People who have cataracts removed are 30 percent less likely to develop dementia

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Older people who have cataracts removed may be gaining more than better vision. Research published in JAMA Internal Medicine suggests that they are nearly 30 percent less likely to develop dementia, including Alzheimer’s disease, than are people with cataracts who do not have the surgery.

The researchers noted that visual impairment has been identified as a dementia risk factor, in part because it can lead to social isolation and decreased cognitive stimulation. But by restoring vision, they wrote, cataract surgery may help delay or prevent the development of dementia.

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