Twice-daily vitamin D supplements may prevent dizziness

Research has found that taking a vitamin D and calcium supplement twice a day can help reduce the chance of vertigo recurring. Research shows that for individuals with benign paroxysmal positional vertigo, vitamin D and calcium supplementation is a simple, low-risk way to prevent vertigo from recurring. It is especially effective for individuals who have low vitamin D levels.

Benign paroxysmal positional vertigo is one of the most common forms of vertigo and occurs when a change in head position results in a sudden sensation of spinning. The treatment consists of the doctor performing numerous head movements that move the particles of the ear, leading to vertigo. The condition, however, tends to recur frequently, with approximately 86 percent of people with this type of vertigo reporting that it results in disruptions to their daily lives or missed days at work.

Researchers studied 957 individuals who had benign paroxysmal positional vertigo who were successfully treated with head movement therapy. The research participants were divided into 2 groups, the intervention group and the observation group.

445 individuals from the intervention group had their vitamin D levels measured at the beginning of the study. 348 people who had vitamin D levels less than 20 nanograms per milliliter received supplements containing 400 IU of vitamin D and 500 mg of calcium twice daily, while people who had vitamin D levels equal to or greater than 20 ng/mL did not receive additions. I didn’t get any extras.

512 persons of the observed group did not have their vitamin D levels checked and did not receive food supplements.

Individuals in the intervention group taking supplements experienced a lower rate of recurrence of vertigo episodes after an average of 1 year compared to individuals in the observation group. Individuals taking the supplements experienced an average relapse rate of 0.83 times per person-year, compared to 1.10 times per person-year for individuals in the observation group, or a 24 percent reduction in relapse rates per year.

At the start of the study, there appeared to be more benefit for people with more vitamin D deficiency. Individuals who started with vitamin D levels less than 10 ng/mL had a 45 percent annual reduction in relapse rates, and individuals who started with vitamin D levels from 10 to 20 ng/mL had only a 14 percent reduction in annual recurrence rate. A total of 38 percent of individuals in the intervention group experienced another episode of vertigo, compared to 47 percent of individuals in the observation group.

The study suggests that cost-effective, low-risk treatment, such as vitamin D and calcium supplements, may be helpful in preventing this common disorder, as well as a frequently recurring disorder.

The fact that not many study participants completed the entire study was a limitation of the study, as more individuals from the intervention group dropped out of the study compared to the observation group.

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