The review, led by Mohd Abdullah Al Mamun of Bangabandhu Sheikh Mujib Medical University together with colleagues including Keertika Orchi, Arna Chowdhury, Sohel Reza Choudhury, and M Atiqul Haque, systematically combed five major electronic databases for studies published between 1995 and 2024. The team screened 1,379 records, eliminated 645 duplicates, and ultimately included 32 studies comprising more than 21,990 participants aged 18 to 95. Twenty of the studies were randomized controlled trials, the methodological gold standard, while the remainder used quasi-experimental, community-based, crossover, or longitudinal designs. The search was registered in PROSPERO and conducted according to PRISMA guidelines, with two independent reviewers screening every record and resolving disagreements by consensus.

The researchers applied a deliberately practical definition of cultural adaptation. An intervention qualified if its content, delivery, or materials had been modified to match the language, dietary habits, beliefs, or social practices of the target population. That meant ethnic-specific recipes and foods, language-matched educational materials, delivery by community or lay health workers drawn from the same community, or culturally appropriate physical activities and social gatherings. This operational definition was applied uniformly throughout screening and data extraction, giving the review a consistent yardstick across three decades of research.

The findings fall into three broad domains: behavioral and educational interventions, exercise-based programs, and dietary strategies. In the behavioral domain, multi-component programs that combined health education with physical activity, self-monitoring, and group participation generally produced significant reductions in systolic or diastolic blood pressure. A community clinic program for African Americans reported a drop of more than 20 mmHg in systolic pressure over nine months, while nurse-led, culturally appropriate hypertension education for Surinamese and Ghanaian communities in the Netherlands achieved a significant diastolic improvement of roughly 3 mmHg over six months. By contrast, interventions that relied solely on counseling or education without intensive behavioral components, such as an automated telephone counseling system, yielded smaller or statistically non-significant changes.

Exercise interventions delivered some of the most striking results. A 12-week Tai Chi program in the United States reduced resting blood pressure from 150/86 to 131/77 mmHg among participants with cardiovascular risk factors. A culturally appropriate diet-and-exercise program delivered in Urdu to Pakistani immigrant women in Australia significantly lowered both systolic and diastolic pressures by week 24. Community walking groups supported by peer coaches and faith-based organizations, supervised group walking in Spain, and even brief innovations such as inspiratory muscle strength training, which lowered systolic pressure from 135 to 126 mmHg in six weeks, all demonstrated measurable benefits. Notably, even light walking breaks during prolonged sitting lowered systolic pressure by 4 mmHg compared with uninterrupted sitting, suggesting that consistency and cultural relevance may matter more than exercise intensity alone.

The strongest and most consistent evidence, however, came from dietary interventions. GRADE assessment rated the certainty of evidence for dietary strategies as moderate, compared with very low for the behavioral and exercise domains, reflecting a larger and more consistent evidence base anchored by several very large trials. Among the standouts was a Chinese cuisine-based heart-healthy diet trial, in which participants following the culturally tailored diet achieved a 15.0 mmHg reduction in systolic pressure over 28 days, compared with 5.0 mmHg in the control group, a net difference of 10 mmHg, alongside a 3.8 mmHg greater diastolic reduction. This was the largest effect observed across the entire review.

Other dietary studies reinforced the central role of sodium. A trial among Tibetan participants using a low-sodium, high-potassium salt substitute achieved net systolic reductions of roughly 8 mmHg, and blood pressure control rates nearly doubled compared with regular salt. A community kitchen program in England, in which Bengali workers helped participants cook traditional meals with 50 percent less salt, reduced 24-hour systolic pressure by 8 mmHg. Controlled feeding studies showed systolic pressure falling by 5.5 mmHg on low-sodium diets and rising again on high-sodium regimens. The DASH diet, examined in multiple trials, consistently produced substantial reductions, particularly when combined with weight management. Even a return to tradition proved powerful: a 21-day trial feeding Native Hawaiians a pre-Western-contact diet of taro, sweet potato, fish, and fruit lowered systolic pressure by 11.5 mmHg.

Yet the review also exposes a glaring geographic imbalance. Nineteen of the 32 studies were conducted in the United States, with the remainder scattered across China, the United Kingdom, Australia, Spain, the Netherlands, South Korea, and East Jerusalem. Low- and middle-income countries, where the burden of hypertension is rising fastest and health systems are least equipped to manage chronic disease through medication alone, remain strikingly underrepresented. The authors argue that this gap is not merely an academic inconvenience. Interventions developed in wealthy nations often depend on specialized professionals, stable health infrastructure, digital technologies, costly dietary components, or commercial exercise facilities that simply do not exist or are unaffordable in resource-constrained settings, so direct transposition is likely to fail without adaptation.

The authors are candid about the limitations. Risk-of-bias assessment using the Cochrane RoB-2 tool found most randomized trials at low risk or with some concerns, while the modified Downs and Black checklist rated the non-randomized studies as fair, good, or poor in roughly equal measure. Certainty of evidence was very low for behavioral and exercise interventions due to serious risk of bias, imprecision, and suspected publication bias, meaning those reported reductions should be read as indicative rather than precise. The search excluded grey literature, publication bias could not be ruled out, and the restriction to English-language full texts may have excluded relevant evidence from non-English-speaking settings. Wide variation in intervention duration and outcome measurement also made direct comparisons difficult.

Even with those caveats, the overall message is compelling and carries real public health weight. Multi-component, group-based, community-centered programs that respect the food people actually eat, the language they speak, and the social settings where they live produced the greatest and most durable blood pressure reductions. Even small population-wide decreases in blood pressure translate into large reductions in cardiovascular disease, which makes cheap, culturally resonant lifestyle strategies an attractive complement or alternative to pharmacotherapy, especially where medication access is limited. The review’s authors call for future research to prioritize low- and middle-income country populations, longitudinal designs that test long-term adherence, digital delivery and peer support models, standardized outcome measures, and cost-effectiveness analyses. If hypertension is to be tamed on a global scale, they suggest, the prescription will not be written in a single language or cuisine, but in many.

Subject of Research: Effectiveness of culturally adapted lifestyle intervention packages for lowering blood pressure in adults

Article Title: Effectiveness of culturally adapted lifestyle intervention package on blood pressure: A systematic review

Article References: Mamun, M. A. A., Orchi, K., Chowdhury, A., Choudhury, S. R., & Haque, M. A. (2026). Effectiveness of culturally adapted lifestyle intervention package on blood pressure: A systematic review. Public Health in Practice, 12, Article 100846. https://doi.org/10.1016/j.puhip.2026.100846

Image Credits: AI Generated

DOI: 10.1016/j.puhip.2026.100846

Keywords: hypertension, blood pressure, cultural adaptation, lifestyle intervention, systematic review, DASH diet, sodium reduction, physical activity, public health, low- and middle-income countries, non-communicable diseases, cardiovascular disease