New Research Finds Vitamin D May Help Lower Blood Pressure in Older Adults
At Montana Global Health, we believe in the power of quality supplements to support better health. New findings from the Journal of the Endocrine Society are shedding light on the potential of vitamin D to support heart health, especially for older adults with. The study, published on November 12, 2024, revealed that vitamin D supplements, combined with calcium, were associated with reduced blood pressure in older adults who struggle with high blood pressure. Here’s a breakdown of the study’s findings and what they mean for anyone considering vitamin D as part of a wellness plan.
Vitamin D and Blood Pressure: What the Study Found
The study involved 221 participants aged 65 and older who were taking daily vitamin D supplements. Each participant was classified as having obesity (BMI over 30) and had a blood pressure reading considered high, with systolic levels over 130 or diastolic levels over 80. In addition, all participants had low vitamin D levels before the study, between 10 and 30 ng/mL.
Over a one-year period, the researchers examined two groups: one taking 600 IU of vitamin D per day, the recommended daily dose according to the Institute of Medicine, and another taking a higher dose of 3,750 IU. Both groups also took 250 mg of calcium citrate. Results showed that while the higher dose did not outperform the lower dose, both groups experienced significant reductions in blood pressure. On average, systolic pressure (the top number) decreased by 3.5 mm Hg, and diastolic pressure (the bottom number) by 2.8 mm Hg. Those with lower initial levels of vitamin D experienced the greatest improvements, showing that deficiency correction may play a key role.
Why Vitamin D Could Help Regulate Blood Pressure
Experts believe vitamin D influences blood pressure through several key mechanisms:
- Calcium Regulation: Vitamin D helps regulate calcium in the body, which is essential for blood vessel function. “Calcium is crucial for blood vessel contraction and relaxation,” says Dr. Reimas Geiga, a registered dietitian and clinical nutritionist. By supporting vascular function, vitamin D may naturally assist in lowering blood pressure.
- Reduced Inflammation: For individuals with obesity, chronic inflammation can impact blood vessel health, contributing to high blood pressure. Vitamin D’s anti-inflammatory properties may counteract this, supporting healthier blood vessel function.
- Impact on the Renin-Angiotensin-Aldosterone System: This system regulates blood pressure, and research shows that adequate vitamin D may reduce its activity, further assisting in blood pressure control.
Are Vitamin D Supplements Right for You?
Vitamin D is often called the “sunshine vitamin” because our bodies produce it when exposed to sunlight. However, not everyone receives enough natural sunlight to maintain optimal levels. “The first step is a simple blood test to check for vitamin D deficiency,” explains Dr. Rita Hawle, a clinical dietitian. She suggests this test for anyone with high blood pressure or obesity, as deficiency may be contributing to their condition.
If levels are low, a combination of dietary vitamin D, safe sun exposure, or supplements can help. Dr. Hawle cautions that vitamin D should not be taken in isolation. “Supplements are best viewed as part of a comprehensive strategy, including regular exercise, a balanced diet, and weight management for lasting heart health,” she says.
Resources:
https://www.healthline.com/health-news/vitamin-d-supplements-lower-blood-pressure