It seems powerless against some cancers, including colon cancer.

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They cite a flurry of intriguing, if preliminary, epidemiological and lab studies hinting that vitamin D may play a role in staving off a wide range of diseases, including colon cancer, infections, multiple sclerosis and other autoimmune ailments and possibly even heart disease.

FORBES: D Is for Debate

It has rejected some expensive cancer drugs, including Avastin for colon cancer and Tykerb from GlaxoSmitkline for breast cancer.

FORBES: Drawing The Line On Overpriced Cancer Drugs

Besides BRACAnalysis , Myriad offers eight tests, including ones for prostate, colon and skin cancer.

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But one patient had colon cancer and a number of other complex issues, including heart disease.

NEWYORKER: The Cost Conundrum

They found that, with a mean follow-up of 6.5 years, allocation to aspirin reduced risk of cancer with distant metastasis by 36%, risk of adencarcioma (common solid cancers including colon, lung, and prostate cancers) by 46%, and of other solid cancers (eg bladder, kidney) by 18%.

FORBES: Meta-Analysis Adds New Evidence For Cancer Benefits Of Daily Aspirin