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Brain and Cognitive Health Archive
Articles
Building a "cognitive reserve" offers brain protection in old age
A 2022 study suggests that following certain healthy habits throughout life can create a "cognitive reserve" that may protect the brain from dementia. People in their 60s and 70s can still build up their reserve by pursuing a combination of brain-stimulating activities.
Cutting back on ultra-processed foods linked with lower dementia risk
People who ate large amounts of ultra-processed foods had a greater risk of later developing dementia compared with people who ate little of these foods, according to a 2022 study. Researchers estimated that switching out even 10% of ultra-processed foods for healthier options might lower one's risk.
6 myths about dementia
There are many misconceptions about dementia. One is that it's a disease. In fact, dementia is a general term describing thinking and memory skills that have deteriorated to the point of experiencing problems with daily activities. Another myth is that dementia is part of normal aging. It isn't; dementia is simply more common as people get older — just like heart disease, stroke, and cancer. Other common myths about dementia include the notions that it always appears as memory loss, it's always genetic, it causes the loss of all memories, and it's never reversible.
Can these approaches really improve memory?
Scientists are studying two novel approaches to improve memory. One approach centers on molecules in the blood and spinal fluid that appear to help improve memory. So far, experiments have been limited to lab animals. Another approach involves exposing the brain to electrical currents. A study in humans, published online Aug. 22, 2022, by the journal Nature Neuroscience, found that electrical stimulation directed at specific areas of the brain improved both working memory and long-term memory for at least a month.
What's the relationship between memory loss and driving?
Alzheimer's disease and other forms of dementia affect all the regions of the brain involved in driving, but whether or not a person should give up driving depends on the severity of the disease and the specific cognitive abilities that are impaired.
Low vitamin D levels may increase odds of dementia
A 2022 study found that low blood levels of vitamin D (under 25 nanomoles per liter) were linked with higher risks of dementia. People can boost vitamin D levels from diet, supplements, or sun exposure.
Screening for cognitive dysfunction
Occasional forgetfulness and memory lapses are often dismissed as a sign of normal aging. But if these episodes become more frequent or problematic, or if they affect daily life, older adults should consult their primary care physician, A doctor can offer an evaluation for mild cognitive impairment. This includes a brief in-office screening test of thinking skills like short-term recall, concentration, attention, ability to juggle multiple tasks, and orientation to time and place.
Sleep added to list of essential healthy heart habits
The American Heart Association added sleep to its list of factors for cardiovascular health. The others are a healthy diet; physical activity; low levels of nicotine exposure; and healthy levels of weight, cholesterol, blood sugar, and blood pressure.
Hearts and minds
Vascular dementia, which arises from longstanding, cumulative damage to small blood vessels in the brain, may cause or contribute to up to half of cases of dementia. The vessels may thicken or become blocked by blood clots, causing tiny strokes that damage specific parts of the brain important for various thinking abilities. Keeping blood pressure in the recommended range of 120/80 or lower is the best way to prevent vascular dementia.
The dirt on soil and water pollution
Soil and water pollution from heavy metals, pesticides, and microplastics may affect a person's risk of cardiovascular disease. These pollutants can enter the body when people eat crops grown in dirty soil, drink water contaminated by dirty soil, or inhale soil dust. Lead, cadmium, and arsenic are among the most pressing concerns. Potentially helpful actions include testing one's drinking water, buying organic foods, and minimizing plastic use.
Recent Blog Articles
Dupuytren's contracture of the hand
Why play? Early games build bonds and brain
Moving from couch to 5K
How — and why — to fit more fiber and fermented food into your meals
Tick season is expanding: Protect yourself against Lyme disease
What? Another medical form to fill out?
How do trees and green spaces enhance our health?
A muscle-building obsession in boys: What to know and do
Harvard Health Ad Watch: New drug, old song, clever tagline
Concussion in children: What to know and do
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