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.
The Xiongnu (Chinese: åå¥´) were nomads who lived north of China from about 3rd century BC to 460s AD.Their lands were very infertile, so they tried to attack China many times. As this was very irritating, the first emperor of China (Qin Shi Huang) built the Great Wall of China around 214 to 206 BC to keep them out.he Xiongnu (Chinese: åå¥´) were nomads who lived north of China from about 3rd century BC to 460s AD.