Recently identified brain rhythm during sleep may play a crucial role in clearing neurotoxic waste and protecting against dementia. Unlike wakefulness, when major neuromodulators such as norepinephrine, acetylcholine, serotonin, and dopamine act relatively independently, sleep synchronizes their activity into coordinated oscillations occurring approximately every 50 seconds. These rhythmic fluctuations are […]
A longitudinal study using data from the Alzheimer’s Disease Neuroimaging Initiative found that omega-3 fatty acid supplementation was associated with accelerated cognitive decline in older adults, challenging the common belief that omega-3 universally protects brain health. Participants taking omega-3 supplements showed faster worsening in MMSE, ADAS-Cog13, and CDR-SB scores over […]
Accelerometer-derived sleep-wake cycle patterns were associated with a higher risk of future dementia and modestly improved dementia prediction beyond traditional risk factors, with predictive value comparable to APOE genotype when added to an age-only model. In this large prospective cohort study involving more than 53,000 older adults from the UK […]
Two-dose recombinant zoster vaccination (RZV) was associated with a significantly lower risk of new-onset dementia, including Alzheimer’s disease (AD) and vascular dementia (VD), among U.S. adults aged 65 years or older. In this Medicare-based study, individuals who received RZV were matched to unvaccinated counterparts by age, sex, and race/ethnicity, all […]
Higher consumption of ultra-processed foods (UPFs) is associated with poorer attention and increased modifiable dementia risk, independent of overall diet quality. In this cross-sectional study of 2,192 dementia-free Australian adults aged 40–70 years, dietary intake was assessed using a validated food frequency questionnaire and categorized by the Nova classification system, […]
Anemia was associated with higher levels of Alzheimer disease (AD) blood biomarkers and a markedly increased long-term risk of dementia, with the highest risk observed when low hemoglobin coexisted with elevated neurodegenerative markers. In a population-based cohort from the Swedish National Study on Aging and Care in Kungsholmen, 2,282 dementia-free […]
Greater adherence to healthful plant-based diets was associated with a lower risk of Alzheimer disease and related dementias (ADRDs), whereas unhealthy plant-based diets were linked to increased risk, with dietary changes over time further influencing outcomes. In the prospective analysis of the US Multiethnic Cohort Study including over 92,000 diverse […]
A new study investigating the link between cerebral microbleeds (CMBs) and dementia has found that the location and pattern of these brain lesions are critical to assessing risk. Analyzing data from over 1,500 participants in the ARIC-Neurocognitive Study, researchers classified individuals based on their CMB patterns—lobar, subcortical, or mixed—and tracked […]
A large natural experiment study in Ontario, Canada, found that receiving the live attenuated herpes zoster vaccine significantly reduced the risk of a new dementia diagnosis by approximately 18% in adults aged 70 and older, providing the strongest evidence to date for a potential causal protective effect. The research leveraged […]
Higher physical activity in midlife and late life—but not early adulthood—is associated with a significantly lower risk of both all-cause and Alzheimer disease dementia. In this prospective analysis from the US Framingham Heart Study Offspring cohort, 1526 early-adult, 1943 midlife, and 885 late-life participants were followed for up to 37 […]