A recent study found that up to 19% of dementia cases may be attributable to impaired vision. The study, published in JAMA Ophthalmology, showed that vision loss may have even more of an impact on the risk of dementia than previously thought. Hearing loss is also considered a modifiable risk factor for dementia, supporting the notion that sensory engagement is critical for brain health.

Different parts of the United States have different rates of Alzheimer’s diagnoses. Scientists from the University of Michigan determined that regional variation was due to risk factors related to the specific population as well as the intensity of new cases diagnosed.

Recent research has spotlighted melatonin as a potential ally in the fight against Alzheimer’s disease. Scientists from Zhejiang University and Uppsala University published a comprehensive review in the journal Molecular Psychiatry in August 2024, exploring how this natural hormone might protect brain health.

Recent studies highlight the potential role of omega-3 fatty acids in protecting brain health, especially among older adults. These essential fats, found in fatty fish like salmon, offer benefits for heart health, inflammation, and brain function. Now, two studies suggest they may also benefit individuals at higher risk for cognitive decline, such as carriers of the ε4 allele of the apolipoprotein E gene (APOE4).

Breakthroughs in Alzheimer’s disease research offer hope for the successful treatment – and elimination – of the disease. This was the finding of New Scientist journalist Graham Lawton, who reviewed the history and status of research on dementia and Alzheimer’s disease. In particular, exciting new Alzheimer’s vaccine research holds promise for preventing Alzheimer’s disease.