Managing Radiation Side Effects: Practical Tips

Radiation—a high-powered form of treatment that uses x-rays to shrink, damage, or kill cancer cells—is an important tool in pancreatic cancer treatment.

“Radiation for pancreatic cancer can be administered before or after surgery, in conjunction with chemotherapy, or as a standalone treatment,” says Ethan B. Ludmir, M.D., assistant professor in the Department of Gastrointestinal Radiation Oncology at The University of Texas MD Anderson Cancer Center in Houston.

While today’s treatments are more precise than ever, targeting cancerous tissues with great accuracy, nearby healthy cells can still be damaged. Knowing what to expect—and how to manage potential side effects—can help you maintain a sense of control during treatment.

How to Ease Common Side Effects

Side effects of radiation vary from patient to patient, even among those receiving the exact same dose and treatment. Some people experience very few symptoms, while others feel more fatigued or uncomfortable.

“Each patient’s experience with radiation therapy is unique,” Ludmir says. The severity of symptoms—and how long they last—depends on myriad factors, from the area of the body being treated to the overall health of the patient.

Among the most common side effects of radiation for pancreatic cancer patients:

• Fatigue: Fatigue is the most common side effect of radiation. Fortunately, fatigue from radiation is usually moderate; many patients are able to continue some or all of their usual activities during treatment.
  The fix: Rest! Instead of pushing yourself to complete all your daily tasks, listen to your body. Alternate periods of activity with periods of rest, eat plenty of nutrient-dense foods, and take steps to reduce stress. However, for some patients, the overwhelming sense of exhaustion may not improve even with rest.
• Nausea and poor appetite: Radiation can cause nausea, which in turn can affect appetite and nutrition. You might feel nauseated for a few hours after treatment and find it hard to eat enough to maintain your energy.
  The fix: Talk to your doctor about taking anti-nausea medications prior to treatment. Eat five to six small meals throughout the day rather than three large ones, even if you’re not hungry. And make sure to drink plenty of fluids. “Having good nutrition on board really helps patients tolerate treatment,” Ludmir explains. “We can also provide additional hydration through IV fluids when necessary.”
• Digestive troubles: Since radiation for pancreatic cancer inevitably affects abdominal structures, you may notice changes in digestion and nutrient absorption. Some pancreatic cancer patients experience changes in bowel movements, cramping, or excess gas.
  The fix: Over-the-counter simethicone (Gas-X) three or four times a day can help relieve bloating and gas, Ludmir says. He also suggests fasting for about three hours before radiation sessions. “Fasting helps make the stomach and duodenum smaller, allowing for more precise targeting of the pancreas,” he notes. Always confirm with your doctor before fasting to ensure it’s appropriate for you.

How to Support Your Body During Treatment

Radiation can be draining, that’s true. But there are proactive ways to help your body recover and reduce discomfort:

• Eat a balanced diet. Focus on easy-to-digest, nutrient-rich foods that are high in protein and calories. Smoothies, soups, nut butters, and eggs are often easier to tolerate when your appetite is low. A dietitian who specializes in cancer care can help you build a meal plan that supports healing and energy.
• Get plenty of rest. It’s normal to need more sleep during radiation. Establish a calming bedtime routine, and don’t hesitate to take short naps during the day if your body needs it.
• Consider medication. Many side effects can be managed with prescription or over-the-counter medications. Anti-nausea drugs, topical creams for skin irritation, and pain relievers can make a big difference.
• Get moving. When you’re dealing with fatigue, exercise may feel impossible. But gentle activity can actually improve energy levels. “Even light walking or gentle stretching can help you feel more energetic,” Ludmir adds.

Protecting Quality of Life During Treatment

Side effects of radiation can happen during or shortly after treatment, and they can last for weeks or even months after treatment ends. The good news: Long-term side effects are rare, and most patients can find relief with appropriate treatment.

“It’s impossible to predict which patients will experience side effects, so it’s important to discuss your symptoms with your healthcare team,” explains Ludmir. “Your doctor may choose to pause radiation therapy or even change your treatment plan, or prescribe specific medications to help alleviate some of the discomfort.”

Radiation doesn’t have to be overwhelming, and some patients don’t experience any side effects. By following practical strategies, getting sufficient nutrition and regular exercise, you can navigate treatments more seamlessly and safeguard your quality of life.