What Dose of Oral Vitamin D Do You Need to Prevent Cancer?

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Researchers have reported that a much higher intake of vitamin D is needed to

reach blood levels that can prevent breast cancer and other major diseases than

had been originally thought.

They found that daily intakes of vitamin D by adults in the range of 4000-8000

IU are needed to maintain blood levels of vitamin D metabolites in the range

needed to reduce by about half the risk of breast cancer, colon cancer, multiple

sclerosis, and type 1 diabetes. While an Institute of Medicine committee has

stated that 4000 IU/day is a safe dosage, their recommended minimum daily intake

is only 600 IU/day.

According to the study in the journal Anticancer Research:

" The supplemental dose ensuring that 97.5 percent of this population achieved a

serum 25(OH)D of at least 40 ng/ml was 9,600 IU/d ... Universal intake of up to

40,000 IU vitamin D per day is unlikely to result in vitamin D toxicity. "

http://www.iiar-anticancer.org/openAR/journals/index.php/anticancer/article/view\

/215