Experts sound alarm following the death of an 89-year-old UK man from a vitamin D overdose

An 89-year-old man in the UK died from an overdose of vitamin D, lacking warnings about excessive intake.

David Mitchener, a retired businessman, suffered from hypercalcemia due to high vitamin D levels, leading to his death ten days after hospitalization last May.

Medical officials highlight the dangers of taking too much of the supplement, while Surrey assistant coroner Jonathan Stevens urges for mandatory warnings on packaging about the risks of overdose. Despite food label regulations, current standards don't require such warnings.

Mitchener's vitamin D levels reached a record high of 380 at the lab, well above the recommended adult level of 30 for sufficiency. The normal dosage is 600 IUs for most adults, and exceeding this can be harmful, warns the Mayo Clinic.

While Mitchener was also suffering from congestive heart failure, chronic kidney failure, and ischemic heart disease, the coroner emphasized the serious risks of excessive vitamin supplement consumption.