Health Sciences 1001A/B Lecture Notes - Canadian Cancer Society, Melanoma, Sun Tanning
28 Apr 2013
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Document Summary
Tumour a mass of cells with no physiological purpose. Benign tumour only dangerous if it interferes with other body functions. Malignant tumour cancerous, can spread to surrounding tissues ( metastasis ) Cancer is the second leading cause of death in canada second to heart disease. 45% men and 40% women will have cancer in their lifetime aging population people live longer and get exposed to more cancer causing factors- 89% diagnosed over 55 young adult cancer risk. Canadian cancer society (2009) report on young adults (ages 15-19) F>m diagnosed with cancer but slightly m>f died from cancer: unknown risk factors, are cancer types, aggressive progression, delayed diagnosis treatment. Signs and symptoms: lumps in body (e. g. , neck, breast, testes); isolated pain in their body; fatigue. Mutagens-substances that causes mutation in dna (any form of substances. Carcinogens/ cancer initiator - mutagens that causes cancer. New evidences shows that lifestyle factors are related to modifications in dna.
