Scientists have statistically proven that vitamin D increases the chance of surviving the disease. One in seven Germans has a pronounced vitamin D deficiency.
In cancer patients, vitamin D blood levels are particularly often below the threshold value. Study: Daily intake in low doses between 400 and 4000 international units was decisive for the better chances of survival.. Sunlight is the most important source of vitamin D. The human body covers up to 90 percent of its needs with sunlight being the main source of the vitamin D in the body.