Tag: vitamin d

Link between vitamin D deficiency and Alzheimer’s disease

Posted on by Jesrael
vitamin-D-deficiency-Alzheimer
Beyond the classical roles of vitamin D in Calcium Homeostasis and regulation of Musculoskeletal Health (maintain normal blood levels of calcium and phosphorus), there is emerging facts that shows a range of effects of vitamin D in the central nervous system. There are cross sectional studies which serve as the evidence for considering vitamin D as a ‘neurosteroid hormone’ and as a potential biomarker of Alzheimer’s disease (AD) (1, 4). Experimental and pre-clinical data suggest a link between vitamin D status and cognitive function. Vitamin D receptors have been found in several types of human brain cells; where they receive chemical signals. There are only fewer vitamin D receptors in the hippocampus (involved in forming memori...

Vitamin D Rich Food

Posted on by Jesrael
vitamin-d-rich-food
The exposure of the skin to solar ultraviolet B (UVB; 290–315 nm) radiation is considered as the most important sources of vitamin D. Vitamin D is rare in food. Among the vitamin D-rich food, oily fish are considered to be one of the best sources. The other factors that affect the cutaneous vitamin D synthesis are seasons, time of day, the length of the day, cloud cover, smog, skin melanin content, and sunscreen (1). UVB radiation does not penetrate glass, so exposure to sunlight indoors through a window does not produce vitamin D. Complete cloud cover reduces UV energy by 50%; shade (including that produced by severe pollution) reduces it by 60%. Individuals with restricted sun exposure need to include good sources of vitamin D in...