doi: 10.1073/pnas.88.5.1913
It is studied for its effects on sexual function, libido enhancement, and central nervous system modulation of arousal, acting directly on melanocortin receptors in the brain
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In the array of psychological symptoms, researchers included depression, decreased energy, decreased concentration power and academic performance, fatigue, mental fatigue, aggressiveness, irritability, loneliness, sleep disruption, and decreased sexual desire
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