A health-content creator recently raised concerns about DeepSeek’s reliability after the AI generated apparently fabricated scientific evidence while helping her write a social media post about chewing and cognitive health in older adults. Asked to base the content on scientific data, DeepSeek claimed that elderly people who chewed more than 30 times a day had a 42 percent lower risk of cognitive decline and provided a purported research citation. The creator, who had reviewed extensive literature on the subject, did not recognize the finding and searched multiple academic databases but found no corresponding study.
When she asked DeepSeek again for scientific evidence linking chewing to improved cognition, the AI generated a longer list of purported research findings, including a claim that chewing was more effective than aerobic exercise twice a week in preventing dementia. Unable to verify the claims, she asked DeepSeek to provide the original English-language papers.
DeepSeek then acknowledged that some of its earlier statements were problematic but supplied three supposedly authoritative studies, including paper titles and DOIs. The creator searched for each title and DOI but could not locate any of the papers as described. Some of the DOIs did not exist, while others corresponded to completely different papers. She concluded that the scientific evidence previously provided by DeepSeek was largely fabricated.
Source: Epoch Times, August 22, 2026
https://www.epochtimes.com/gb/26/8/21/n14834332.htm