Letter D with several soft gel supplement pills within it. Vitamin D concept
Sean Cate
Sean Cate
April 19, 2024 ·  2 min read

Scientists Reveal New Findings About Older Adults Who Take Vitamin D

Vitamin D has long been recognized for its role in supporting bone and immune system health. Recent research has shown intriguing new insights into the additional benefits vitamin D has in older adults, particularly when it comes to cardiovascular health. Let’s look at the latest findings from clinical trials and explore the impact of vitamin D:

Cardiovascular Health Improvement

One single alone red heart love shape hand exercise ball with bandage MD medical doctor physician's stethoscope white wood background: Hospital life insurance concept: World heart health day idea
Credit: Shutterstock

The groundbreaking study was published in The British Medical Journal and presented compelling evidence regarding vitamin D supplements helping diminish serious cardiovascular events in individuals over 60. The study was conducted over a period of six years and involved a sizable group of over 21,000 Australians aged 60 to 84. The participants were randomly assigned to receive either a monthly dose of 60,000 IU or a placebo.1

Read More: Vitamin B12 Deficiency Symptoms that Most People Ignore

Better Protected

Male senior holding red heart and Happy smile. Health care, Healthy with exercise and Healthy good start, insurance, world heart day
Credit: Shutterstock

Throughout the trial, more than 1,300 of the participants experienced major cardiovascular events like heart attacks, strokes, or coronary revascularization procedures. What was notable, though, was that individuals receiving supplements demonstrated a 9% lower rate of major cardiovascular events compared to those being given placebos. Specifically, heart attacks were 19% lower amongst the vitamin D-supplemented group, and there was a reduction in coronary revascularization rates. While the true risk difference wasn’t too great, this study did show the benefits of lowering cardiovascular risk, especially in older populations. However, researchers have emphasized the need for additional evaluations, particularly in those who are continuously taking other cardiovascular medications.

Underlying Cardiovascular Effects

Health visitor and a senior woman during home visit.
Credit: Shutterstock

Vitamin D’s influence on cardiovascular health extends beyond the traditionally understood roles, too. Studies suggest that it can affect the renin-angiotensin-aldosterone system (responsible for blood volume and vascular resistance). Additionally, it exhibits anti-inflammatory properties and may lower cardiac remodeling (how the heart responds/recovers after an injury), contributing to overall heart health.2

It’s Not That Simple

Hand draw a shorten straight way to go through the complication of a maze game, easier process, simplify in communication, or fast solution concept
Credit: Shutterstock

Read More: 9 Early Warning Signs Your Body is Low in Vitamin-C

But, despite these findings, uncertainties continue regarding the causal relationship between vitamin D supplementation and cardiovascular outcomes. Some experts warn against overhyping the benefits, stating there are complexities in interpreting blood levels that may be caused by various lifestyle factors, and not just supplementation. Future research must navigate these challenges to help provide clarity on the role of the supplement in cardiovascular disease prevention.

The Bottom Line

Vitamin D and a 3D rendering of a human heart
Credit: Shutterstock

Emerging evidence suggests that vitamin D supplementation has promising results for lowering the risk of major cardiovascular events in older adults. While more investigation is required to better understand exactly how it all works and the optimal dosing regimen, the findings show just how important vitamin D is for cardiovascular health. Ultimately, a more holistic approach to dietary modifications is suggested, with regular exercise and medical management being the front runners in safeguarding heart health as we get older.

Read More: Does High Intake of Vitamins B6 and 12 Increase Hip Fracture Risk?


  1.  Scientists Reveal New Findings About Older Adults Who Take Vitamin D.” BMJ
  2. Study: Vitamin D Supplements May Help Reduce Risk of Heart Attack in Older People.” Health. Brian Mastroianni. July 21, 2023