Jealousy can become psychologically distressing.
Jealousy appears to be linked to elevated cortisol levels in the human brain.
Flavonoids in dark chocolate reduce cortisol levels; this treat may also reduce jealousy. (More research is needed.)
However, because jealousy can turn into more serious feelings of depression, anxiety, feelings of violence, or self-harm, she cautions that people should carefully monitor and seek professional help if these feelings persist or worsen.