The slavery hypothesis for hypertension among African Americans: the historical evidence.
P D Curtin
Department of History Johns Hopkins University in Baltimore, Md. 21218.
The slavery hypothesis for hypertension has stated that thehigh blood pressures sometimes measured in African Americansare caused by one or more of these conditions: first, salt deficiencyin the parts of Africa that supplied slaves for the Americas;second, the trauma of the slave trade itself; third, conditionsof slavery in the United States. A review of the historicalevidence shows that there was no salt deficiency in those partsof Africa, nor do present-day West Africans have a high incidenceof hypertension. Historical evidence does not support the hypothesisthat deaths aboard slave ships were caused mainly by conditionsthat might be conductive to hypertension, such as salt-depletingdiseases. Finally, the hypothesis has depended heavily on evidencefrom the West Indies, which is not relevant for the United States.There is no evidence that diet or the resulting patterns ofdisease and demography among slaves in the American South weresignificantly different from those of other poor southerners.
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