Researchers asked 8,800 people over age 50 to take a series of memory tests, which were repeated four years later, and again eight years later. They found that any risk factor which elevates the chance of stroke or heart attack causes mental degradation.
While the study initially sought to measure individual risk factors’ correlation with declining brain functions, researchers concluded that all cardiovascular risks have a similar end result. However, the study found that smoking, more than any other factor, “was consistently associated with lower performance on all” the memory tests.
In other words, the study explained, among other bad habits, smoking actually “rots” the brain.
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