A crucial fat-soluble vitamin for supporting the immune system and bone health is vitamin D. Australian researchers monitored a group of elderly individuals. This is to determine whether vitamin D supplements could lower the incidence of serious heart disease events.

For five years, the test group received a monthly vitamin D supplement from the researchers.

The participants who took vitamin D supplements did have a slight risk decrease for several major cardiovascular events, even though it was not as significant as the researchers had hoped.

According to a study that was recently published in the BMJ, an Australian research team conducted a clinical trial. This was to see if vitamin D may help prevent major heart disease events like heart attacks and strokes.

The older persons were tracked by the researchers between the ages of 60 and 84. Heart disease is thought to be more likely to strike people in this age bracket.

When comparing the control and test groups, the researchers found that vitamin D had no effect on strokes. However, they did discover that the rate of major cardiovascular events was 9% lower in the vitamin D supplement group.

What is Vitamin D?

In addition to supporting the immune system and other processes, vitamin D is crucial for strong bones. The human body responds to sun exposure by producing vitamin D. A person can increase their vitamin D intake by eating particular foods or taking supplements.

For strong bones and teeth, vitamin D is necessary. In addition, it performs a variety of other crucial functions in the body, including controlling immunological response and inflammation.

Despite its name, vitamin D is actually a hormone or prohormone rather than a vitamin.

Detailed research on vitamin D

The leading cause of death in the United States is cardiovascular disease (CVD). Although CVD can affect adults of any age, those 65 and beyond have the highest illness rates.

CVD can be dangerous and may be and the potential strain it may have on the healthcare system. Researchers have been exploring strategies to both treat and prevent the illness.

The authors of the study noted that earlier studies had limitations and did not demonstrate a link between vitamin D and lowering the risk of CVD. Because of the author’s observation, vitamin D has biological effects which suggest it could influence cardiovascular disease. Therefore, they conducted a more thorough investigation.

21,315 participants in the study ranged in age from 60 to 84. Participants who were already taking vitamin D supplements or had a history of diseases like sarcoidosis and hypercalcemia were excluded from the study.

A 60,000 IU vitamin D-3 pill was given to the test group once a month for five years. The control group consumed a sugar pill.

In order to understand the individuals’ socioeconomic level, way of life, and eating habits, the researchers gathered baseline data. They collected surveys, tested blood samples, and kept an eye out for adverse events throughout the trial. This is to ensure sure the participants were taking their supplements as prescribed.

The individuals also allowed researchers access to their medical records. So that they could gather data on mortality, prescribed drugs, and cardiovascular events.

Does vitamin D aid the heart?

A few previous observational studies have hinted at a potential link between reduced incidence of CVD and higher blood levels of vitamin D.

This new study suggests that vitamin D supplementation may have some advantages, even if clinical studies have not yet conclusively shown that it improves heart health.

When compared to the placebo group, the number of heart attack events among people taking vitamin D was 19% lower. Additionally, the vitamin D group had decreased rates of coronary revascularization, which might involve treatments like a heart bypass or a coronary artery bypass graft.

Although the rate of major cardiovascular events was 9% lower overall in the groups receiving vitamin D, the study’s results did not indicate a lower rate among minor cardiovascular events.

The scientists cautioned about the 9% decline, saying it’s likely that users of statins or other cardiovascular medications may have contributed to it.

“For total major cardiovascular events, there was some indication of a stronger effect in those who were using statins or other cardiovascular drugs at baseline,” the authors wrote.

Because of this, the authors state that additional research is necessary before they can state with certainty that vitamin D alone prevents CVD.

The authors conclude that their research “indicates that supplementation with vitamin D may reduce the incidence of major cardiovascular events, particularly myocardial infarction, and coronary revascularization.”

“Those who were taking statins or other cardiovascular medications at the outset may have noticed this beneficial impact more clearly. The authors write, “Subgroup studies in other major trials might assist to explain this issue.

Does vitamin D suffice to lower the risk of CVD?

We had a discussion about the study with Dr. Yu-Ming Ni, a cardiologist from MemorialCare Heart and Vascular Institute at Orange Coast Medical Centre in Fountain Valley, California. Dr. Ni did not believe that the study’s findings were yet significant enough to demonstrate that vitamin D supplementation can lower rates of CVD.

“After reading this study, it is tempting to draw the conclusion that there may be a trend towards a benefit for vitamin D supplementation for the prevention of cardiovascular disease, especially as it relates to the prevention of heart attacks myocardial infarction,” he stated.

According to Dr. Ni, the new study “did not demonstrate a significant benefit of Vitamin D supplementation, even if there was a small benefit” when compared to previous studies on vitamin D and CVD.

Dr. Ni stated that vitamin D is still an essential supplement for bone health even though she did not believe the study offered hope for using it to lower the incidence of CVD.

When we discussed the report with Dr. Dmitriy Nevelev, associate director of cardiology at Staten Island University Hospital in New York, he had a somewhat different perspective on it.

Dr. Nevelev added that although earlier sizable studies on vitamin D and CVD had not revealed a “significant effect,” “many of these studies had limitations such as suboptimal adherence with daily therapy, an insufficient dose of vitamin D, or an overall lower risk population.”

REFERENCES:

• https://www.medicalnewstoday.com/articles/161618
• https://www.medicalnewstoday.com/articles/could-monthly-vitamin-d-supplements-help-prevent-heart-attacks
• https://scitechdaily.com/vitamin-d-supplements-may-reduce-risk-of-heart-attacks-and-major-cardiovascular-events/?expand_article=1
• https://www.theguardian.com/science/2023/jun/28/vitamin-d-supplements-may-cut-risk-of-heart-attacks-trial-suggests

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