The rising number of people with obesity is "reducing the effective levels" of Vitamin D the body can use, an expert has warned.
Dr Adrian Martineau, Vitamin D expert and clinical reader in respiratory infection and immunity at Queen Mary University of London, said:
Vitamin D is also a fat-soluble hormone and as such, gets stored in the body's fat reserves - where it is unable to carry out its normal role.
With rising levels of obesity, more of us have greater amounts of body fat and this is reducing the effective levels of vitamin D.
This further highlights the importance of supplementation in this nutrient as a public health issue.
More top news
The star - who played Miranda Hobbes in the hit New York-set show - posted a message on Twitter announcing her run.
Another cold night to come before temperatures slowly start to recover throughout the coming week.
The opioid epidemic is so extreme in the US city of Manchester, that the drugs are killing almost 100 of the 100,000 residents each year.