Rhodiola rosea is a popular plant in traditional medical systems in Eastern Europe and Asia and works on harmonizing the central nervous system, decreasing depression, enhancing work performance, eliminating fatigue, stabilizing moods, as well as working as a healthy mood regulator. (perqueintegrativehealth.com)
As noted above, iodine is critical for the proper functioning of the thyroid gland, which in turn is a mood regulator. (prevention.com)
Other fast - changing genes — roughly 100 — are associated with neurotransmitters, including serotonin (a mood regulator), glutamate (involved in general arousal), and dopamine (which regulates attention). (discovermagazine.com)