News
Zinc may reduce prostate cancer mortality
15 March 2011
High dietary intakes of zinc after diagnosis may be associated with lower prostate cancer-specific mortality for men, says a new Swedish study.
29 June 2010
Supplementation with vitamin C and E fails to reduce the risk of pre-eclampsia in women with type-1 diabetes, according to a new Irish study.
In the randomized controlled trial, 762 pregnant women with type-1 diabetes were allocated to receive either a placebo or a daily antioxidant supplement containing 1,000 mg of vitamin C and 400 IU of vitamin E from between 8 and 22 weeks' gestation until delivery (1). The results showed that both groups had similar rates of pre-eclampsia. However, women in the supplement group who had low antioxidant status at the start of the study benefited from a significantly lower risk of pre-eclampsia. The findings also support the tolerability and safety of vitamin C and E supplements, with no harm to mothers or babies reported.
According to the researchers, women with type-1 diabetes are at high risk of pre-eclampsia and preterm delivery, linked to the increased levels of oxidative stress in these individuals, which theoretically could be compensated by antioxidants. The benefit of vitamin supplementation might be limited to women with vitamin depletion.
Experts commented that these conclusions might not be valid. The cause of pre-eclampsia might be multi-factorial. Some cases might be caused by immunological factors, others by dietary factors, and others because of pre-existing medical conditions, or by a combination of these factors. Therefore any single intervention is unlikely to be effective in preventing pre-eclampsia.
15 March 2011
High dietary intakes of zinc after diagnosis may be associated with lower prostate cancer-specific mortality for men, says a new Swedish study.
1 November 2009
“The headline ‘The dark side of vitamin C’ recently appeared in the German newspaper service ‘Die Welt online,’ prompted by an American study showing that artificial antioxidants (N-acetyl cysteine and Trolox) support the metabolism of tumor cells that have become detached from the tumor and could thus promote metastasis.”
7 October 2013
A new review from Brazil concludes that orange juice has many positive effects that may aid cancer prevention, particularly because of its antioxidants. On the other hand, excessive consumption of orange juice may have harmful effects.