The main source of vitamin D is exposure to ultra-violet radiation in sunlight, which produces vitamin D in the skin. A small amount of vitamin D can also be obtained from the diet.
“Traditionally the lack of Vitamin D was thought to be a problem for institutionalised elderly people who did not get exposure to sunlight, but more and more we are realising that it is a problem for the whole population.”
She said that the use of sun creams and moisturisers with a sun protection factor also reduces UV absorption and so vitamin D production. “While we only need five or 10 minutes a day exposure of sun on our face and arms during the summer time to obtain the required daily amount of Vitamin D, the risk of skin cancer has meant that people are rightly cautious about sun exposure. Also our lifestyles have changed, we spend more time in front of the TV or computer; traditionally we may have spent more time outdoors”.
The three year project, which will also establish if there are differences in vitamin D levels between people living in Northern Ireland and those living in the sunnier southern climes of Cork. To date the research team at UU has recruited over 120 adults aged 20-40 years who will be provided with vitamin D supplements from October to March to calculate how much vitamin D is needed from the diet to maintain our summer time levels. Next year the study will move on to the 65-plus age group. The research is being funded by the Food Standards Agency.
Dr Wallace added: “While in the current study we are focusing on these two groups, we believe vitamin D research is also required in other groups including children, adolescents and pregnant women. Unfortunately, there are very few foods that are good sources of vitamin D, and those that are, such as oily fish, are not widely consumed so it is actually quite difficult to get vitamin D from food alone. For groups at risk of low vitamin D status it may be that supplements are needed.”
David Young | alfa
Biofilm discovery suggests new way to prevent dangerous infections
23.05.2017 | University of Texas at Austin
Another reason to exercise: Burning bone fat -- a key to better bone health
19.05.2017 | University of North Carolina Health Care
Staphylococcus aureus is a feared pathogen (MRSA, multi-resistant S. aureus) due to frequent resistances against many antibiotics, especially in hospital infections. Researchers at the Paul-Ehrlich-Institut have identified immunological processes that prevent a successful immune response directed against the pathogenic agent. The delivery of bacterial proteins with RNA adjuvant or messenger RNA (mRNA) into immune cells allows the re-direction of the immune response towards an active defense against S. aureus. This could be of significant importance for the development of an effective vaccine. PLOS Pathogens has published these research results online on 25 May 2017.
Staphylococcus aureus (S. aureus) is a bacterium that colonizes by far more than half of the skin and the mucosa of adults, usually without causing infections....
Physicists from the University of Würzburg are capable of generating identical looking single light particles at the push of a button. Two new studies now demonstrate the potential this method holds.
The quantum computer has fuelled the imagination of scientists for decades: It is based on fundamentally different phenomena than a conventional computer....
An international team of physicists has monitored the scattering behaviour of electrons in a non-conducting material in real-time. Their insights could be beneficial for radiotherapy.
We can refer to electrons in non-conducting materials as ‘sluggish’. Typically, they remain fixed in a location, deep inside an atomic composite. It is hence...
Two-dimensional magnetic structures are regarded as a promising material for new types of data storage, since the magnetic properties of individual molecular building blocks can be investigated and modified. For the first time, researchers have now produced a wafer-thin ferrimagnet, in which molecules with different magnetic centers arrange themselves on a gold surface to form a checkerboard pattern. Scientists at the Swiss Nanoscience Institute at the University of Basel and the Paul Scherrer Institute published their findings in the journal Nature Communications.
Ferrimagnets are composed of two centers which are magnetized at different strengths and point in opposing directions. Two-dimensional, quasi-flat ferrimagnets...
An Australian-Chinese research team has created the world's thinnest hologram, paving the way towards the integration of 3D holography into everyday...
24.05.2017 | Event News
23.05.2017 | Event News
22.05.2017 | Event News
26.05.2017 | Life Sciences
26.05.2017 | Life Sciences
26.05.2017 | Physics and Astronomy