non-communicable diseases -CH7

non-communicable disease

cannot be passed from a person to another

risk factors

aspect of lifestyle that are linked to an increased risk of disease e.g. alcohol, smoking

carcinogen

risk factor for cancer e.g uv, obesity, ionising radiation

non-cancerous and don’t invade other organs

benign tumour

cancerous tumours, invade other tissues

malignant tumour

forms when the cell cycle is lost and cells grow in an abnormal and uncontrolled way

tumour formation

metastasis

the spreading of cancer

radiotherapy

stops mitosis of cancer cells but can damage healthy cells

chemotherapy

stops the cancer sells dividing and makes them ‘self-destruct’

coronary heart disease, lung cancer and bronchitis

smoking causes