News
Salt replacements by potassium chloride could be deadly
11 March 2009
Renal specialists say that use of potassium chloride as a sodium chloride (salt) replacer could pose a hidden risk for dialysis patients.
29 June 2012
According to a new Iranian study, vitamin C and E supplements may protect against increased oxidative stress in women taking oral contraceptives.
In the randomized controlled trial that lasted four weeks, 120 healthy women were divided into three groups: those taking contraceptives only (0.03 mg ethinylestradiol and 0.15 mg levonorgestrel), those taking contra-ceptives plus vitamin C and E supplements (150mg and 200 IU respectively), and those taking a placebo (1). An analysis of blood samples showed that participants who only took contraceptives experienced increased levels of a marker of oxidative stress (malondialdehyde), while antioxidant enzyme activity (glutathione peroxidase and glutathione reductase) decreased. Taking additional supplements of vitamins C and E significantly increased enzyme activity and reduced plasma levels of the oxidative stress marker.
The researchers commented that low-dose oral contraceptives may potentially present a cardiovascular risk by enhancing oxidative stress and lipid peroxidation. The use of vitamins E and C may therefore be bene-ficial in reducing this side effect of oral contraceptives. However, larger intervention studies would be necessary to confirm these results.
11 March 2009
Renal specialists say that use of potassium chloride as a sodium chloride (salt) replacer could pose a hidden risk for dialysis patients.
13 April 2012
A new review says that supplementation with omega-3 fatty acids does not seem to reduce the risk of cardiovascular events and mortality for patients with a history of cardiovascular disease. Experts criticize that the review did not include many studies that showed a preventive effect.
27 June 2014
A new US review suggests that people with lower blood levels of vitamin D are twice as likely to die prematurely as people with higher blood vitamin D levels.