HealthDay (1/2, Thompson) reported a study found that “circadian rhythms that are weaker and more fragmented are tied to an increased risk of dementia,” and that “people with weak circadian rhythms have a more than doubled risk of dementia.” Study participants “wore small heart monitors stuck to their chest for an average of 12 days.” They were “followed for around three years on average, during which 176 were diagnosed with dementia.” Researchers observed that “106 of 727 people in the weak circadian group developed dementia, compared to 31 of 728 people in the strong circadian group, the study found. That amounted to a nearly 2.5 times higher risk of dementia among people with weaker circadian rhythms, researchers estimated.” Additionally, “dementia risk also was higher among people whose circadian rhythms peaked later in the afternoon.” The study was published in Neurology. (SOURCE: APA Headlines)