To explore the relationship between psychological stress and masticatory muscle pain, we created a communication stress animal model to determine whether psychological stress could induce increased mechanical sensitivity in masticatory muscles and to study the changes of mechanical nociceptive thresholds after stress removal. Forty-eight male Sprague-Dawley rats were divided into a control grou...

Background Coping, the cognitive and behavioral effort required to manage the effects of stressors, is important in determining psychological stress responses (ie, the emotional, behavioral, and cognitive responses to stressors). Coping was classified into categories of emotional expression (eg, negative feelings and thoughts), emotional support seeking (eg, approaching loved ones to request en...

Objectives: We aimed to assess psychological stress status among Iranian patients with cancer compared with non-cancer individuals. Patients and Methods: In a case-control study one hundred consecutive cancer patients who referred to Fatemieh hospital in Semnan, Iran (regardless of the type of cancer and its stage) were enrolled. One hundred matched non-cancer individuals were selected as con...

Stress has long been known to increase susceptibility to health disorders. In 2009, American Psychological Association further established association of stress to serious health problems. However, a quantitative and accurate way to evaluate and estimate stress status of individuals is still a big challenge. It has been shown, in large animal models using cattle, that psychological stress can b...

OBJECTIVE Positive affect is associated with longevity; according to the stress-buffering hypothesis, this is because positive affect reduces the health harming effects of psychological stress. If this mechanism plays a role, then the association between positive affect and mortality risk should be most apparent among individuals who report higher stress. Here, we test this hypothesis. METHOD...

Vulnerable people may become socially contiguous via assortative relating, and thus simultaneously susceptible to the effects of shared life stress. To test this possibility, 138 undergraduates and their roommates completed questionnaires on suicidality and stress. Consistent with an assortative relating process, roommates who chose to room together were more similar on a suicide index than wer...

background: masticatory ability as a subjective response to masticatory function indicates patients’ perception of their mastication. to the best of our knowledge, there has been no study on association between masticatory ability and psychological status. this study investigated the association between self-assessed masticatory ability (sama) and psychological status among a large sample of ir...