Does Radiation Therapy Cause Hair Loss?

Does Radiation Cause Hair Loss

Radiation therapy is a commonly used treatment for cancer that utilizes high-energy radiation to destroy cancer cells. While it can be highly effective, it is not without its side effects. One of the most well-known side effects is hair loss. If you or someone you know is undergoing radiation therapy, you may be wondering if radiation actually causes hair loss. In this article, we will delve into the science behind radiation therapy and hair loss, and explore ways to cope with this potential side effect.

Understanding Radiation Therapy

Radiation therapy involves the use of high-energy radiation to kill cancer cells. It can be delivered externally using a linear accelerator or internally by placing radioactive material near the cancer cells. Radiation therapy is often used in conjunction with other cancer treatments like chemotherapy and surgery.

Hair Loss as a Potential Side Effect of Radiation Therapy

Hair loss is a commonly experienced side effect of radiation therapy, especially in the treated area. The radiation damages the hair follicles, which can slow down or halt hair growth. Hair loss from radiation therapy typically begins a few weeks after starting treatment and may continue for several weeks after treatment ends. The severity of hair loss can vary depending on the dose and duration of radiation therapy, as well as the location of the treatment.

The Science Behind Hair Loss from Radiation Therapy

Radiation therapy damages cells by breaking up their DNA. Hair follicles are particularly vulnerable to radiation damage because they are constantly dividing. When the DNA in hair follicle cells is damaged, they are unable to divide properly, resulting in slowed or stopped hair growth.

Factors Affecting Hair Loss from Radiation Therapy

Hair loss from radiation therapy can vary from person to person, depending on several factors. The dose and duration of radiation therapy play a significant role, with higher doses and longer treatments increasing the likelihood of hair loss. The location of the radiation treatment also affects hair loss, especially in areas directly targeted by the radiation. Age, overall health, and other medical treatments can also influence the severity of hair loss.

Coping with Hair Loss from Radiation Therapy

Dealing with hair loss can be challenging, but there are ways to manage it and maintain your confidence. Planning ahead by choosing a wig or other head covering can help you feel more comfortable and resilient during the changes in your appearance. Taking care of your scalp and remaining hair during and after radiation therapy is important to prevent irritation and infection. Seeking emotional support and connecting with others who have experienced hair loss can provide valuable resources and comfort during this time.


In conclusion, radiation therapy can indeed cause hair loss as a side effect. However, it is important to remember that hair loss is temporary, and hair usually grows back after treatment. If you are undergoing radiation therapy and experiencing hair loss, there are coping mechanisms available to you. Whether it’s choosing a wig, taking care of your scalp, or seeking emotional support, remember that you are not alone in this journey. At Hair Style, we strive to support individuals undergoing cancer treatment by providing a range of products and services to help you feel confident and beautiful during this challenging time.