Study links spirituality to healthier blood pressure

As a preventive cardiologist, one of the most common conditions I treat is hypertension. And no wonder — nearly half of U.S. adults have high blood pressure, an otherwise silent condition that can lead to serious complications like heart disease or stroke.

Medications can help, but most of my patients are interested in minimizing their need for those and deploying every lifestyle avenue available to achieve their BP goal. Losing weight, quitting smoking, exercising regularly, sleeping well, managing stress, and avoiding sodium and stimulants (like caffeine and alcohol) can all make a big difference.

But new research opens yet another avenue to lower blood pressure readings — spirituality and gratitude.

A groundbreaking study presented at the American College of Cardiology’s Annual Scientific Session found that people with high blood pressure who engaged in daily spiritual practices saw their systolic blood pressure drop by an average of 7 mmHg. This is a medication-level reduction!

In addition, participants also experienced improvements in the health of their blood vessels, as measured by flow-mediated dilation (FMD), a key marker of cardiovascular health.

The Power of Spirituality and Gratitude

The study, conducted in Brazil, followed 100 patients with hypertension over 12 weeks. Half of the participants received daily messages via their smartphones, designed to encourage spiritual reflection and practices such as gratitude, optimism, and forgiveness. These messages were simple yet impactful, inviting participants to take a few moments out of their day to focus on life’s purpose or complete small tasks like sending a message of thanks to someone.

The results were striking. Alongside the 7 mmHg drop in blood pressure, participants in the spirituality group saw their FMD increase by 4.5 percent, indicating healthier blood vessels and better cardiovascular function overall. In contrast, those who didn’t receive the intervention actually experienced a decline in FMD by 3 percent.

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Spirituality Without Boundaries

One of the most compelling aspects of this study is that the intervention wasn’t tied to any specific religious tradition. Instead, it focused on universal concepts such as gratitude and forgiveness, making it accessible to anyone regardless of faith background. 

While previous studies have hinted at the connection between spirituality and heart health, most have been observational, making it difficult to prove a direct link. This new study adds to the growing body of evidence that suggests focusing on positive emotions can lead to measurable health improvements.

Our Complex Self

In medical school, we are taught to look at the body in bits and pieces. Organ systems, targeted pharmaceuticals, treatment sub-specialization.  But when doctors finally go into practice, if they are observant and curious enough, they quickly see that nothing about the human body or human health is separate or isolatable.  

This is why relying only on targeted pharmaceuticals represents a narrow view of health and healing.  Each of us has the ability to help ourselves heal from within.  That doesn’t mean drugs are bad — but why not leverage our complexity to our advantage?  Including our emotions.  

Remember, a key pillar of healthy longevity is a sense of purpose and joy – a sense that is supported by feelings of gratitude, optimism and forgiveness.  What this new research confirms is that those emotions don’t just make us feel good —  they also measurably improve health.