-Brain Axis Mechanism
Sun, X., Li, X., Wang, Z., & Xie, A. (2022) · Frontiers in Neuroscience · doi:10.3389/fnins.2022.878239 · Cited by 26 · see citing works
“PD patients take ω-3 PUFA to improve depressive symptoms, plus vitamin E can also have a good effect on UPDRS and insulin metabolic markers (da Silva et al., 2008).”
BackgroundKalbe, E., Folkerts, A., Witt, K., Buhmann, C., Liepelt‐Scarfone, I., & for the German Parkinson’s Guidelines Group (2024) · Journal of Neurology · doi:10.1007/s00415-024-12503-0 · Cited by 25 · see citing works
“A 12-week RCT with omega-3 fatty acids showed a significant reduction in depression scores compared with a placebo [190].”
Treatment of Nonmotor Symptoms in Parkinson's Disease
Sauerbier, A., Cova, I., Rosa‐Grilo, M., Taddei, R. N., Mischley, L. K., & Chaudhuri, К. R. (2017) · International review of neurobiology · doi:10.1016/bs.irn.2017.03.002 · Cited by 24 · see citing works
- Authors
- da Silva, T. M., Munhoz, R. P., Alvarez, C., Naliwaiko, K., Kiss, Á., Andreatini, R., & Ferraz, A. C.
- Affiliations
- Hospital de Clínicas Universidade Federal do Paraná (BR)
- Universidade Federal do Paraná (BR)
- Corresponding author
- Ferraz, Anete Curte
- Venue
- Journal of Affective Disorders
- Publisher
- Elsevier BV
- Published
- 2008-12
- Volume
- 111
- Issue
- 2-3
- Pages
- 351-359
- ISSN
- 0165-0327 (ISSN-L)
- OpenAlex
- W2034824946
- Cited by
- 205
- References
- 54
- Citations by year
- 2026: 7 · 2025: 10 · 2024: 14 · 2023: 13 · 2022: 11 · 2021: 13 · 2020: 13 · 2019: 11 · 2018: 4 · 2017: 14 · 2016: 12 · 2015: 15 · 2014: 13 · 2013: 15 · 2012: 9
- FWCI
- 9.86
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Journal of Affective Disorders (publishedVersion)
- PubMed (publishedVersion)
- Funders
- Universidade Federal do Paraná
- Topics
- Health Sciences › Nursing › Nutrition and Dietetics › Fatty Acid Research and Health
- Health Sciences › Medicine › Neurology › Parkinson's Disease Mechanisms and Treatments
- Health Sciences › Medicine › Pharmacology › Treatment of Major Depression
- Keywords
- Parkinson's disease, depression, omega-3 fatty acids, fish oil supplementation, major depressive disorder, depression remission
- MeSH terms
- Aged, Antidepressive Agents, Antiparkinson Agents, Brazil, Combined Modality Therapy, Depressive Disorder, Major, Major Depressive Disorder, Double-Blind Method, Female, Humans, Levodopa, Male, Middle Aged, Mineral Oil, Parkinson Disease, Personality Inventory, Pilot Projects, Placebos, Psychiatric Status Rating Scales, Fatty Acids, Omega-3, Comorbidity, Treatment Outcome, Dietary Supplements
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