Topic of the Month
28 October 2019
28 May 2011
According to a new study, almost half of all Australians working indoors could come out of the winter months lacking in vitamin D.
In the study, blood vitamin D concentrations of about 100 office workers were analyzed (1). The results showed that 42 percent of the participants were deficient in the vitamin by the end of winter. In addition, one in three had low levels over summer. The lowest levels of vitamin D were measured in people with very dark skin: 90 percent were deficient by the end of winter.
Researcher Prof. R. S. Mason commented that while there are no short-term symptoms indicating a deficiency, a lack of vitamin D puts people at greater risk of osteoporosis and poor muscle function later in life. Those with very fair skin tend to be lacking vitamin D, as they avoid the sun because of its potential harm. She recommended getting out in the sun in the middle of the day in winter with as much skin exposed as possible. However, the same rays necessary for vitamin D synthesis in the skin can also cause skin damage, she warned. Mason added that according to her own research, vitamin D compounds formed in skin by the action of UV light contribute to photoprotection from within, including a reduction of DNA damage and UV-induced suppression of the immune system.
28 October 2019
13 December 2013
A new study from Taiwan reports that a supplementation with coenzyme Q10 significantly enhances antioxidant enzyme activities and lowers inflammation in patients who have coronary artery disease (CAD) and are being treated with statins.
1 August 2014
Excessive intake of high-energy macronutrients and their potential consequences for people’s health are a problem in many industrial nations. In the case of micronutrients, however, epidemiological data suggests that over-supply is the exception rather than the rule across the globe. Many people are therefore concerned that their dietary habits are failing to provide them with a sufficient supply of essential nutrients such as vitamins and carotenoids. Given that intakes of some nutrients are below officially recommended levels, it might at first sight appear unnecessary to set upper intake levels for micronutrients. However excessive intake of food supplements and fortified foods in addition to normal diets could conceivably lead to intake levels which could potentially be considered harmful. It may be sensible to define an upper daily intake level at which the risk of adverse effects on health is unlikely, particularly in the case of fat-soluble vitamins which are stored in small quantities in the body.