Surrey researchers find severe vitamin D deficiency linked to higher respiratory infection hospitalisation
The study reveals the importance of vitamin D in reducing serious infections
Severe vitamin D deficiency increases the likelihood of being admitted to hospital with respiratory infections by a third, according to new research.
The study, led by the University of Surrey, found that those with vitamin D levels below 15 nmol/L were 33% more likely to need hospital treatment for infections such as bronchitis and pneumonia compared to those with adequate levels.
It also revealed that for every 10 nmol/L increase in vitamin D levels, the hospitalisation rate for respiratory infections dropped by 4%.
Vitamin D, frequently referred to as the "sunshine vitamin," helps regulate calcium and phosphate for healthy bones and muscles. Researchers also believe it has antiviral properties which could protect against serious infections.
The NHS recommends taking daily vitamin D supplements during autumn and winter to counter the lack of sunlight exposure that may lead to deficiency.
Vitamin D can also be absorbed through foods such as oily fish, egg yolks, red meat, and fortified cereals.
The study, published in the American Journal Of Clinical Nutrition, highlights the risks for middle-aged and older adults who are particularly susceptible to hospitalisation due to respiratory infections.
Abi Bournot, lead author from the University of Surrey, said: "Vitamin D is vital to our physical wellbeing.
"Not only does it keep our bones and muscles healthy, its antibacterial and antiviral properties are also thought to help reduce the risk of respiratory tract infections that can lead to hospitalisation.
"This research attaches hard data to support the theory.
"Despite its importance to our overall health, many people are deficient and do not meet the Government's recommended intake of 10 microgrammes of vitamin D per day.
"Supplementation of the vitamin, especially in the winter months when our exposure to sunlight is limited, is an effective way of increasing vitamin D and reducing the risk of serious respiratory tract infections."
Bournot emphasised that older adults and ethnic minority communities in the UK face greater risks for vitamin D deficiency, making supplementation particularly crucial for these groups.