Vitamin D supplements taken on a monthly basis may be able to reduce the risk of heart attacks in older adults, according to a study conducted in Australia. The five-year study involved 21,315 participants aged between 60 and 84 who were randomly assigned to either a group that received a monthly high-dose vitamin D tablet or a placebo. The aim of the study was to compare the occurrence of deaths or hospital admissions related to heart problems, including heart attacks and strokes.
The results of the study showed that the group receiving vitamin D had a 19% lower rate of heart attacks compared to the placebo group. However, there was no significant difference in the occurrence of strokes between the two groups. The researchers concluded that routine vitamin D supplementation among individuals over the age of 60 could potentially reduce the risk of heart attacks.
While the researchers acknowledged that the effect of vitamin D on heart health may be modest, they estimated that 172 people would need to take monthly vitamin D supplements in order to prevent one significant heart problem. Interestingly, the protective effect of vitamin D appeared to be slightly stronger in individuals who were already taking statins, which are medications used to prevent heart attacks. The researchers hypothesized that vitamin D may help reduce inflammation in blood vessels, thus contributing to heart protection.
In addition to its potential role in preventing heart attacks, vitamin D is known to support immune responses and maintain healthy bones. Previous studies have also suggested a potential link between vitamin D and dementia prevention, as well as aiding the clearance of amyloid in the brain.
For individuals at high risk of vitamin D deficiency, daily supplements are recommended. The National Health Service (NHS) suggests a daily dose of 10 micrograms for optimal health.
Overall, the study highlights the potential benefits of vitamin D supplementation in reducing the incidence of major cardiovascular events, particularly among individuals already taking statins or other cardiovascular drugs. However, it is important to note that the study does not prove a cause-and-effect relationship between vitamin D and heart health.
As always, it is advisable to consult with a healthcare professional before starting any new supplement regimen. While vitamin D supplements are generally considered safe, it is important to determine the appropriate dosage for individual needs and to consider any potential interactions with other medications.
