Question

1. Describe the epidemiology of colorectal cancer

Answer 1

In epidemiology of a disease we study about the distribution of that disease,determinats of health realted events in a specific population related to that disease.

Epidemiology of colorectal cancer is following:world wide colorectal cancer is on 3rd position in males and on2nd in females.Mortality is more higher in males than females.

Incidence:the highest incidence rate of colorectal cancer in the following countries - Australia,New Zealand,North America. Lowest in Africa and South Central aisa.This difference is due to - dietary variation, environmental condition .

Risk factors: poor socioeconomic condition because it affects diet and nutritional status.

Unhealthy diet , smoking, decrease physical activity, obesity,low consumption of dietary fibres in diet.

Age is also a risk factor but it is risk factor in sporadic cases.

Data showing that colorectal cancer is less common below 40 years of age and more common after 50 years.

Environmental and genetic factor are also very important in this because if a genetically suspectable person interact with the environment that has risk for colorectal cancer, it's very common of having colorectal cancer in that person.

Some syndromes have association and risk for it - hereditary colorectal cancer syndromes: adenomatous polyposis syndrome,mutyh associated polyposis,Lynch syndrome.

Mortality: mortality is more common in males than female. Due to screening and early detection of colon polyps and removal of that causing decrease in mortality. worldwide the United States has one of the best survival rates.

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