Vitamin D deficiency
|I've probably had vitamin D deficiency all my life.|
I avoided the sun for years, because as a child I was afraid of sunburn, later I was afraid of skin cancer.
A connection with my years of knee pain when hiking and cycling, I consider possible.
Also, I know many phases of listlessness and depression from my life.
Fragile fingernails have been around for ages.
Also, I have experienced phases in which I constantly had colds.
My blood circulation was weak for years.
In 2014 my vitamin D level was measured for the first time:
Vitamin D deficiency obviously promotes autoimmune reactions. Autoimmune diseases are the rarest in the world around the equator, most often in countries far from the equator. This means that a connection with the sunlight is likely. In turn, sunlight is crucial for vitamin D formation through the skin.
It has also been known for many years that vitamin D deficiency in children is associated with the risk of developing type 1 diabetes.
For example, in this study.Conversely, it was found that the number of children with type 1 diabetes decreased in Finland after the nationwide (re)introduction of vitamin D substitution.