Sherpas are descended from nomads who settled in the
Himalayas near
Mount Everest: the
Khumbu and Solu regions of
Mahālangūr Himāl. This area is along the border between Nepal and
China. It is in the
Solukhumbu District of
Koshi, the easternmost
province of Nepal and south of China's
Tibet Autonomous Region. Oral Sherpa history lists four clans who migrated from
Kham to Solukhumbu: Minyakpa, Thimmi, Lamas Sherwa, and Chawa. These clans evolved into more than 20 groups. During the 13th and 14th centuries, conflict with
Mahayana Buddhism may have contributed to Sherpa migration from Tibet to Nepal's Khumbu regions. Before crossing into the Himalayas, Sherpa migrants traveled through
Ü and Tsang. By the 15th century, the
Khumbu Sherpas attained autonomy in newly-formed Nepal. As tensions with China increased in the 1960s,
Nepali government influence on the Sherpas grew. Khumbu became a national park in 1976, and tourism became a major economic sector. The word
sherpa derives from the Tibetan words (, "east") and (, "people"). The reason for this derivation is unclear, but a common explanation notes that the Sherpas originated in eastern
Tibet. The community is based in the Nepalese highlands, however, which is south of Tibet.
Genetics Genetic studies indicate that much of the Sherpa population has
allele frequencies which are often found in other Tibeto-Burman regions. In tested genes, the strongest affinity was for Tibetan-population-sample studies in the
Tibet Autonomous Region. The Sherpa also exhibited an affinity for several Himalayan tribes; the strongest was for the
Rai people, followed by the
Magars and
Tamang. A 2010 study identified more than 30 genetic factors that make Tibetan bodies well-suited for high altitudes, including
EPAS1: the "super-athlete gene" which regulates the body's production of hemoglobin, allowing greater efficiency in the use of oxygen.
Haplogroup distribution A 2014 study found that substantial genetic components from the Indian subcontinent were found in Tibetan Sherpas. The western Y chromosomal
haplogroups R1a1a-M17, J-M304, and F*-M89 make up almost 17 percent of the paternal gene pool in tested individuals. on the maternal side, M5c2, M21d, and U from the west are found in up to eight percent of people in a given Sherpa population. A 2015 study did not support the results of the previous year's study; the 2015 study concluded that genetic sharing from the Indian subcontinent was limited, Sherpa
mtDNA distribution shows greater diversity;
Haplogroup A was found most frequently, followed by
Haplogroup M9a,
Haplogroup C4a, Haplogroup M70, and
Haplogroup D. These haplogroups are also found in some Tibetan populations. Two common mtDNA sub-haplogroups unique to Sherpas populations were identified: Haplogroup A15c1 and Haplogroup C4a3b1. == Mountaineering ==