Scientists discover optimal amount of sleep to reduce dementia risk

A new scientific study suggests that sleeping between 7 and 8 hours a night may be the optimal amount to reduce the risk of developing dementia in old age.

The research, conducted by a team at York University in Canada, analyzed data from 69 previous studies involving about 4.5 million people. The researchers examined the link between dementia and three key lifestyle factors: sleep duration, physical activity and time spent sitting.

According to the results, individuals who sleep less than 7 hours a night have about an 18% higher risk of dementia, while those who sleep more than 8 hours show an increase of about 28% in this risk.

In addition to sleep, the study highlights that regular physical activity and reduced sitting time are also associated with a lower risk of the disease. Less than 150 minutes of physical activity per week and prolonged sitting are considered factors that may increase risk.

The researchers emphasize that these results do not show a direct cause-and-effect relationship, but only a statistical association. They also warn that excessive sleep may in some cases be an early sign of neurodegenerative diseases, such as Alzheimer's.

According to them, a healthy lifestyle that includes regular sleep, physical activity, and less sitting can help improve brain health and delay the onset of dementia.

However, experts emphasize the need for further long-term studies to more precisely understand the relationship between these factors and dementia risk./ CNA

07:29 Shëndeti

The old drug that continues to revolutionize medicine even after 6 decades

After more than six decades of use, metformin remains one ...

07:52 Shëndeti

Experts warn: This habit can worsen insomnia

Insomnia is one of the most prevalent health problems toda...

07:31 Shëndeti

New study: Even low alcohol consumption can negatively affect the brain

A recent study conducted by researchers in the United Stat...

17:57 Shëndeti

5 mënyra të lehta për të përgatitur ushqim të shëndetshëm në shtëpi

Gatimi i përditshëm shpesh mund të duket i vështirë, që kë...

19:21 Shëndeti

Study: Weight gain at a young age linked to higher risk of death in the future

A new scientific study has raised concerns about the influ...

07:40 Shëndeti

Studies: Healthy eating is not just about what we eat

When most people think about eating healthy, they focus pr...

07:35 Shëndeti

The food that Japanese people eat every day and protects heart health

One of the foods that the Japanese consume very often and ...

07:09 Shëndeti

HIV Report 2025/ Albania faces a new wave of infections, record since 2016

After a decade of fluctuations and stabilization, Albania ...

18:23 Shëndeti

Here's what happens to your body if you eat broccoli every day

Here's what happens to your body if you eat broccoli every...

22:33 Shëndeti

Tinnitus may be linked to an important chemical in the brain

A recent study by scientists in the United States and Chin...

17:51 Shëndeti

Five simple strategies that can improve memory

Brain researchers emphasize that human memory depends not ...

07:19 Shëndeti

'Harvard test', a way to detect predisposition to hypertension

Many people may be more predisposed to hypertension, and s...

17:12 Shëndeti

3 health benefits of eating strawberries

Strawberries are not only a delicious fruit, but also extr...

20:01 Shëndeti

7 fruits rich in magnesium that the body needs

Magnesium is one of the most important nutrients for our b...

14:55 Shëndeti

Study links two simple eating habits to sustainable weight loss

A new study from the Barcelona Institute for Global Health...

09:45 Shëndeti

Some antibiotics can increase inflammation and make infections harder to treat.

A new study suggests that some antibiotics, in addition to...

09:32 Shëndeti

Study: Drinking water can raise blood pressure

A new study has found that an unexpected source of salt, d...

17:11 Shëndeti

4 amazing brain benefits of chia seeds

Chia seeds are a highly nutritious food, known for their h...

17:47 Shëndeti

Dermatologists explain the reasons/ Here's why you should wash new clothes before wearing them

We often hear that you should never wear new clothes befor...

09:50 Shëndeti

This tiny wildflower could be a secret weapon against superbugs

A new scientific study suggests that a plant used for cent...