ep 12 - Radiation Therapy Explained: What It Really Does to the Body

Radiation therapy is one of the most common cancer treatments in the world, yet many people begin treatment without fully understanding what radiation actually does inside the body. In Episode 12 of The After. Cancer Podcast, Dr. Leslie Waltke explains radiation therapy in clear, compassionate language—breaking down how radiation works, why side effects occur, and how the body heals afterward. This episode explores: • How radiation damages cancer cells • Why healthy tissue can also be affected • Fatigue, skin changes, fibrosis, and tightness • Why radiation side effects can continue long after treatment ends • The importance of stretching, movement, and exercise • How rehabilitation helps people recover function and quality of life CHAPTERS: 00:00 Introduction 00:14 What radiation therapy actually is 01:45 Why radiation sounds frightening 02:50 How radiation damages cancer cells 04:10 Why healthy tissue is affected too 05:15 Skin changes, fibrosis, and tightness 06:30 Fatigue during radiation therapy 07:20 Why radiation is highly precise 08:00 The radiation oncology team explained 09:00 Recovery, stretching, and rehabilitation 10:00 Exercise and long-term survivorship 10:30 Reflection + closing thoughts 11:05 ABCD shoutout + outro This is Part 4 of the 4-part Cancer 101 series. This podcast is brought to you in partnership with CURE. For more information, visit CUREtoday.com. Resources Mentioned in This Episode • ABCD – After Breast Cancer Diagnosis (free, virtual emotional support) https://abcdbreastcancersupport.org • ABCD Mentor Program https://abcdbreastcancersupport.org/get-involved/become-a-mentor/ Episodes Mentioned / Related ACP Episodes Episode 9 – Cancer Cell 101 https://youtu.be/k9_NkHp1rZ8 Episode 10 – Cancer Surgery 101 https://youtu.be/ESWK-oB3muM Episode 11 – Chemotherapy 101 https://youtu.be/jdJc3u7HMlU Episode 13 – Exercise During and After Cancer Treatment - coming soon! Community Shout Outs ABCD – After Breast Cancer Diagnosis https://abcdbreastcancersupport.org https://abcdbreastcancersupport.org/get-involved/become-a-mentor/ ABCD: After Breast Cancer Diagnosis provides free, personalized emotional support to anyone impacted by breast cancer, anywhere, at any stage. About the Host Dr. Leslie Waltke is an internationally respected oncology physical therapist, educator, and advocate for evidence-based cancer survivorship care. About The After. Cancer Podcast The After. Cancer Podcast explores the real experience of living with and beyond cancer — the side effects, the fear, the identity shifts, and the path forward that few people talk about. Subscribe / Follow CTA • Follow on YouTube and your favorite podcast platform • Join the email list: https://drwaltke.myflodesk.com/aftercancer • Share The After. Cancer Podcast with someone who needs it Professional Education (Waltke Cancer Rehabilitation Academy) Dr. Leslie Waltke is available for keynote speaking, CME and CEU education, consulting, and cancer rehabilitation program development through the Waltke Cancer Rehabilitation Academy. Learn more: https://www.waltkeacademy.com Contact Information [email protected] drlesliewaltke.com Topics radiation therapy explained, radiation side effects, fibrosis after radiation, cancer fatigue, oncology rehab, cancer rehabilitation, cancer survivorship, cancer education, After Cancer Podcast f you are navigating cancer, survivorship, treatment side effects, or the emotional realities of life after diagnosis, The After. Cancer Podcast is here for you!