Vitamin D deficiency is a worldwide health problem. However, the prevalence of vitamin D
deficiency in Asian populations is unclear. The aims of our study were to investigate the …

Vitamin D deficiency, which impedes good immune function, is common during winter and
spring in regions of high latitude. There is good evidence that vitamin D deficiency …

Daylight stems solely from direct, scattered and reflected sunlight, and undergoes dynamic
changes in irradiance and spectral power composition due to latitude, time of day, time of …

Abstract Coronavirus disease 19 (COVID-19) is a pandemic caused by Severe Acute
Respiratory Syndrome Coronavirus 2 (SARS-CoV-2). It is suggested that life at high altitude …

Background Air pollution is a risk factor for poor cognitive function, while a plant-based
dietary pattern is associated with better cognitive function. We aimed to explore their …

Vitamin D synthesis by exposure of skin to solar ultraviolet radiation (UVR) provides the
majority of this hormone that is essential for bone development and maintenance but may be …

Existing studies reported higher altitudes reduce the COVID-19 infection rate in the United
States, Colombia, and Peru. However, the underlying reasons for this phenomenon remain …

Vitamin D is a fundamentally critical nutrient that the human body requires to function
properly. It plays an important role in musculoskeletal health due to its involvement in the …

Vitamin D enhances calcium absorption and bone mineralisation, promotes maintenance of
muscle function, and is crucial for musculoskeletal health. Low vitamin D status triggers …

The status of vitamin D is determined mainly by its formation in skin by the photochemical
action of solar UVB light (wavelength 290–320 nm) on the precursor 7-dehydrocholesterol …