Yes, chemotherapy can affect your personality through "chemo brain" (cognitive fog, confusion, word-finding difficulty) and emotional impacts like anxiety, depression, irritability, and mood swings, stemming from the drugs affecting the brain, stress from the diagnosis, physical fatigue, and the overwhelming experience of cancer itself, sometimes leading to changes in focus, memory, or emotional regulation. These shifts can range from subtle cognitive changes to more noticeable behavioral and emotional alterations, impacting how you think, feel, and interact.
Depression and anxiety in cancer survivors
Lingering feelings of sadness and anger can interfere with your daily life. For many people, these feelings become less intense with time. But for others, these feelings can develop into depression. Tell your provider about your feelings.
Chemo brain
Emotional and mental health challenges such as depression, anxiety, stress, and having trouble sleeping can add to that foggy feeling.
The cancer is actively growing despite the treatment. Blood tests that track proteins made by cancer cells show a consistent rise. The overall cancer activity in the body is increasing. Symptoms like pain, fatigue, or breathing issues are getting worse instead of better.
Fatigue often tends to get worse with each progressive round of chemo. This means that if you feel weak after your first chemo session, you'll likely feel weaker after the second. Still, there isn't a set timeline for when chemotherapy side effects start.
Signs of improvement can show up early in chemotherapy. These signs include tumor shrinkage on scans, lowered tumor marker levels in blood tests, and better blood counts. Healthline says these signs help doctors see if treatment is working.
Drugs like doxorubicin and paclitaxel are among the most aggressive chemotherapy treatments. These treatments come with significant side effects. Liv Hospital offers patient-centered care for those undergoing aggressive chemotherapy.
Patients who died under palliative care service had longer median survival (120 days) after last chemotherapy as compared to other patients [120 and 43 days respectively, P < 0.001, Figure 2].
Complete response - all of the cancer or tumor disappears; there is no evidence of disease. A tumor marker (if applicable) may fall within the normal range. Partial response - the cancer has shrunk by a percentage but disease remains. A tumor marker (if applicable) may have fallen but evidence of disease remains.
During and after cancer treatment with chemotherapy, up to 75 percent of people experience thinking and memory problems known as “chemo brain.” [2] Chemo brain can also cause anger — a phenomenon sometimes called “chemo rage.”
While some studies suggest a link between chemotherapy and mild cognitive impairment, which is considered a precursor to dementia, the evidence is somewhat limited. Some data suggests chemotherapy may not increase the risk of developing dementia.
Staying mentally and emotionally healthy during cancer treatment
You might have physical changes like hair loss, skin changes or new scars, ostomies, weight changes, or loss of limbs. Cancer and treatment might also cause changes to your sex organs, sexual health, fertility, or mental health. Some of the changes may be temporary, while others are permanent.
The 62-day rule for cancer, primarily in the UK's NHS system, is a key waiting time target: patients who receive an urgent referral for suspected cancer should begin their first cancer treatment within 62 days from the date the hospital gets that referral. It's part of broader standards that also include a 28-day "Faster Diagnosis" goal (diagnosis or ruling out cancer within 28 days of urgent referral) and a 31-day "Decision to Treat" standard (treatment within 31 days of the agreed-upon plan).
It is not uncommon for cancer patients to experience personality changes during their journey. These changes can be attributed to a combination of factors, including the psychological impact of the diagnosis, emotional distress, physical symptoms, and the side effects of treatment.
Examples of cancers where chemotherapy works very well are testicular cancer and Hodgkin lymphoma. With some cancers, chemotherapy can't cure the cancer on its own. But it can help in combination with other types of treatment. For example, many people with breast or bowel cancer have chemotherapy after surgery.
The oncologist may plan to administer chemotherapy in cycles of 1–5 days each, with 2 days off, for a total of 7 days (7-day rule chemotherapy), or continuously for 1–5 days per session and rest for 3–4 weeks to allow the white blood cells and the body to recover and be ready for the next session.
Tests might include blood tests. Scans might include MRI, CT or PET scans. You cannot tell if chemotherapy is working based on its side effects.
How long does chemo stay in your body? Chemotherapy stays in your body for two to three days (48 to 72 hours). Some drugs can take up a week for your body to break them down. Once the kidneys and liver break down the chemo, your body excretes the remnants through urine, sweat, stool and vaginal fluid (in women).
Treatment side effects outweigh the benefits
For instance, chemotherapy can shrink tumor size but commonly cause side effects, such as hair loss, anemia, and bleeding. If these effects significantly diminish a patient's quality of life, they may consider discontinuing the treatment.
Why is it called “The Red Devil?” Take one look at it, and you'll understand why — in its liquid form, doxorubicin is a bright red. We're talking Kool-Aid, too-red-to-be-real red.
The side effects from chemotherapy tend to be the worst the day after it's administered. “If you're on a strong chemo regimen, usually the day after is when you'll experience the worst symptoms,” says Iheme. “By worst, I mean you'll experience the most fatigue, weakness and nausea.
Take naps early in the day so you do not disturb your sleep pattern at night. Consider exercising every day or several times a week. Good forms of exercise include swimming, walking and yoga. Contact the Patient and Family Cancer Support Center for information on free exercise classes.