Aging in American Indians is associated with unfavorable changes in cardiovascular disease risk factors, particularly hypertension and diabetes, which likely worsen morbidity and mortality.
OBJECTIVES: To describe longitudinal changes in the prevalence of major cardiovascular disease (CVD) risk factors in aging American Indians. DESIGN: Population-based ongoing epidemiological study. SETTING: The Strong Heart Study is a study of CVD and its risk factors. Standardized examinations were repeated in 1993 to 1995 and again in 1997 to 1999. PARTICIPANTS: A diverse cohort of 4,549 American Indians aged 45 to 74 at the initial examinations in 1989 to 1991. MEASUREMENTS: Changes in the prevalence of hypertension, low-density lipoprotein cholesterol (LDL-C), high-density lipoprotein cholesterol (HDL-C), current smoking, and type 2 diabetes mellitus. RESULTS: The prevalence of hypertension rose rapidly and steadily with aging. A nonsignificant decrease in LDL-C was seen in men, and men and women initially had rapid increases in the prevalence of low HDL-C. The prevalence of smoking decreased, but the prevalence of diabetes mellitus continued to rise for men and women. CONCLUSION: Overall, unfavorable changes in CVD risk factors were seen in the aging participants and will likely be reflected in worsening morbidity and mortality.
Rhoades et al. (Mon,) studied this question.
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