Study: Long-term smoking leads to cognitive decline

The bad news is that if you have been smoking for years, you may have caused the thinning of the cerebral cortex – a vital part of your brain.

The cortex is the outer layer of the brain in which critical cognitive functions such as memory, language and perception take place, and a thinner brain cortex is associated with adult cognitive decline.

The good news is that if you kick the habit now, you may make it possible for your body to restore at least part of the thickness of the cortex.


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