Afternoon Nap Increases Risk of Heart Diseases and Diabetes

Afternoon Nap Increases Risk of Heart Diseases and Diabetes

A new research has revealed that afternoon nap can be particularly responsible for raising the chances of developing cardiovascular diseases and diabetes. Furthermore, feeling sleepy during daytime must be considered as a caution for developing metabolic syndrome, which is the medical terminology used for a combination of diabetes, high blood pressure and obesity. In the UK, metabolic syndrome is likely to have caught up to 15 million people, who are on a higher risk level of suffering from heart problems or stroke.

The meta-analysis involved the evaluation of information from 21 different observational researches that involved 307,237 participants belonging to Asian and Western cultures. The research concentrated on establishing a relationship of elongated naps and feeling sleepy during daytime with heart disease and type 2 diabetes. The participants were questioned about their feeling sleepy during daytime and naps during daytime. The researchers then examined their replies in the light of their history of type 2 diabetes and obesity.

The outcome suggested that participants who took nap of less than 40 minutes did not increase their risk of having metabolic syndrome. However, the risk of developing the syndrome increased drastically once the duration of the nap went beyond 40 minutes.


The risk of developing the syndrome increased by 50% among those people who took a 90-minute nap. The risk increased by same amount for those feeling excessively tired in daytime. Furthermore, a nap of less than 30 minutes slightly reduced the risk of suffering from metabolic syndrome.

"Taking naps is widely prevalent around the world. So, clarifying the relationship between naps and metabolic disease might offer a new strategy of treatment, especially as metabolic disease has been increasing steadily all over the world", said lead author Tomohide Yamada from the University of Tokyo. An earlier research revealed that a more than 60 minute nap increased cardiovascular diseases by 82% and deaths by 27%.


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