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Dementia risk linked to type of physical activity and vitamin D levels
New research highlights a “physical activity paradox” regarding dementia risk. An international meta-analysis published in The Lancet Public Health, involving over 4.2 million participants, found that leisure-time activities such as walking, swimming, or cycling are associated with up to a 24% reduction in dementia risk. Conversely, high levels of physical exertion required by work, such as heavy lifting or prolonged standing, are correlated with a 20% increase in dementia risk. Researchers suggest the difference lies in psychological factors, noting that voluntary exercise allows for better stress management and recovery, whereas occupational physical labor may increase systemic inflammation and psychosocial stress.
In a separate study conducted by Emory University, researchers found that high doses of vitamin D (at least 5000 IU daily) may help slow cognitive decline. Participants taking these doses scored 13% higher on the Montreal Cognitive Assessment (MoCA) compared to those who did not. The study suggests that vitamin D supplementation may be particularly beneficial during the stage of mild cognitive impairment.
Entities
Alzheimer's disease · Emory University · The Lancet Public Health
Claims
What the coverage asserts, and how many sources carry each claim.
- [● 2 SOURCES] High levels of voluntary leisure activity are associated with a 24 percent lower risk of dementia.
- [● 2 SOURCES] Voluntary leisure-time physical activity is linked to a lower risk of dementia.
- [● 2 SOURCES] High levels of physical activity at work are associated with a 20 percent higher risk of dementia.
- [● 2 SOURCES] Participants in the study were aged between 45 and 93 years.
- [● 2 SOURCES] The study evaluated 74 studies involving more than 4.2 million people.
- [○ 1 SOURCE] A meta-analysis of 74 epidemiological studies involving over 4.2 million participants found that the impact of physical activity on brain health depends on the socio-environmental and personal context triplenlace.com
- [○ 1 SOURCE] Participants taking 5000 IU of vitamin D daily scored 13% higher on the Montreal Cognitive Assessment (MoCA) than those who did not actualidad.rt.com
- [○ 1 SOURCE] The specific form of vitamin D, whether D2 or D3, did not influence the cognitive outcomes in the study actualidad.rt.com
- [○ 1 SOURCE] Leisure-time physical activity, such as walking, running, or swimming, is associated with up to a 24% reduction in dementia risk triplenlace.com
- [○ 1 SOURCE] High doses of vitamin D (at least 5000 IU daily) may improve cognitive function in individuals with mild cognitive impairment actualidad.rt.com
- [○ 1 SOURCE] High levels of physical demand at work, such as heavy lifting or prolonged standing, correlate with a 20% increase in dementia risk triplenlace.com