Vitamin C may blunt effect of chemotherapy: study

Oct. 1, 2008

WASHINGTON (Reuters) - Vitamin C supplements may undercut the effectiveness of cancer drugs including Novartis' Gleevec, a U.S. study published on Wednesday showed.

Vitamin D a cardiovascular risk factor

KANSAS CITY, Mo., Dec. 2 (UPI) -- Vitamin D deficiency is an unrecognized, emerging cardiovascular risk factor, which should be screened for and treated, a U.S. researcher says.

Bone loss due to more than cancer drugs

CHICAGO, Nov. 21 (UPI) -- Certain cancer drugs can cause bone loss in breast cancer survivors, but cancer drugs aren't the only culprits, U.S. researchers said.

Vitamin C may help lower heart risk

BERKELEY, Calif., Nov. 14 (UPI) -- Vitamin C supplements may lower concentrations of C-reactive protein, a biomarker of inflammation, for those with elevated levels, U.S. researchers said.

Vitamins E, C did not reduce heart events

BOSTON, Nov. 10 (UPI) -- Vitamin E and C supplements did not reduce the risk of major cardiovascular events in a large, long-term study of male U.S. physicians, researchers said.

Folic acid, vitamins don't prevent cancer

BOSTON, Nov. 5 (UPI) -- A daily supplement that included folic acid and vitamin B6 and B12 had no significant effect on the overall risk of cancer, U.S. researchers said.

Vitamin D levels should be checked

KELOWNA, British Columbia, Nov. 5 (UPI) -- People should have their vitamin D levels checked annually, just as they get a flu shot every year, a Canadian non-profit group official said.

Optimal dose of vitamin E helps heart

CORVALLIS, Ore., Oct. 31 (UPI) -- Vitamin E has been found to decrease cardiovascular risk, but high doses of vitamin E also result in an increase in nose bleeds, U.S. researchers said.

Supplements don't prevent prostate cancer

SAN ANTONIO, Oct. 28 (UPI) -- Selenium and vitamin E supplements, taken either alone or together, do not prevent prostate cancer and may slightly increase risk, U.S. researchers said.

Health Canada issues vitamin warning

OTTAWA, Oct. 28 (UPI) -- Health Canada is warning Canadians, especially expectant mothers, not to use two vitamin C products sold under the brand names New Roots and Vitazan.

Study: Vitamin B doesn't slow Alzheimer's

SAN DIEGO, Oct. 16 (UPI) -- High-dose vitamin B supplements do not slow the rate of cognitive decline in patients with mild to moderate Alzheimer disease, U.S. researchers say.

Vitamin D may be linked to Parkinson's

ATLANTA, Oct. 14 (UPI) -- People with Parkinson's disease appear more likely to be vitamin D deficient than healthy adults, or patients with Alzheimer's disease, U.S. researcher said.

Pediatricians up vitamin D recommendations

BOSTON, Oct. 13 (UPI) -- Officials at the American Academy of Pediatrics Monday doubled the recommended amount of vitamin D for U.S. infants, children and adolescents.

Vitamin D lack linked to IBD, liver disease

MILWAUKEE, Oct. 7 (UPI) -- Vitamin D deficiency is common in patients with inflammatory bowel disease and chronic liver disease, U.S. researchers say.

Vitamin C may affect anti-cancer drugs

NEW YORK, Oct. 2 (UPI) -- In studies of cancer cells and mice, vitamin C appears to substantially reduce the effectiveness of anti-cancer drugs, U.S. researchers said.

It's possible to take too much vitamin D

DALLAS, Sept. 29 (UPI) -- Recent reports of medical studies about vitamin D deficiency may be causing some people to take too much of the vitamin, U.S. researchers said.