These health-related causes and impacts of elevated hematocrit levels have been reported: 1  Fall in plasma levels. 2  Sleep apnea. 3  Dehydration. 4  In cases of dengue fever, a high hematocrit is a danger sign of an increased risk of dengue shock syndrome.
The Hmong traditionally farmed in the mountainous areas of China, Vietnam, Laos, and Thailand. Most of the Hmong were subsistence farmers who grew only enough food to feed their families, because farming was difficult in the mountainous regions where most of them lived.
You are here. The Foreign-Born Hmong in the United States. The summer of 2004 marked the beginning of the latest refugee wave from the U.S. Cold War involvement in Indochina. Over 15,000 Hmong refugees from Laos, who have spent years in Thailand, are being resettled in the U.S..