What is the basis for some of the Alaskan Native beliefs as the causes of illness?with at least 2 references

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Alaskan Native Beliefs as the cause of illness:
The people of the Alaskan belt or region always had indigenous beliefs pertaining to their healthcare and ailments. They considered certain cultural beliefs in treating them and hence many a times, aggravated the condition of the illness and hence led to mortality of their population. Iupiat, Yupik, Aleut, Eyak, Tlingit, Haida, Tsimshian, and a number of Northern Athabaskan civilizations are among the indigenous peoples of Alaska, United States. Syphilis, smallpox, measles, mumps, and bubonic plague were among the diseases spread by Europeans, and Native Americans had little immunity to them because they had never been exposed to them. As a result, mortality was higher than if the diseases were native to the Americas. Traditional American Indian views on health and other aspects of life were affected by Indian religion. Health encompasses harmony with oneself, including body, mind, and spirit, harmony with others, and harmony with one's surroundings or environment.
These are broad issues of poor quality of life stemming from economic hardship and poor social situations. Heart...