Dr Michael Mosley urges vitamin D supplements to help prevent dementia

4 articles · Updated · Express · Apr 26

Mosley highlighted that in the UK, winter sunlight is insufficient for adequate vitamin D, putting over half of older adults and South Asians at risk of deficiency.
He cited studies showing vitamin D deficiency raises dementia risk by over 50%, and severe deficiency more than doubles it. Mosley called vitamin D an exception among supplements due to mounting evidence.
The NHS recommends a daily 10 microgram supplement during autumn and winter, warning not to exceed 100 micrograms. Vitamin D’s benefits extend beyond bone health, potentially supporting immunity and brain function.

A 2026 study links midlife vitamin D to a healthier brain. Is it too late to start supplementing for dementia prevention?

Is vitamin D a powerful dementia shield, or does the evidence overstate its true impact on brain health?

Taking vitamin D alone could be a mistake. Are you missing the two key nutrients required for it to work?

With one billion people deficient, why has vitamin D become a global public health crisis?

New research links specific genes and vitamin D to breast cancer risk. Could a supplement help protect you?

Insurance often won't cover testing. Are you taking the right amount of vitamin D, or is it just a guess?