Tag Archives: nutritional supplements

Multivitamins Don't Raise Colon Cancer Survival, Prevent Recurrence

Taking a daily multivitamin didn’t improve survival or reduce the risk that colon cancer would come back for stage III patients enrolled in a clinical trial of chemotherapy after surgery. Although about half of patients in the trial took a multivitamin supplement during their treatment, the vitamin didn’t improve their outcomes, nor did it reduce side effects.  At the same time, multivitamin use didn’t have a detrimental effect.

Drugs Ads Prompt Requests to Doctors for About One in Ten Patients

Media ads for prescription drugs prompted 7.5 percent of people in a recent survey to ask their doctor about a prescription. But the doctors only agreed about a third of the time. They were more likely to go ahead and write a prescription when the person asking was over 65.  Almost half of seniors (46.4 percent) were given a prescription for a medicine that they saw advertised and asked their doctor about. In the same survey, 6 out of 10 people said that ads for nutritional supplements weren’t trustworthy, but 12 percent bought the supplements based on the ads anyway.

Vitamin C Reduces Chemo Effectiveness in Cancer Cells and Mice

Oncologists often recommend that patients on chemotherapy avoid antioxidant supplements including vitamin C.  Now basic research shows that vitamin C reduces the activity of several different chemotherapy drugs, both in cancer cell lines and in experimental mice. Vitamin C appears to protect the cell against death during chemotherapy by restoring its mitochondria.  Mitochondria power cells, converting nutrients to energy.  When mitochondria are damaged they force the cell to die — the goal of chemotherapy.  By revitalizing damaged mitochondria, the vitamin reduced the effectiveness of all the chemo drugs tested, by as much as 70 percent for some.