11 February 2013
According to a new Swedish study, men who regularly take vitamin C supplements but not multivitamins may be at a higher risk of developing kidney stones.
The observational study documented cases of kidney stones among 23,355 men with no history of kidney stones who consumed either no dietary supplements or supplementswith vitamin C (ascorbic acid) over the course of 11 years (1). The risk of kidney stones in vitamin C-takers was compared with the risk among men who did not take any supplements and in men who took only multivitamins. The study results indicated that men who took vitamin C supplements – more than 7 tablets containing the typical dose of around 1000 mg per week – were twice as likely to develop kidney stones as men who did not take any dietary supplements or men who regularly used multivitamins.
The researchers suggested that both the dose of vitamin C and the combination of nutrients with which it is ingested could play an important role in the risk of kidney stones. However, the findings could not prove that the vitamin itself triggered the stones to form. The results would need to be confirmed by further studies. While the relationship between regularly high doses of vitamin C and kidney stones is not clear, some ex-perts suggest the recommended vitamin C intake should be raised to 200 mg/day for adults.
7 February 2014
According to a new study from Turkey women with low levels of vitamin D seem to have thinner femoral cartilage, increasing their risk of developing osteoarthritis of the knee.
7 June 2011
In highly developed countries the risk of inadequate micronutrient consumption during pregnancy remains very high, criticize health professionals.
17 December 2012
Increased intakes of beta-carotene, vitamin C and vitamin E may improve symptoms of depression and anxiety for patients with insufficient blood antioxidant levels, suggests a new study from India.
