Connection between prolonged sleep and vascular dementia

In a significant study conducted in Wales, United Kingdom, researchers have found a strong correlation between excessive daytime sleepiness and the development of vascular dementia over a period of 10 years.

Vascular dementia, a condition that affects thinking, memory, and behavior, is often characterised by disrupted blood flow to the brain. This disruption can lead to excessive sleepiness, which may occur at any stage of vascular dementia.

The study, involving males from the United Kingdom, revealed that by the end of the study, 7.6% of the participants had signs of dementia. Around 14.3% of participants, however, showed signs of cognitive impairment without dementia, or mild cognitive impairment (MCI).

Depression is common in those with vascular brain conditions and can cause persistent fatigue and changes in sleep. Routine changes, such as avoiding caffeine and having a relaxing nighttime routine, may help reduce daytime napping. If sleepiness is a side effect of medication, a doctor can change the dosage or medication.

For those experiencing excessive daytime sleepiness that is not due to medication, there are other potential solutions. Melatonin, a hormone that regulates sleep-wake cycles, may help if routine changes do not work. However, it is essential to consult a doctor before taking any supplements, as they may interact with other medications.

In some cases, medications such as Modafinil (Provigil) may improve drowsiness in people with vascular dementia who also have Parkinson's disease. Unfortunately, there are no specific drugs that treat excessive sleeping in vascular dementia specifically.

Factors influencing increased daytime sleepiness in people with vascular dementia include impaired brain blood flow causing oxygen and nutrient deficiency to brain cells, resulting in brain damage, fatigue, mood swings, and difficulties with concentration and attention. Comorbid vascular risk factors, small brain infarcts, and stroke events also contribute to these symptoms.

Anyone experiencing excessive sleepiness in the daytime should speak with a doctor for advice and potential tests to check for underlying causes. Sudden and severe changes in dementia symptoms should also prompt a visit to the doctor, as these could signify an underlying problem.

In addition to medical interventions, increasing daytime activity and light exposure may help regulate a person's sleep. Low doses of mirtazapine, a type of antidepressant, can also be a sleep aid.

Brain aging may be linked to excessive daytime sleepiness in people without dementia. Therefore, it is crucial to address sleep issues early to prevent potential complications in the future.