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Numerous studies are shedding light on the potential cognitive benefits of vitamin D, often referred to as the "sunshine vitamin," beyond its established roles in bone health and immunity.

One study published in The American Journal of Clinical Nutrition sheds light on the association between low vitamin D levels and reduced brain volumes, while a University of South Australia-led study suggests that correcting vitamin D deficiency could potentially prevent a significant portion of dementia cases.

"This vitamin has been shown to be neuroprotective and is involved in regulating genes which are important for brain function," nutritionist Rob Hobson said, according to Britain's News Channel.

Research findings reveal that people with low vitamin D levels tend to perform less favorably in memory tests while increasing intake of the sunshine vitamin has been linked to improved memory function.

Notably, a study published in Alzheimer's & Dementia: The Journal of the Alzheimer's Association has marked the first examination of vitamin D levels in brain tissue, revealing a link between higher vitamin D levels and better cognitive function, including enhanced memory and slower cognitive decline.

Weighing on these findings, nutritionist Rob Hobson pointed out the neuroprotective properties of vitamin D and its role in regulating genes crucial for brain function.

Vitamin D's anti-inflammatory effects are also highlighted, with research indicating its potential to reduce inflammation associated with chronic diseases, including cognitive decline.

While sunlight is the primary source of vitamin D, supplementation is often necessary, particularly in regions with limited sunlight exposure, according to the study authors.

Public Health England recommends daily supplementation, especially during months with reduced sunlight, with specific emphasis on vitamin D3 (cholecalciferol) for its superior effectiveness in maintaining blood vitamin D levels. At the same time, supplements may help bring about the newfound benefits of the vitamin for brain health and memory.