NewsVoice är en oberoende nättidning med utgivningsbevis som startade 2011. Syftet är att publicera nyheter, debattartiklar, kommentarer och analyser. 
SCIENCENORWAY. “The risk of dying from cancer is more than 2.5 times higher in patients with low vitamin D levels compared to patients who have high levels of the same vitamin.”
“The correlation was consistent in patients with breast, colon, lung and lymphoma cancer, and the findings support the assumption that vitamin D is an important factor in the development of cancer.
Steinar Tretli at The Cancer Registry of Norway and colleagues measured the vitamin D levels of 658 patients with cancers of breast, colon, lung and lymphoma, by using blood samples that had been collected at the time of diagnosis.
The patients were allocated to four groups, based on their vitamin D levels, ranging from high, medium-high, medium-low and low. When the researchers compared them, they found that the risk of dying from cancer was the highest for patients in the low-level group.”
“Our key finding was that those with the lowest vitamin D levels were about 2.5 times more likely to die of the disease, compared with patients with the highest levels,” says Trude Eid Robsahm, who co-authored the study.