A doctor who often features on ITV has issued a warning for those taking vitamin D and other dietary supplements. Dr Zoe Williams made an appearance on This Morning last week, where she revealed how people might be inadvertently putting their health at risk.

Speaking with presenters Cat Deeley and Ben Shephard in the studio, she warned: "There's certain vitamins that we don't pee out if we take too much, they're stored in the fat, so vitamins A, D, E, and K. These can build up in your system.

"So when it comes to vitamin D, we should all be taking vitamin D in the winter months, but 10 micrograms is what the NHS recommends. Some people may choose to take higher levels than that but if you're taking 10 times that or more it can become toxic."

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The GP went on to explain that the supplement, at excessive doses, causes the body to retain calcium, which can result in calcium accumulation in your bloodstream, kidneys, and heart. She continued: "That can make you feel unwell. So [yes] you can take too much.

"So I often say there are 3 categories. People who need supplements, people who benefit from taking it as insurance and people who are taking it to harmful levels. So just be careful."

Vitamin D plays a crucial role in controlling the levels of calcium and phosphate within the body. These essential nutrients are vital for maintaining healthy bones, teeth and muscles.

Not getting enough vitamin D can result in skeletal abnormalities such as rickets in youngsters, and bone discomfort stemming from a condition known as osteomalacia in grown-ups. Government guidance recommends that everyone should think about taking a daily vitamin D supplement throughout the autumn and winter months.

Those at high risk of vitamin D deficiency, all children aged 1 to 4, and all babies (unless they're consuming more than 500ml of infant formula daily) should take a daily supplement all year round.