Vitamin D is created in the from direct sunlight on the skin when outdoors, and most people should be able to get enough of the sunshine vitamin from about late March/early April to the end of September. Certain groups are at risk of developing a vitamin D deficiency, and, if left untreated, lacking the nutrient can cause a host of health issues. As the NHS explains, a lack of vitamin D can lead to bone deformities such as rickets in children, and bone pain caused by a condition called osteomalacia in adults.
In addition to bone deformities, a vitamin D deficiency may also impair a person’s balance, suggests a study published in European Archives of Oto-Rhino-Laryngology.
The research links low levels of vitamin D to a common type of vertigo called benign paroxysmal positional vertigo (BPPV), which creates the sudden sensation that you’re spinning or that the inside of your head is spinning, explains Mayo Clinic.
The signs and symptoms of benign paroxysmal positional vertigo (BPPV) may include:
- A sense that you or your surroundings are spinning or moving (vertigo)
- A loss of balance or unsteadiness
The signs and symptoms of BPPV can come and go, with symptoms commonly lasting less than one minute, and episodes of benign paroxysmal positional vertigo can disappear for some time and then recur, notes Mayo Clinic.
To investigate the association between vitamin D levels, bone mineral density, and BPPV, researchers enrolled 80 patients with BPPV for the study group.
The study group was divided into two subgroups: participants with recurrent BPPV and participants with non-recurrent BPPV, and the control group consisted of 100 healthy participants.
The vitamin D levels and bone mineral densities were then compared between the control group and the study group.
Who is at risk of a vitamin D deficiency?
Some people won’t get enough vitamin D from sunlight because they have very little or no sunshine exposure.
The Department of Health recommends that you take a daily supplement containing 10 micrograms of vitamin D throughout the year if you:
- Aren’t often outdoors – for example, if you’re frail or housebound
- Are in an institution like a care home
- Usually wear clothes that cover up most of your skin when outdoors
If you have dark skin – for example you have an African, African-Caribbean or south Asian background – you may also not get enough vitamin D from sunlight.
You should consider taking a daily supplement containing 10 micrograms of vitamin D throughout the year, advises the health body.
The NHS advises against exceeding the recommended dosage, however: “Taking too many vitamin D supplements over a long period of time can cause too much calcium to build up in the body, which can weaken the bones and damage the kidneys and the heart.”
If you choose to take vitamin D supplements, 10 micrograms a day will be enough for most people, and taking more than 100 micrograms of vitamin D a day could pose health risks, says the health body.
You can buy vitamin D supplements or vitamin drops containing vitamin D (for under 5s) at most pharmacies and supermarkets, says the NHS.
Vitamin D is also found in a small number of foods.
- Oily fish – such as salmon, sardines, herring and mackerel
- Red meat
- Egg yolks
- Fortified foods – such as most fat spreads and some breakfast cereals