1 / 50

Module 12: Community Health

Module 12: Community Health. In the past few decades, there has been significant improvement in the general health of the indigenous peoples of the North Significant disparities remain between indigenous residents and the North American populations at large

stillman
Download Presentation

Module 12: Community Health

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Module 12: Community Health • In the past few decades, there has been significant improvement in the general health of the indigenous peoples of the North • Significant disparities remain between indigenous residents and the North American populations at large • Major risks involve (1) air pollution, (2) social issues (suicides, intoxication), and (3) lifestyle related conditions (obesity, diabetes, circulatory diseases)

  2. Required Reading Health Status of Arctic Residents (Chapter 3 in AMAP Assessment 2002: Human Health in the Arctic) www.amap.no • Click on “Publications Online” on left hand menu • Scroll through publications and select folder for “AMAP Assessment 2002: Human Health in the Arctic” • Click on “Chapter 3”, which will then open in Adobe Acrobat Reader

  3. Infant Mortality: A Success Story

  4. Contrasts in Life Expectancy

  5. Contrasts in Occurrences of Low Live Births (<2500g)

  6. Contrasts in Early Mortalities

  7. Adult Mortality Patterns

  8. Cancer Incidence Rates

  9. Tuberculosis

  10. Diabetes

  11. Oral Health

  12. A Grave Social Issue: Suicide

  13. Conclusions • Mortality patterns of Indigenous peoples in the North is changing due to “Western influences” on diet and lifestyle. Cancer, strokes, and heart disease have become leading causes of death • Injury-caused mortality is disproportionate, with suicide and homicide rates markedly different compared to southern populations • Among certain Arctic peoples, obesity and type II diabetes have increased in incidence • Public health advances have increased life expectancy and decreased early mortality

  14. Module 12: Community Health cont’d Cancer in the Northwest Territories and Nunavut (A Case Study) Northwest Territories Health and Social Services. 2003. Cancer in the Northwest Territories 1990-2000, A Descriptive Report. http://www.hlthss.gov.nt.ca/content/Publications/Reports/Cancer/CancerintheNWT.pdf Nunavut Department of Health and Social Services. 2003. A Ten Year Profile of Cancer in Nunavut. http://www.gov.nu.ca/hsssite/Cancer_NunavutEng.pdf

  15. Cancer in the NWT - Facts • Between 1990 and 1999, an annual average of 34 cancer deaths took place in the NWT/Nunavut • Cancer diagnosis: colorectal cancer in males (22% of all diagnoses) and breast cancer in females (28%) • Lung cancer is the leading cause of cancer death (32%) • The projected cancer burden due to the aging population will present a challenge to the health care system

  16. What is Cancer? • Cancer is the uncontrolled growth of cells in the body • The immune system can normally recognize abnormal cells and destroy them • If cancer cells overcome this defense mechanism, they can multiply and form a lump or a tumor • Benign cancer: its growth remains under some control • Malignant cancer: abnormal cells invade surrounding tissue and spread to other parts of the body (via body fluids)

  17. Risk Factors • Age • Genetics • Repeated dose exposure to external substances (smoke, ultra-violet rays from the sun, environmental agents) • Acute dose exposure: radiation • Obesity • Time lag between exposure and detection means that risk factors are difficult to identify

  18. Collection of Cancer Registration Data

  19. Cancer Incidence (1992-2000)

  20. 1996

  21. 1998

  22. 1999

  23. NWT Male Cancer Diagnoses (1992-2000)

  24. NWT Female Cancer Diagnoses (1992-2000)

  25. Prevention • Better diagnostic approaches • Quitting smoking • Improvements in diet (↑fruits and vegetables) • Reduced obesity • Greater physical activity • Control of glucose levels

  26. Module 12: Community Health cont’d Pollution and Human Health • Few health studies on effects due to exposure to environmental contaminants in the Arctic • Arctic environment has special characteristics so results of “southern” studies may not be applicable • Exposure to contaminants often involves many different substances; risks associated with individual substances are often unknown

  27. Pollution in the Arctic Key environmental characteristics: • Northward movements of air masses • Precipitation of fine particulates in the Arctic due to cold air • Thin ozone layer • Biomagnification of pollutants in food chains (e.g. POPs) • Extensive consumption of “country” food

  28. POPs in the ArcticTotal DDT in maternal blood

  29. POPs in the ArcticTotal PCBs in Maternal Blood

  30. POPs in the ArcticConcentration of Chlordanes in Maternal Blood

  31. POPs in the ArcticHexachlorobenzene in Maternal Blood

  32. Benefits of Traditional Foods versus Risks from POPs • For northern communities, traditional foods are vital to cultural and physical well-being • Considering values for tolerable daily intake of POPs, most Arctic jurisdictions advise people to continue to eat traditional foods (on balance, traditional foods are best for health of Indigenous peoples)

  33. Breast Feeding versus POPs Exposure • Effects of contaminants in breast milk are poorly understood • Breast milk, especially during the first few weeks, is most important for immune system of newborns – milk intake is relatively low • Most health agencies advise that the benefits of breast feeding outweigh the risks of POPs

  34. Heavy Metal in the ArcticMercury in Maternal Blood Source: Mostly through meat, as methyl mercury

  35. Heavy Metals in the ArcticCadmium in Maternal Blood

  36. Key Points About Cadmium • Main Concern: • Toxic effects on the kidney (irreversible) • Main Source: • In tobacco, kidney and liver of caribou (lichen pathway) • Fetus OK: • The growing fetus is protected from cadmium because placenta accumulates the metals  to be disposed at birth

  37. Radiation in the Arctic • Main Concern: • Chronic exposure to natural and anthropogenic radionuclides leads to an increased risk of cancer • Sources: • Nuclear accidents and nuclear testing • Good News: • Anthropogenic radionuclides in the Arctic are declining • Ghost of the Past: • Because of the accumulation of some radionuclides in Arctic food chains, the exposure is generally higher in the Arctic than for populations in temperate latitudes

  38. Ultraviolet Radiation in the Arctic • Depletion of ozone increases the amount of ultraviolet radiation reaching the Earth’s surface • Depletion of ozone greatest at Poles • Reflective snow cover can make the effects of ultraviolet radiation exposure especially pronounced in the Arctic

  39. Effects of Ultraviolet Radiation • Surface of the eyeball becomes inflamed  up to snow blindness (especially in spring) • Sunburns • Risk of skin cancer (decreased among persons with darker skin complexion) • Aging of skin • Greater protection from clothing helps

  40. Risk Reduction Strategies of Arctic Pollution • International, regional and national risk management approaches • Regulations (to manufacture new compounds) • Monitoring • Targeted epidemiological studies Have a good summer!

More Related