We have all heard that a lack of sleep ruins health. But did you know that sleeping more than necessary is equally dangerous? Recent research warns of a direct link between oversleeping and heart disease.

What is the Optimal Amount of Sleep?

Previously, it was believed that adults needed 7 to 9 hours of sleep. However, according to a recent study published in 'Nature Aging' Adults who sleep for 7 continuous hours exhibit better memory and decision-making skills.This duration is considered the most ideal for balancing both physical and mental health.

Risks of Oversleeping (More than 9 Hours)

If you regularly sleep for more than 9 hours a day, your body may fall prey to the following issues:

1. Heart Disease and Diabetes: Chronic oversleeping paves the way for Type-2 diabetes and cardiovascular diseases.

2. Mental Health: There is a higher likelihood of depression, anxiety, and a decline in cognitive abilities.

3. Inflammation: Internal inflammation can occur within the body’s organs.

4. Premature Mortality: Studies have noted that the risk of death is slightly higher for those who sleep over 9 hours compared to average sleepers.

What Happens if You Get Too Little Sleep? (For those sleeping only 5-6 hours)

Those who sleep only 5–6 hours due to work pressure may notice these symptoms:

* A drop in immunity levels.

* Memory loss and a lack of concentration.

* An increase in obesity and blood pressure.

Is 'Weekend Catch-up Sleep' Dangerous?

Many people try to compensate for lack of sleep during the week by sleeping extra on Saturdays and Sundays. But this is a mistake! It disrupts the body’s 'Circadian Rhythm' (internal biological clock). Research indicates that the risk of stroke and heart attack increases by 26% in such individuals.

Expert Advice: Consistency is Key

The regularity of your sleep is just as important as the duration.

* Follow a Schedule: Make it a habit to go to bed and wake up at the same time every night and morning.

* 7 Hours is Enough: 7 hours of uninterrupted, deep sleep is a "magic bullet" for longevity and mental sharpness.

If you feel exhausted even after sleeping for 9 hours, it could be a sign of poor sleep quality or an underlying medical condition. Consult a specialist immediately.