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Don't sit for long hours, it may increase dementia risk, say scientists

The researchers recruited 35 people (aged between 45 and 75 years) for the study

Press Trust of India  |  Los Angeles 

Don't sit for long hours, it may increase dementia risk, say scientists

for too long may increase the risk of in middle-aged adults, according to scientists, including one of Indian origin.

In a study published in the journal PLOS One, the researchers recruited 35 people (aged between 45 and 75 years).

The researchers, including from the University of California, in the US, asked the participants about their physical activity levels and the average number of hours per day they spent over the previous week.

Each person had a high-resolution scan, which provides a detailed look at the medial temporal lobe, or MTL, a brain region involved in the formation of new memories.

The researchers found that sedentary behaviour is a significant predictor of thinning of the MTL and that physical activity, even at high levels, is insufficient to offset the harmful effects of for extended periods.

MTL thinning can be a precursor to cognitive decline and in middle-aged and older adults.

Reducing sedentary behaviour may be a possible target for interventions designed to improve brain in people at risk for Alzheimer's disease, said Siddarth.

This study does not prove that too much sitting causes thinner brain structures, but instead that more hours spent sitting are associated with thinner regions, he said.

First Published: Sat, April 14 2018. 22:51 IST
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