Lack of Sleep in Middle Age Increases the Risk of Dementia

5th February 2025

1 minute read

Lack of Sleep in Middle Age Increases the Risk of Dementia

A recent study has warned that getting less sleep than recommended in middle age may increase the risk of developing dementia later in life.

Researchers found that sleeping less than six hours per night at ages 50 and 60 was associated with a 30% increased risk of dementia.

Published in PubMed, the study analyzed data from 7,959 participants, examining the relationship between sleep duration and dementia incidence over a period of 25 years.

The findings revealed that chronic sleep deprivation (less than seven hours) in middle age was linked to a higher risk of cognitive decline, regardless of social and health factors.

Researchers emphasized that quality sleep plays a crucial role in maintaining brain health, as it enhances memory function and reduces the buildup of neurological toxins associated with neurodegenerative diseases like dementia. Moreover, sleep deprivation affects the nervous system, increasing the risk of inflammation and nerve cell damage.

According to the Alzheimer’s Association, there is a difference between normal aging and dementia symptoms. It is natural to experience minor memory difficulties as one ages, such as forgetting unfamiliar names or struggling to absorb new information. However, dementia is characterized by severe memory loss, confusion, language and comprehension issues, and significant behavioral changes that disrupt daily life.

Experts stress that early diagnosis can help better manage symptoms and improve quality of life. Anyone noticing significant changes in cognition or behavior is encouraged to consult a specialist for a proper evaluation.

Researchers highlight the importance of getting at least seven hours of sleep per night, especially in middle age, to maintain brain health and reduce the risk of dementia as one ages.