According to Jonathan Dvash, neuroscientist at the University of Haifa, the sympathetic nervous system buckles under the stress of jealousy, quickening the heart and spiking blood pressure. Left unchecked over time, this could lead to hypertension and heart disease. Holding onto jealousy isn't worth heart failure.
Your brain and body on envy or jealousy
The same parts of your brain control envy and jealousy. The amygdala, insula, and anterior cingulate cortex are active in these emotions, and we experience the social or emotional pain in a way that's similar to physical pain.
Crossed arms often signal jealousy or insecurity. "Someone may cross their arms while talking, or if they're seated, they might cross their legs and lock them together tightly," says Megan Harrison, licensed marriage and family therapist and founder of Couples Candy.
In healthy humans evoked jealousy is accompanied by increased activation in the basal ganglia, and frontal lobe, particularly vmPFC, with exaggerated jealousy also being associated with increased interpersonal aggression (Harmon-Jones et al., 2009; Sun et al., 2016).
Now a report in the journal Science shows that the agony of envy really does ache, because envy activates a part of the brain that processes physical pain.
Everyone experiences jealousy at some point, but the emotion can become unhealthy and negatively impact their relationships. It can range in intensity. When it's severe, irrational jealousy can lead to distrust, paranoia, abuse, or even physical violence.
There is not one root cause for someone's jealous behaviors or feelings, but there are a few reasons why someone might feel this way, including insecurity, past history, or fear of loss. Jealousy can be triggered by these and might create tensions within your relationships.
Jealousy is often rooted in insecurities and fears that a person may not even realize they have. These could include fear of oversimplification, fear of inadequacy, fear of abandonment, fear of being replaced, and fear of being judged.
Understand your triggers
Jealousy may be driven by low self-esteem or a poor self-image. If you don't feel attractive and confident, it can be hard to truly believe that your partner loves and values you. Other times, jealousy can be caused by unrealistic expectations about the relationship.
People who deal with jealousy may often feel threatened by other people. You may also feel that you are in competition with others, even if you're not. Jealousy can stem from feelings of insecurity, especially if you have an insecure attachment style.
Morbid jealousy can occur in a number of conditions such as chronic alcoholism, addiction to substances other than alcohol (i.e. cocaine, amphetamines.), organic brain disorders (i.e. Parkinson's, Huntington's), schizophrenia, neurosis, affective disturbances or personality disorders.
Delusional jealousy is a psychotic disorder and should be treated mainly with antipsychotics, while obsessive jealousy resembles obsessive-compulsive disorder and should be treated with SSRIs and cognitive-behavioural therapy.
Jealousy is an emotion reflecting weakness and desperation. Females are predominately associated with emotion, which may be why they are thought of as being more jealous than males. Males are generally associated with “tougher” forms of emotion, such as anger.
Plasma testosterone and cortisol concentrations were higher during the jealousy condition. During the jealousy condition, duration of time spent looking across at the pair mate next to a stranger male was associated with higher plasma cortisol concentrations.
Jealousy generally refers to the thoughts or feelings of insecurity, fear, and concern over a relative lack of possessions or safety. Jealousy can consist of one or more emotions such as anger, resentment, inadequacy, helplessness or disgust.
Jealousy is a normal human emotion that everyone experiences from time to time. It often stems from romantic relationships and can be feelings of unhappiness, anxiety, and anger caused by a belief or fear that your partner may be unfaithful or interested in someone else.
Remember, our jealousy often comes from insecurity in ourselves – a feeling like we are doomed to be deceived, hurt or rejected. Unless we deal with this feeling in ourselves, we are likely to fall victim to feelings of jealousy, distrust or insecurity in any relationship, no matter what the circumstances.
If you're the target of jealousy, you may feel like someone (usually a partner or friend) is trying to control your life. They might do things such as check up on you, try to tell you what to do (or not do) and how to act, or limit your contact with friends and coworkers.
In the real world, making your ex jealous is a problematic behavior that shouldn't be idolized or mimicked. According to psychodynamic therapist Claire McRitchie, the behavior is actually a form of control and self-protection, whether or not the person exhibiting it knows this, and ultimately, it's not healthy.
“Another common red flag is jealousy and distrust,” says Trueblood. “Often, the red flag of a very insecure partner looks like attentiveness at the start of a relationship, but there's an underlying control problem beneath all the attention.
Although an individual may present with morbid jealousy, the underlying psychiatric problems may show major illnesses like bipolar mania in up to 15% and schizophrenia 20%, among other diagnoses like depression and alcohol-related disorders. Morbid jealousy may not only be delusional, but also obsessional in nature.