Summary: Recalling past experiences that provoked anger can temporarily impair blood vessel function, a vital factor for healthy circulation. In a randomized study of 280 adults, researchers induced feelings of anger, anxiety, sadness, or a neutral state and measured subsequent vascular responses to determine how these emotions affect the lining of blood vessels.
Results showed that only anger—when evoked by remembering a personal event—produced a short-term reduction in the ability of blood vessels to dilate. This impairment lasted up to about 40 minutes after the emotional trigger. Anxiety and sadness did not produce statistically significant changes in vascular function in this experimental setting. These findings highlight the specific cardiovascular risk that acute anger may pose and underscore the value of emotional regulation for heart health.
Key Facts:
- Anger has a unique effect: Among the negative emotions tested, anger was the only emotion that led to a measurable reduction in endothelium-dependent vasodilation, pointing to distinct cardiovascular consequences of anger compared with anxiety or sadness.
- Experimental design: The randomized trial exposed participants to one of four eight-minute tasks—anger recall, anxiety recall, sadness-inducing reading, or a neutral counting task—and used noninvasive measures to track blood flow and vessel dilation before and at multiple intervals after the tasks.
- Health relevance: Because impaired vascular dilation is associated with atherosclerosis and increased cardiovascular risk, managing intense emotional states such as anger may be an important component of preventing heart disease and stroke.
Source: American Heart Association
A short episode of anger prompted by recalling a past experience may reduce blood vessels’ ability to relax and increase the risk of impaired blood flow, according to research published in the Journal of the American Heart Association.
Impaired vasodilation—the inability of blood vessels to widen adequately—has been linked in prior studies to a higher likelihood of developing atherosclerosis and, ultimately, heart disease or stroke.
“Impaired vascular function is linked to an increased risk of heart attack and stroke,” said lead author Daichi Shimbo, M.D., professor of medicine at Columbia University Irving Medical Center. Observational studies have previously associated negative emotions, particularly anger, with cardiovascular events, while anxiety and sadness have been less consistently studied.
This randomized study tested whether experimentally evoked anger, anxiety, or sadness would acutely affect endothelial function compared with a neutral condition. A total of 280 adults were randomly assigned to one of four eight-minute emotional tasks: recalling an angering personal memory; recalling an anxiety-provoking memory; reading sentences designed to evoke sadness; or repeatedly counting to 100 to induce a neutral emotional state. The protocol used is part of the Putative mechanisms Underlying Myocardial infarction onset and Emotions (PUME) study previously described by the investigators.
Researchers evaluated markers of endothelial health—measuring blood flow and vessel dilation as well as circulating biomarkers related to endothelial injury and repair—before and at several time points after the emotional tasks. Measurements were taken at baseline (0 minutes) and then at 3, 40, 70, and 100 minutes after the task.
- Recalling anger produced a measurable impairment in endothelium-dependent vasodilation that persisted from immediately after the task up to 40 minutes later, and then returned to baseline.
- Tasks designed to evoke anxiety or sadness did not produce statistically significant changes in the vascular measures at any of the time points assessed.
“Eliciting an angry emotional state produced temporary vascular dysfunction, though the specific biological mechanisms remain to be clarified,” Dr. Shimbo said. Further study of how anger affects the endothelium could identify targets for interventions to reduce cardiovascular risk in people prone to intense anger responses.
An American Heart Association scientific statement on psychological health and the mind-heart-body connection emphasizes that mental well-being affects cardiovascular risk factors and outcomes. Glenn Levine, M.D., FAHA, noted that acute emotional states, including intense anger or stress, can precipitate cardiovascular events and that vascular endothelium plays a central role in ischemic and atherosclerotic disease. This randomized experimental study adds controlled evidence that anger can acutely impair endothelial function.
Study background and details:
- The PUME randomized controlled study was conducted from August 2013 to May 2017.
- Participants were recruited from the community around Columbia University Irving Medical Center and were healthy adults aged 18 or older with no history of cardiovascular disease, major metabolic conditions, or diagnosed mental health disorders, and were not taking prescription medications or supplements and were nonsmokers.
- The average participant age was 26 years; roughly half identified as women. Racial and ethnic composition included approximately 40% White, 29% Hispanic/Latino, 19% Asian, and 14% Black participants.
- Vascular function was assessed using finger probes that detect arterial blood flow changes in the non-dominant forearm, alongside blood sampling for biomarkers of endothelial injury and circulating progenitor cells involved in vascular repair.
- Before testing, participants rested quietly for 30 minutes in a controlled setting. Blood pressure, heart rate, vasodilation measures, and blood samples were taken before and after the emotional task.
Limitations noted by the investigators include the study’s young, healthy sample and the controlled laboratory setting, which may limit generalizability to older adults or those with chronic conditions who take medications. The research measured short-term effects of induced emotions and does not address long-term outcomes.
Co-authors, disclosures, and funding details are reported in the full manuscript.
About this emotion and cardiovascular disease research news
Author: John Arnst
Source: American Heart Association
Contact: John Arnst – American Heart Association
Image: The image is credited to Neuroscience News
Original Research: Open access.
“Translational Research of the Acute Effects of Negative Emotions on Vascular Endothelial Health: Findings From a Randomized Controlled Study” by Daichi Shimbo et al. Journal of the American Heart Association
Abstract
Translational Research of the Acute Effects of Negative Emotions on Vascular Endothelial Health: Findings From a Randomized Controlled Study
Background
Provoked anger has been associated with higher incidence of cardiovascular events, but the acute biological mechanisms linking anger and other core negative emotions—anxiety and sadness—to cardiovascular disease are not fully understood. This study aimed to test whether brief provocation of anger and, secondarily, anxiety or sadness would adversely affect endothelial cell health.
Methods and Results
Healthy adult participants (n=280) were randomized to an eight-minute anger recall task, depressed mood recall task, anxiety recall task, or an emotionally neutral condition. Measures before and after the tasks included endothelium-dependent vasodilation (reactive hyperemia index), circulating endothelial cell-derived microparticles, and circulating bone marrow–derived endothelial progenitor cells.
A significant group-by-time interaction was observed for anger versus the neutral condition on change in reactive hyperemia index from baseline to 40 minutes (P=0.007). The anxiety versus neutral comparison approached significance (P=0.054), while the sadness versus neutral comparison did not reach statistical significance (P=0.160). There were no consistent group-by-time interactions for the endothelial microparticles or progenitor cells from baseline to 40 minutes for any emotional condition.
Conclusions
In this randomized controlled experiment, a brief provocation of anger produced an adverse effect on endothelial health by impairing endothelium-dependent vasodilation. These findings support a targeted link between acute anger and transient vascular dysfunction and encourage further research into mechanisms and potential interventions.