The healing rays of the sun from which the skin generates vitamin D cannot pass through the window glass in sufficient quantities.
Therefore, during this period of self-isolation when we spend most of our time indoors, our body does not produce enough vitamin D.
It is almost impossible to get enough of this vitamin through diet. Exposure to sunlight at safe hours (when UV radiation is not dangerous) is the only way to get enough of this vitamin.
It is necessary to drink 10 glasses of vitamin D fortified milk daily to bring the minimum amount of this vitamin into the body.
The farther you live from the equator, the longer you have to be exposed to the sun to get enough vitamin D.
Vitamin D is a fat-soluble vitamin that the human body needs to absorb calcium. It also plays an important role in maintaining muscle strength and overall resistance of the body to various diseases. Vitamin D deficiency has been linked to decreased calcium absorption, bone loss, decreased muscle strength, increased risk of fractures and frequent infections.
Vitamin D. Needs
The American Academy of Pediatrics recommends 400 IU vitamin D daily for infants up to 12 months of age. Vitamin D is found in infant formula or prescription drops (needed for all babies who are breastfed).
General recommendations for a healthy population are as follows: 600 IU vitamin D for most people aged 1 to 70 and 800 IU for people aged 71 and older. Some people need more vitamin D, for example, if they have osteoporosis or other chronic illnesses.
Populations at higher risk for vitamin D deficiency
Some of the population groups at higher risk for vitamin D deficiency than in the general population are:
Infants fed only with breast milk
Elderly people who consume low vitamin D diets and do not take supplements containing vitamin D
Individuals who fully adhere to sun exposure precautions consume low-vitamin D diets and do not take a vitamin D supplement.
Individuals tied to their home who are slightly exposed to the sun, consume low-vitamin D diets and do not take a vitamin D supplement
People with malabsorption syndromes who are unable to absorb vitamin D from food (examples are: some people with Crohn’s disease / or celiac disease)
People with liver or kidney disease who may be less able to process vitamin D