Dr Oscar Duke appeared on BBC Morning Live on Wednesday to warn viewers about the dangers of taking too much vitamin D
Turns out there is such thing as too much of something good(Image: samael334 via Getty Images)
A doctor has issued a warning about Vitamin D overdose, urging Britons to adhere to the recommended dosage. Dr Oscar Duke featured on BBC Morning Live on Wednesday to outline the health dangers of excessive intake.
According to the NHS, Vitamin D helps regulate calcium and phosphate in the body, which are crucial for maintaining healthy bones, teeth and muscles. The health body also states it performs an important function in bolstering the immune system.
However, due to Britain’s climate, many individuals struggle to obtain sufficient vitamin D naturally through sunlight exposure. Supplements are consequently advised to bridge this gap.
“In these winter and autumn months, it’s really important to supplement our vitamin D because we don’t get enough from sunlight in the UK,” Dr Oscar explained. Nevertheless, excessive consumption can result in serious health complications.
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He added: “The NHS and government recommendation is that we take 400 international units of vitamin D a day during those autumn and winter months.”
Adults and children aged over one are recommended to take a daily 10 microgram supplement – equivalent to 400 IU – from October through to early March.
Passing the advised dose is fairly straightforward, as over-the-counter supplements frequently contain 800 to 1,000 IU. Dr Oscar cautioned: “If you’re getting over 4,000 international units, then you’re at potential risk of vitamin D overdose.”
The NHS cautions that excessive vitamin D consumption over extended periods can lead to a build-up of calcium in the body, a condition called hypercalcaemia.
“If you get too much calcium in your body, then that can affect your heart,” said Dr Duke. “You can get calcium stones in your kidneys, and it can really upset your tummy.”
Whilst toxicity is regarded as uncommon, the Food Standards Agency recommends that 4,000 IU (100 micrograms) daily represents the safe upper threshold for adults. Vitamin D deficiency continues to be widespread across the UK, with government figures from the National Diet and Nutrition Survey indicating that approximately one in six adults experience low levels throughout winter.
Dr Oscar Duke emphasised that adhering to the recommended dosage is essential for safely reaping the benefits of vitamin D. Surpassing the safe threshold can result in severe health complications. Always examine supplement labels and seek medical advice if uncertain about your intake.
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