Caffeine influenced teenagers'daytime blood pressure, especially among African Americans, according to a study reported in the American Journal of Hypertension (January 2005). The current study, which was based on 24-hour measurements of blood pressure taken with a portable recorder, supported earlier research by the same investigators in which they used one-time readings of blood pressure.
For the study, 41 African American and 41 Caucasian adolescents chose foods and beverages for a 4-day sodium-controlled diet. The participants were separated into 3 groups based on their caffeine intake, and ambulatory blood pressure measurements were taken during 1 of the 4 days. The results showed that both groups'daytime blood pressures increased as caffeine intake rose. A greater effect was seen in the African-American group. The researchers noted, however, that caffeine consumption was not related to nighttime blood pressure.
Although the annual HIV diagnosis rate between 2010 and 2014 decreased for black individuals by 16.2%, blacks remain disproportionately affected by HIV/AIDS.
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