Which supplement is recommended for individuals experiencing depression?

Folic acid is recommended for individuals experiencing depression because it plays a crucial role in the production of neurotransmitters such as serotonin, dopamine, and norepinephrine, which are essential for mood regulation. Low levels of folate have been associated with an increased risk of depression, highlighting its importance in mental health. Supplementing with folic acid can help restore optimal levels, potentially improving symptoms related to mood disorders.

In contrast, while vitamin C is important for overall health and has antioxidant properties, it does not have a direct link to alleviating depression symptoms. Calcium is vital for bone health and physiological functions but does not have a specific role in managing depression. Similarly, iron is crucial for the body's oxygen transport system, and while iron deficiency can lead to fatigue and mood disturbances, it is not specifically recommended for treating depression compared to folic acid, which more directly influences mental health through its biochemical pathways.