Older people who take vitamin D supplements to prevent them from getting dizzy or even fainting after standing up due to low blood pressure are wasting their time, a new study reveals.
Over-50s may be prone to a condition called orthostatic hypotension (OH), in which low blood pressure can cause them to feel dizzy or even faint or fall when standing up from a sitting position. The condition affects about 30pc of over-50s in Ireland.
However, a study from the Irish Longitudinal Study On Ageing team at Trinity College has ruled out a link between vitamin D and OH.
It was previously thought taking vitamin D supplements may help to prevent OH, based on the high percentage of people in Ireland suffering from vitamin D deficiency, including one in four people during the winter and one in eight over-50s.
Researcher Dr Eamon Laird said: "This is the largest ever study exploring vitamin D and OH. In the older Irish population we see no association.
"This is important as it is essential to know what is and is not associated with vitamin D when trying to devise and recommend intakes for the population based on health outcomes. Recently vitamin D has been seen as the cure-all health panacea; however it... cannot be associated with everything."