Nightmares are often brushed off as harmless bad dreams, something to laugh about or forget by morning. But what if those unsettling nighttime experiences are actually sending important signals about both mental and physical health? Emerging research suggests that frequent nightmares may be closely linked to real bodily symptoms, especially those involving the heart, revealing that what happens during sleep can have powerful effects long after waking up.
The findings of a Brazilian study study suggest that frequent nightmares may be more than just a sign of stress or poor mental health — they could also be linked to real physical symptoms, particularly symptoms related to the heart, such as chest pain or irregular heartbeat. This means nightmares should not always be dismissed as “just bad dreams.”
One key implication is for healthcare professionals. Doctors, psychologists, and sleep specialists may need to ask more about nightmares when people report sleep problems or unexplained physical symptoms. Someone who frequently experiences nightmares might be at higher risk of ongoing sleep disruption and physical discomfort, even if they do not meet the criteria for anxiety or depression.
For individuals, the study highlights that persistent nightmares can affect both mental and physical wellbeing. People who are prone to nightmares may be more sensitive to stress and bodily sensations, which could increase awareness of physical symptoms. Recognising this link may encourage people to seek help for nightmares rather than ignoring them.
The results also suggest that treating nightmares directly — for example through sleep-focused therapies, stress management, or psychological interventions — may help reduce not only distressing dreams but also related physical symptoms. This could improve overall quality of life.
Finally, the study supports the idea that the mind and body are closely connected. Nightmares may reflect how the body reacts to emotional stress during sleep, showing that sleep health is an important part of overall health. More research is needed, but the findings underline the importance of taking nightmares seriously in both clinical and everyday settings.
Source: Kelly W. E. (2023). Taking Heart: Cardiac Symptoms and Nightmares Differentiate Nightmare Proneness and Psychological Distress among Young Adults. Sleep science (Sao Paulo, Brazil), 16(1), 59–67. https://doi.org/10.1055/s-0043-1767752
