cancer

• what is a tumour?

  a large number of cells that undergo uncontrolled growth and divison
• what are benign tumours?

  unharmful (non-cancerous) tumours
• what are malignant tumours?

  tumours that can cause cancer
• how do malignant tumours work?

  they dont stay in one place and they spread to different parts of the body

  -> then form secondary tumours which cause a lot of damage
• risk factors of cancer?

  • smoking -> lung cancer
  • obesity -> liver cancer
  • UV -> skin cancer
  • genes from our parents -> breast cancer