Recent
New research shows that adjusting the body's circadian rhythm by inhibiting the protein REV-ERBα can increase NAD+ and reduce toxic tau buildup in mice, leading to brain protection and potential new Alzheimer’s therapies.
November 1, 2025
Source:
MIT News
Altering Body Rhythms for Brain Protection
Researchers have discovered that changing the body's natural sleep-wake rhythm, specifically by targeting a protein called REV-ERBα, protects the brain in mouse models of Alzheimer's disease (ScienceDaily). This intervention boosts NAD+, a molecule crucial for brain cell energy and repair, while reducing toxic tau protein accumulation—the latter being a hallmark of Alzheimer’s pathology (Popular Mechanics).
Key Findings
REV-ERBα suppression led to higher NAD+ and less tau buildup.
Circadian disruption is both a symptom and a driver in Alzheimer’s.
Manipulating circadian proteins shows promise for brain health.
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Source:
MIT News
Mechanisms Behind the Discovery
The circadian protein REV-ERBα regulates daily rhythms of metabolism and inflammation, and its inhibition in the brain has shown neuroprotective effects in mice (Washington University in St. Louis).
DNA Repair and Brain Aging
NAD+ decline is linked to aging and neurodegeneration.
Many supplements attempt to raise NAD+, but animal models primarily support these benefits so far (ScienceDaily).
Alzheimer’s Gene Rhythms
About half of genes related to Alzheimer’s risk are regulated by circadian rhythms, emphasizing the potential impact of healthy sleep-wake cycles on neurodegeneration (Washington University in St. Louis).
Read More
Source:
Popular Mechanics
Therapeutic Outlook and Limitations
Researchers are exploring pharmacological interventions to manipulate the circadian clock as a strategy to combat neurodegeneration. While no drugs directly targeting circadian proteins for Alzheimer’s are approved, the field is advancing rapidly (AlzForum).
Early Diagnosis and Biomarkers
Efforts focus on identifying biomarkers linked to circadian genes to permit earlier and more targeted interventions (ScienceDaily).
Research Challenges
Note: Most data comes from animal models.
Human trials are needed to confirm if resetting the circadian rhythm significantly delays or prevents Alzheimer’s progression (Popular Mechanics).
Recent international guidelines highlight the growing importance of circadian and sleep research in addressing dementia and healthy aging.
How does altering the body's natural rhythm specifically protect the brain from Alzheimer's damage?
Changing circadian rhythms by inhibiting the protein REV-ERBα raises NAD+ levels and reduces tau protein buildup, both of which help protect brain cells from Alzheimer’s-related damage.
What role does the circadian protein REV-ERBα play in Alzheimer's progression?
Can increasing NAD+ levels through other means also help prevent Alzheimer's?
How do disrupted circadian rhythms contribute to the early symptoms of Alzheimer's?
What are the potential therapeutic treatments that could manipulate the body's internal clock to prevent Alzheimer's?
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