A new study suggests an unusual link between hyperthyroidism and several problematic personality traits, such as high impulsivity, lack of empathy and manipulative tendencies. Experts emphasize that these are preliminary findings and not automatic labels or diagnoses.
Hyperthyroidism – about ten times more common in women than men – occurs when the thyroid gland produces too many hormones. This condition is accompanied by symptoms such as mood swings, insomnia, rapid heartbeat, irritability and anxiety.
According to the study, people with hyperthyroidism were found to have higher levels of what psychology calls “dark personality traits,” including psychopathy, Machiavellianism, and sadism, compared to individuals with normal thyroid function. The researchers emphasize that this does not mean that these people are necessarily dangerous, but that they may be more prone to antagonism and reduced empathy.
The study was conducted by Ashkelon Academic College in Israel and involved 154 adults who completed online questionnaires. Of these, 49 had hyperthyroidism, 52 had hypothyroidism, and 53 had no thyroid disorder. Participants were asked about attitudes and behaviors related to manipulation, impulsivity, lack of empathy, and enjoyment of dominating others.
The results showed that the hyperthyroid group scored higher on questions related to impulsivity, emotional coldness, sadism and cynicism. According to the authors, these findings are consistent with previous studies linking high levels of thyroid hormones (T3 and T4) to increased aggression, irritability and impulsive behavior.
Scientists explain that hyperthyroidism increases the activity of the central nervous system, creating a state of “hyper-arousal” that can affect emotional stability and interpersonal relationships. The chronic anxiety, irritability, and emotional instability common in this condition can exacerbate antagonistic or manipulative behavior.
In the UK, it is estimated that around 2.7 percent of women and 0.23 percent of men suffer from hyperthyroidism, usually between the ages of 20 and 40. Treatment includes medications that inhibit hormone production, radioactive iodine therapy or, in some cases, surgery.
The study authors emphasize that recognizing the psychological impact of hormonal disorders can help with earlier and more complete treatment. “Integrating psychological support with medical treatment can significantly improve outcomes for patients,” they conclude.
Experts warn that these findings should not be used for stigmatization, but as an impetus for a more comprehensive approach to health, where mental and hormonal well-being are treated together. /GazetaExpress/