Answer Summary

Members responded to concerns about rapid 10-pound weight gain in two days after starting chemo and radiation, with the strong consensus being... Read more

Members responded to concerns about rapid 10-pound weight gain in two days after starting chemo and radiation, with the strong consensus being to contact the doctor immediately to rule out serious fluid retention or other complications. Several members shared that steroid medications given during treatment commonly cause weight gain, often showing up first in the face, and that gradual weight gain of 15 to 25 pounds over the course of treatment is not uncommon, though 10 pounds in just two days warrants medical attention. A recurring theme was balancing the reassurance that some weight gain is a normal side effect with the clear message that such rapid gain needs professional evaluation to ensure it is not something more serious.