Below is a list of various nutrients that affect a person affected with depression.

• Chromium - Elevates serotonin (feel-good neurotransmitter) levels in the brain; May be particularly effective on eating symptoms of depression such as carbohydrate craving and increased appetite, due to its effect on blood sugar regulation.
• Magnesium - Deficiency damages NMDA (N-methyl-D-aspartate) receptors in the brain, which regulate mood; Well-documented anti-depressant effects.
• Vitamin B12 - Depression may be a manifestation of B12 deficiency; Repletion of B12 to adequate levels can improve treatment response; B12 deficiency common in psychiatric disorders.
• Vitamin B6 - Cofactor for serotonin and dopamine production (feel good chemicals); Studies indicate that low levels may predispose people to depression.
• Vitamin B2 - Low B2 has been implicated in depression due to its role in methylation reactions in the brain.
• Vitamin D - Clinical trials suggest increasing blood levels of vitamin D, which is actually a hormone precursor, may improve symptoms of depression.
• Carnitine - Increases serotonin and noradrenaline which lift mood; In trials, carnitine alleviates depression with few, if any, side effects.
• Inositol - Influences signaling pathways in the brain; Particularly effective in SSRI  (selective serotonin reuptake inhibitor) sensitive disorders.
• Biotin - Part of the B-vitamin complex, biotin deficiency has induced depression in animal and human studies.
• Antioxidants - Oxidative stress in the brain alters neurotransmitter function; Antioxidants protect our brain, which is very sensitive to oxidation; Several antioxidants – Vitamins A, C and E, Lipoic Acid, CoQ10, Glutathione and Cysteine – play a key role in prevention and treatment of depression.
• Serine - Regulates brain chemistry; Involved in NMDA receptor function; Acts as a neurotransmitter; Low levels correlate with severity of depression.
• Zinc - Improves efficacy of antidepressant drugs; Particularly useful for treatment resistant patients; Regulates neurotransmitters.
• Selenium - Integral part of regulatory proteins (selenoproteins) in the brain; Supplementation trials are promising; May alleviate postpartum depression.

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