In the lead up to World Radiotherapy Awareness Day on 7 September 2025, Targeting Cancer is taking the opportunity to de-bunk several common myths surrounding radiation therapy.
One of the most effective and widely used treatments for cancer is radiation therapy, but despite its long history and proven success, myths and misunderstandings persist.
At Targeting Cancer, we believe that informed patients make empowered decisions. So, let’s set the record straight by busting five common myths about radiation therapy.
Myth 1: Radiation therapy is painful.
The actual delivery of radiation is painless. You don’t feel the radiation as it’s being given. Some people experience fatigue or skin changes during treatment, but many continue their usual activities throughout.
Myth 2: Radiation makes you radioactive.
External beam radiation therapy does not make you radioactive. You’re not a danger to your loved ones, pets, or anyone around you. In some rare cases, such as internal radiation (brachytherapy), temporary precautions may be advised—but your team will explain everything clearly.
Myth 3: Radiotherapy is only for people who can’t have surgery.
Radiation therapy is often used alongside surgery or chemotherapy … or as a first-line treatment in its own right. In some early cancers, such as prostate, lung and head and neck cancers, radiotherapy can achieve cure rates similar to surgery.
Myth 4: The side effects are worse than the cancer.
Side effects vary by treatment area, dose, and the individual. Today’s radiation therapy is highly precise, using advanced imaging and planning to minimise impact on healthy tissue. Most side effects are manageable and temporary.
Myth 5: Radiation therapy causes secondary cancers.
This is extremely rare. While a small risk exists, it’s far outweighed by the benefit of treating the primary cancer. Modern technology has significantly reduced radiation exposure to surrounding healthy tissues.
Radiation therapy is safe, effective, and constantly evolving. Today’s techniques such as intensity-modulated radiation therapy (IMRT), image-guided radiation therapy (IGRT), and stereotactic radiotherapy (SABR) offer unprecedented precision and better outcomes than ever before.
Your radiation oncologist is your guide throughout treatment, ensuring it’s tailored to your cancer, your body, and your life.
- If you’re curious about how radiation therapy works, who’s involved in your care, or what to expect, visit our page on What is Radiation Therapy and Meet the team.
For other trusted information, explore these resources:
