There have been many, much-needed discussions about race and race relations in the US recently. Like, a lot. Even Beyoncé and the U.N. have gotten involved. Epidemiologists have too. Actually, we’ve been interested in the topic, and its effects on health, for quite some time. This, despite the fact that the scientific community hasn’t always been on the right side of history.
Anyway. Way back in 2007, a group of researchers conducted a cross-sectional study to determine whether or not experiences of racial discrimination affect individual health outcomes, in this case hypertension (a.k.a., high blood pressure). Specifically, they aimed to compare the odds of hypertension among persons reporting never perceiving racial discrimination with those who reported perceiving nonracial discrimination (e.g., ageism, sexism); whether or not the frequency of perceived racial or nonracial discrimination modified observed associations with hypertension in a dose-response manner; and whether these associations differed by gender. Their study population was a cohort of African-Americans living in Pitt County, North Carolina who had previously participated in the Pitt County Study, originally initiated in 1988. They called their study, “Cross-Sectional Association between Perceived Discrimination and Hypertension in African-American Men and Women: The Pitt County Study.” For the record, epidemiologists are really bad at naming stuff.
In this study, participants were asked to give frequency ratings (5 being “almost every day” and 0 being “never”) to a series of statements that measured perceptions of how they were treated in society. Participants were asked to choose the most important reason for this discrimination from either “age, gender, height or weight, shade of skin color, or other.” Diastolic blood pressure was then measured by a trained technician with a digital device. This is great, because do you know your diastolic blood pressure off the top of your head? Yeah. Me either.
So, what did our researchers discover? That 89% of African-American men and 85% of African-American women participants reported experiencing discrimination during their lifetime. They also found that men were more likely than women to attribute this discrimination to race (57% of men to 42% of women). Further age-adjusted analysis showed that women who did perceive any type of discrimination experienced a greater risk of hypertension that grew with the amount of discrimination they experienced. In men, however, the pattern stood on its head. The more men perceived discrimination, the lower their risk of hypertension.
Let’s talk about why this study is important. More African-American men and women develop hypertension than any other racial/ethnic group, and they develop it a lot earlier. Which isn’t good, because hypertension is a huge risk factor for a number of very serious health outcomes, most notably heart attack and stroke. And while we do understand many risk factors for hypertension, the link between hypertension and stress is not always as clear. For example, the American Heart Association indicates that poorly managed stress may cause bad health behaviors, such as overeating, but admits that we do not truly understand the effects of chronic stress on our health.
What our study and the current conversations about race have in common is an investigation of the potential effects of systemic racism on the health and wellness of African-Americans. Individuals, communities, and policy makers would do well to join in the present conversation to determine how best to remedy the huge amount of discrimination African-Americans in this study, and in this country, face on a daily basis, and to further investigate the detrimental effects this discrimination may have on African-American women in particular.
*Note this post was originally completed in 2016 under the title “Does Discrimination Affect Your Health?” to fulfill a grad school course assignment.