The Summary
In a double-blind, randomized controlled trial, researchers evaluated whether weekly vitamin D supplementation prevents recurrent benign paroxysmal positional vertigo (BPPV). The study followed 160 adults with BPPV and vitamin D deficiency (<20 ng/mL) for 24 months. Participants received either 10,000 IU of cholecalciferol weekly or a placebo. The vitamin D group experienced a dramatic 50% relative risk reduction in vertigo recurrence compared to the placebo group (27.5% versus 55% recurrence at 24 months), with zero adverse hypercalcemic events reported.
Why this is interesting
Vertigo, specifically BPPV, is notoriously unpredictable and frustrating to manage, with few preventative options available. This study provides high-quality clinical evidence that a simple, inexpensive vitamin D regimen can significantly slash recurrence rates for those with low levels. It suggests that calcium-regulating mechanisms in the inner ear are highly sensitive to vitamin D. For readers prone to dizzy spells, getting a routine vitamin D blood test and correcting a deficiency could offer a powerful, accessible way to regain control and keep vertigo at bay.