For colon and rectal cancer, doctors often recommend adjuvant chemotherapy after surgery to lower the risk of recurrence from microscopic cancer cells that may remain even once the visible tumor is removed. This is especially common in stage 3 disease, where nearby lymph nodes are involved, because evidence shows that adding chemotherapy after surgery reduces recurrence compared with surgery alone.
Common adjuvant regimens for stage 3 colorectal cancer include oxaliplatin-based combinations such as FOLFOX, or CAPOX/XELOX, which pairs an oral drug with oxaliplatin. Depending on age, overall fitness, other health conditions, and the tumor's risk features, the plan may instead use an oral drug alone (capecitabine) without oxaliplatin, or shorten the treatment duration. There is rarely a single right answer — it is a process of weighing the expected benefit against the burden a person must tolerate.
Known side effects include peripheral nerve symptoms such as tingling or cold sensitivity in the hands and feet (especially with oxaliplatin, worsened by touching cold things), nausea and reduced appetite, diarrhea, fatigue, and a higher infection risk from low white blood cell counts. Most of these can be managed with dose adjustments and supportive medications and tend to ease after treatment ends, although nerve tingling can linger for some people. Knowing what to expect helps reduce vague fear.
When an older person hesitates and says they would rather "just live as they are," there are real reasons behind it — concern about strength and stamina, fear of side effects, and a wish to protect remaining quality of life. The key point is that adjuvant chemotherapy is a choice, not an obligation. Age alone neither rules it out nor makes it mandatory; the decision is best made by considering both physical function and the person's own values.
As a family member, the most helpful thing is not to push the decision, but to create a space to hear accurate information together. At the appointment, asking the care team specifically how much the recurrence risk differs with versus without chemotherapy, and whether there is a tolerable option for this person (an oral drug, a shorter course), can replace uncertainty with clarity. A gift need not be grand: easy-to-digest snacks, warm socks or a soft lap blanket (helpful for cold-sensitive nerve symptoms), or a handwritten note that simply says "I am here" often mean the most.
This article is for general information only and does not replace the diagnosis and care of an individual patient. Decisions about whether and how to receive chemotherapy should always be made in full discussion with your medical team.