The daily rhythm of genetic activity varies between individual cell types in ways that depend on their states of health, a recent study has found, revealing details on the relationship between Alzheimer's disease and our brain's operational routine.

This cycle, known as the circadian rhythm , tells us when to get out of bed and when to go to sleep, as well as keeping a host of internal biological processes running reliably on time across each 24-hour cycle.

Disrupted sleep patterns have been linked to Alzheimer's before, so researchers led by a team from the Washington University School of Medicine (WashU Medicine) took a closer look at the circadian rhythms of genes associated with the disease's risk factors.

Comparing the brains of mice with an Alzheimer's-like condition with

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