What is Chemotherapy?
Chemotherapy uses anti-cancer drugs to destroy or slow the growth of cancer cells. It is one of the most widely used systemic treatments in oncology and may be given alone or combined with surgery, radiation, immunotherapy, or targeted therapy depending on cancer type and stage.
How Chemotherapy Works
Chemotherapy targets rapidly dividing cells. While it affects cancer cells, it can also impact healthy cells such as those in the bone marrow, digestive tract, and hair follicles — which explains common side effects. Modern protocols use precise dosing schedules and supportive medicines to improve tolerability and outcomes.
Types of Chemotherapy
- Neoadjuvant chemotherapy: Given before surgery to shrink tumours.
- Adjuvant chemotherapy: Given after surgery to reduce recurrence risk.
- Palliative chemotherapy: Controls symptoms and slows advanced cancer.
- Combination regimens: Multiple drugs used together for greater effectiveness.
Common Side Effects and Supportive Care
Side effects vary by drug and individual response. Your oncologist monitors blood counts, organ function, and symptoms throughout treatment. Supportive care may include anti-nausea medicines, growth factors, nutritional guidance, and infection prevention.
When to Consult an Oncologist
Consult a specialist if you have a new cancer diagnosis, need a second opinion on chemotherapy plans, or experience persistent side effects during treatment. Early specialist review helps tailor the safest and most effective regimen.
Frequently Asked Questions
Is chemotherapy always necessary?
Not every patient requires chemotherapy. Treatment depends on cancer type, stage, biomarkers, and overall health.
How long does a chemotherapy cycle last?
Cycles typically range from 1 to 4 weeks, with rest periods between cycles to allow recovery.
Can chemotherapy cure cancer?
In some cancers, chemotherapy contributes to cure when combined with surgery or radiation. In advanced disease, it often controls growth and improves quality of life.
