A recent study published in the Journal of the Endocrine Society suggests that taking a daily vitamin D supplement, in addition to calcium, may help lower blood pressure in older adults with obesity. The study included 221 individuals aged 65 and older who were classified as overweight and had low levels of vitamin D.
The study participants were divided into two groups, one receiving a daily dose of 600 IU of vitamin D and the other receiving 3,750 IU. Both groups also took 250 mg of calcium citrate. After one year of supplementation, both groups experienced a statistically significant decrease in blood pressure, with systolic blood pressure dropping by 3.5 mm Hg and diastolic blood pressure dropping by 2.8 mm Hg.
The study found that individuals with obesity and low vitamin D status showed the most improvement in blood pressure. Experts believe that improved calcium regulation, reduced inflammation, and decreased activity of the renin-angiotensin-aldosterone system may be responsible for the decrease in blood pressure.
To determine if vitamin D supplementation is necessary, experts recommend getting a blood test to check for vitamin D deficiency. If levels are low, supplementation or increased exposure to natural sunlight may be beneficial. However, vitamin D supplementation should be part of a larger wellness plan that includes regular exercise, a heart-healthy diet, and effective weight management.
While the study provides promising results, it is important to consult with a healthcare provider before starting a vitamin D regimen, as excessive intake can lead to toxic levels of calcium in the body. Overall, vitamin D supplementation may be a useful addition to a comprehensive approach to managing high blood pressure, particularly for individuals with obesity.