News
Insufficient vitamin D supply may increase breast cancer risk
17 January 2013
Saudi Arabian women with low blood vitamin D concentrations may have a significantly higher risk of developing breast cancer, a new study reports.
24 May 2015
A new study in vitamin E deprived rats appears to have revealed the mechanism behind the beneficial effects of vitamin E on muscle health. Vitamin E deficiency is known to cause serious muscle weakness in humans, but until now the reasons were unknown. Labazi et al. found the anti-oxidant activity of vitamin E and probably Glutathione 4 peroxidase (Gpx4) are an essential component of the membrane repair mechanism in skeletal muscle.
In previous cell culture experiments, Labazi et al. had shown oxidants inhibit the repair of muscle cells, but that vitamin E, a potent anti-oxidant, promoted membrane repair. In the current study, Labazi et al. found that specially bred rats with severe vitamin E deficiency suffered catastrophic damage to their skeletal muscle, but the effects could be reversed with vitamin E supplementation.
They also found that absence of another anti-oxidant, glutathione peroxidase 4 (Gpx4) had similar effects – and again vitamin E supplementation was necessary to restore homeostasis. The study provides a convincing explanation why vitamin E is essential to muscle health and identifies its key role as in the plasma membrane repair mechanism.
17 January 2013
Saudi Arabian women with low blood vitamin D concentrations may have a significantly higher risk of developing breast cancer, a new study reports.
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.”
13 October 2012
Men with increased intakes of the antioxidant lycopene found in tomatoes might have a lower risk of suffering a stroke, says a new study from Finland.