Simple practices such as mindfulness, gratitude journaling, and optimism training may improve several markers of cardiovascular health within a matter of weeks. A recent study found that these positive psychology interventions were consistently associated with improvements in blood pressure, inflammation, and other heart disease risk factors. Because some of the benefits appeared to be connected with healthier behaviors, including better eating habits and increased physical activity, the researchers said continued reinforcement may be necessary to maintain progress over time.
Rosalba (Rose) Hernandez, a professor of social work at the University of Illinois Urbana-Champaign, led the research team. The group reviewed results from 18 randomized controlled trials that tested positive psychology and mindfulness interventions designed to improve mental or physical health. The programs varied widely in how they were delivered.
Some relied on structured phone sessions, journaling paired with brief check-ins, or digital tools such as apps and text messages. Others involved interactive in-person group meetings or hybrid approaches that combined face-to-face activities with online tools and virtual sessions. Most programs included weekly sessions along with activities participants completed at home to reinforce what they had learned.
The majority lasted between six and 12 weeks. The studies generally enrolled groups of 50-200 adults who already had elevated cardiovascular risk, including uncontrolled hypertension, heart failure, or other health conditions. Participants were usually in their late 50s to mid-60s.
Among studies that reported gender, women made up 35-55% of the participants. "In hypertension and postacute coronary syndrome cohorts, mindfulness-based programs delivered over an eight-week period reduced systolic blood pressure and lowered inflammatory markers such as high-sensitivity C-reactive protein and fibrinogen," said Hernandez, who is a Fellow of the American Heart Association. "A 12-week spirituality-based digital intervention achieved one of the largest reductions -- reducing systolic blood pressure measured with a standard cuff by 7.6 points, and central systolic pressure -- which is measured in the aorta as it leaves the heart -- by 4.1 points." Previous research on positive psychology often did not clearly establish how frequently people needed to practice these techniques, or for how long, to gain health benefits, Hernandez said.
Her team wanted to determine what level of participation was most consistently associated with improvements in cardiovascular health. The review showed that programs with more frequent participant contact tended to produce the most reliable physiological benefits. Hernandez said this finding highlights the potential value of incorporating positive psychology strategies into long-term cardiovascular treatment and prevention.
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