According to the World Health Organization (WHO) a correct cancer diagnosis is vital for adequate and effective treatment because every cancer type requires a specific treatment regimen that encompasses one or more modalities like surgery radiotherapy and chemotherapy and the main goal is generally to treat cancer. Hence it is essnetail for people to know how chemotherapy works. Here Dr Pritam S Kataria Medical and Hemat oncologist at Sir HN Reliance Foundation Hospital Mumbai briefs you about it. What is chemotherapy? Chemotherapy is used in treating cancer. The term chemotherapy refers to the drugs which prevent cancer cells from dividing