Health experts are expressing concerns about a troubling indication during sleep that could point to a serious neurological condition. Dealing with sleep disturbances is a common issue for many individuals, with the NHS reporting that one in three people will encounter sleep problems at least once in their lives.
Moreover, recurring nightmares could serve as an early alert for dementia. A 2022 study published by The Lancet proposed that “distressing dreams” might serve as a preliminary sign of the condition in individuals without prior cognitive decline.
The study, which spanned 13 years and involved 605 middle-aged volunteers, examined the likelihood of all-cause dementia in 2,600 elderly participants who initially displayed no signs of the condition for up to seven years.
Researchers correlated participants’ sleep patterns with subsequent dementia diagnoses and found a notable link between the frequency of distressing dreams and an increased risk of cognitive decline in middle-aged individuals, as well as a heightened risk of all-cause dementia in older adults.
Specifically, middle-aged participants experiencing distressing dreams on a weekly basis at the study’s onset were four times more likely to experience cognitive deterioration. In the case of older adults, those experiencing distressing dreams were twice as likely to develop dementia.
The research team highlighted that the relationship between distressing dreams and cognitive outcomes was statistically significant mainly among men. They concluded that distressing dreams could predict cognitive decline and all-cause dementia in middle-aged and older adults without cognitive impairment or Parkinson’s disease, especially in men, potentially aiding in the identification of individuals at risk of dementia and enabling early prevention strategies.
Additionally, the Alzheimer’s Society pointed out that individuals with dementia may suffer from REM behavioral sleep disorder (RBD), leading them to act out their dreams during REM sleep phases. This behavior may involve violent actions, involuntary movements, and potential injury if they fall out of bed while sleeping next to a partner.
RBD not only results in daytime exhaustion but also poses a risk of harm if the individual falls from the bed. Early warning signs of dementia, according to the NHS, include forgetfulness, difficulty concentrating, struggles with daily activities, communication challenges, confusion with time and place, mood changes, among others.
If you or someone you know shows signs of dementia, seeking prompt medical advice is crucial.