Cancer treatment has evolved rapidly over the last few decades. While chemotherapy has been a mainstay of cancer care for years, newer treatments like immunotherapy have transformed outcomes for many patients. This progress has also raised an important question among patients and caregivers: Is immunotherapy better than chemotherapy?
According to Dr. Deepak Jha, Chief – Breast Surgery & Senior Consultant, Surgical Oncology at Artemis Hospitals, Gurugram, the comparison is often misunderstood.
“When we compare immunotherapy and chemotherapy, we are not trying to decide which treatment is stronger. The focus is always on which treatment is more suitable for a particular patient and cancer type,” says Dr. Jha.
The choice of treatment depends on multiple factors, including the patient’s overall health, the type and stage of cancer, and how aggressively the disease is behaving.
Chemotherapy: The Backbone of Cancer Treatment
Chemotherapy has been used for decades and remains one of the most effective tools in cancer management. It works by targeting rapidly dividing cells, a hallmark of cancer.
“Chemotherapy attacks cancer cells directly and is especially useful when the disease is widespread or fast-growing,” explains Dr. Jha.
Because chemotherapy drugs circulate throughout the body, they are effective against cancers that have spread beyond their original site. This makes chemotherapy an essential part of treatment for many cancers, including breast cancer, lung cancer, blood cancers, and gastrointestinal malignancies.
Why Chemotherapy Is Still Widely Used
- It can shrink tumors before surgery
- It can destroy microscopic cancer cells after surgery
- It can control symptoms and slow disease progression in advanced cancer
However, chemotherapy does not differentiate perfectly between cancer cells and healthy fast-growing cells.
“That is why patients may experience side effects such as hair loss, nausea, fatigue, and low immunity,” Dr. Jha notes.
Advances in supportive care, better drug combinations, and improved dosing schedules have significantly reduced the severity of side effects, allowing most patients to complete treatment safely.
Immunotherapy: Teaching the Immune System to Fight Cancer
Immunotherapy is a newer approach that works very differently from chemotherapy. Instead of attacking cancer cells directly, it trains the immune system to recognize and destroy cancer cells.
“Cancer cells often escape the immune system by hiding or switching off immune responses. Immunotherapy helps remove these barriers,” says Dr. Jha.
Immunotherapy includes treatments such as immune checkpoint inhibitors, monoclonal antibodies, and cancer vaccines. These therapies have shown remarkable success in cancers like melanoma, lung cancer, kidney cancer, and certain types of breast cancer.
Key Advantages of Immunotherapy
- It can produce long-lasting responses in some patients
- Side effects are often different and sometimes milder than chemotherapy
- It may keep cancer under control for extended periods
However, immunotherapy does not work for everyone.
“Not all cancers respond to immunotherapy, and not all patients are suitable candidates,” Dr. Jha cautions.
Because immunotherapy activates the immune system, it can sometimes lead to immune-related side effects such as inflammation of the lungs, liver, intestines, or thyroid. Early detection and prompt management are crucial.
Which Treatment Works Better? The Real Answer
There is no universal winner when comparing immunotherapy and chemotherapy. The effectiveness of each treatment depends on several critical factors.
“The type of cancer, its stage, and the patient’s overall condition guide our decision. One treatment is not better than the other in all cases,” explains Dr. Jha.
Cancer Type Matters
Some cancers respond extremely well to chemotherapy, while others show dramatic improvement with immunotherapy. For example:
- Chemotherapy remains central to breast cancer treatment
- Immunotherapy has transformed outcomes in certain lung cancers
- In some cancers, immunotherapy is effective only when specific biomarkers are present
Stage of Cancer
- Early-stage cancers may benefit more from chemotherapy after surgery
- Advanced or metastatic cancers may respond better to immunotherapy in selected patients
Patient Health and Fitness
Patients with autoimmune diseases or poor immune function may not be suitable for immunotherapy. Similarly, some patients may not tolerate chemotherapy well.
Combination Therapy: Using Both for Better Results
Modern cancer treatment increasingly uses combination therapy, where chemotherapy and immunotherapy are given together.
“In many cases, combining chemotherapy with immunotherapy gives better results than using either alone,” says Dr. Jha.
Chemotherapy can weaken cancer cells and make them more visible to the immune system, while immunotherapy enhances the immune response. This approach has improved outcomes in breast cancer, lung cancer, and several other malignancies.
Side Effects: What Patients Should Know
Understanding side effects helps patients prepare better for treatment.
Common Chemotherapy Side Effects
- Hair loss
- Nausea and vomiting
- Fatigue
- Increased risk of infections
Common Immunotherapy Side Effects
- Skin rashes
- Fatigue
- Thyroid problems
- Immune-related inflammation
“The good news is that most side effects are manageable if patients report symptoms early,” Dr. Jha emphasizes.
Personalized Cancer Care Is the Future
Cancer treatment today is highly personalized. Doctors use advanced tests, biomarkers, and imaging to decide the most effective approach for each patient.
“The era of one-size-fits-all cancer treatment is over. Our goal is to choose a therapy that maximizes benefit while minimizing harm,” says Dr. Jha.
This personalized approach improves survival rates and quality of life.
The question of immunotherapy versus chemotherapy does not have a simple answer. Both treatments play vital roles in modern oncology.
“What matters most is not which treatment is newer or stronger, but which treatment is right for the patient,” concludes Dr. Deepak Jha.
With thoughtful planning, evidence-based decisions, and advances in research, many patients today are living longer and better lives after a cancer diagnosis.
