North East United States braces with severe cold weather for at least 6 months in a year. Temperature dips below freezing for many days and it is difficult to stand outside and get the required direct sunlight.
Vitamin D deficiency is common and so are the associated diseases.
Getting sunlight via a glass window does not work, as glass cuts the UVB rays which help in generating Vitamin D.
If there is a glass alternative that can allow UVB rays to pass thru, it could be used in at least one or two sun-facing windows, however it is not yet commonly known or popular.
Vitamin D deficiency is common and so are the associated diseases.
Getting sunlight via a glass window does not work, as glass cuts the UVB rays which help in generating Vitamin D.
If there is a glass alternative that can allow UVB rays to pass thru, it could be used in at least one or two sun-facing windows, however it is not yet commonly known or popular.
