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There is a plethora of research [on / in] the potential harm of the Internet. However, new research [suggestive / suggests] that spending time online could be good for the mental health of [olden / older] people. A study conducted [at / by] researchers from New York University found that [regular / regularly] Internet use could reduce the risk of dementia in those over 50. Study co-author Dr Virginia Chang explained [why / what] there could be a link [between / among] being online and better mental health. She wrote: "Online engagement may help to develop and maintain cognitive [reverse / reserve] , which can in turn compensate [to / for] brain aging and reduce the risk of dementia." The study concluded that "regularly using the internet may be associated with cognitive [longevity / lengthening] ".

Researchers analyzed data from an American health and [retirement / retiring] study. This research involved questioning 18,154 adults over the [old / age] of 50 every two years for 16 years. All of the [participants / participates] were dementia-free at the start of the research. Everyone was asked about their [physical / physique] and mental wellbeing, and about how long they spent [interaction / interacting] with the Internet. The researchers [discovered / discovery] that those who used the Internet for up to two hours a day were [half / halved] as likely to be diagnosed with having signs of dementia than [those / them] who were never online. The research also found that [excessive / recessive] Internet use (of 6 to 8 hours a day) may [excruciate / exacerbate] the risks of developing dementia.