The short answer
A geriatric assessment is a set of checks that measures an older adult's health beyond their age, such as strength, memory, nutrition, and support at home. In a clinical trial, using it to guide treatment led to fewer serious side effects and fewer falls. Many groups suggest one before starting cancer treatment at age 65 and up.
A geriatric assessment measures health areas that routine cancer care often misses.
It looks at things like physical function, memory, nutrition, medicines, and support.
In a trial, assessment-guided care led to fewer serious side effects and fewer falls.
Many professional groups suggest an assessment before treatment for adults over 65.
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The full explanation.
The simple version
A geriatric assessment is a way for your cancer team to understand your health beyond your age. It gathers information about the everyday things that shape how well someone handles treatment, such as strength, balance, memory, nutrition, medicines, and support at home.
Your age on paper does not tell the whole story. This tool helps fill in the rest so treatment can be matched to your real health.
A geriatric assessment measures the health details that age alone hides.
What it looks at
A geriatric assessment collects information that routine cancer care often does not capture. It can include areas such as:
- Physical function and how well you manage daily tasks
- Other health conditions you live with
- Physical performance, such as walking and balance
- Thinking and memory
- Nutrition
- The medicines you take
- Your social support
Together, these give a fuller picture of your health.
It covers the parts of health that most affect treatment and recovery.
Why it helps
Doctors use the assessment to gauge a person's health, not just their birthday. As one oncologist put it, it can help show whether a 70-year-old is, in health terms, more like an average 45-year-old or closer to an average 90-year-old. That helps predict how someone may handle treatment.
The evidence is strong. In a nationwide clinical trial of adults aged 70 and older with advanced cancer, people whose care was guided by a geriatric assessment had fewer serious side effects. About 70% of the usual-care group had one or more serious side effects, compared with about 50% of the guided group. The guided group also had fewer falls at home, 12% versus 21%.
Importantly, this did not mean weaker treatment. Even though guided care sometimes used lower or single-drug doses, there was no difference in how long patients lived between the two groups.
Guided care lowered harm without shortening lives in the trial.
What it can change
When a team uses the results, they can adjust care in several ways. They might start with a lower dose, use one drug instead of a combination, or add more supportive care, such as referrals to a social worker or nutritionist.
The assessment can also flag medicines that add to side effects. Some drugs for blood pressure, diabetes, or mood can worsen dizziness or dehydration during treatment, which raises the risk of falls. Adjusting these can help.
Results lead to real changes that make treatment safer.
What to expect
A full assessment takes about 20 minutes on average. Often, you and your family can fill out part of it at home or in the waiting room, and your team completes the rest during a visit.
Many professional groups now suggest a geriatric assessment for every adult over 65 who is about to start cancer treatment. If your team does not offer one, you can ask about it, or ask whether a geriatrician is available in your area. It is a fair question, and it can shape your care for the better.
Asking about an assessment is a simple way to help plan safer care.
Words to know
Tap any term to see what it means.
Common questions
What is a geriatric assessment?
It is a set of survey and health checks that gather information about an older adult's overall health. It looks at areas like physical function, other illnesses, nutrition, physical performance, thinking and memory, and social support that routine cancer care may not capture.
Why would my team suggest one?
It helps the team understand your health beyond your age. Two people the same age can be very different. The assessment can show whether someone is, in health terms, closer to a much younger or much older person, which helps predict how they may handle treatment.
What did research find about it?
In a nationwide clinical trial of adults 70 and older with advanced cancer, patients whose care was guided by a geriatric assessment had fewer serious side effects and were less likely to have falls at home. About 70% of the usual-care group had a serious side effect, compared with about 50% of the guided group.
Does an assessment mean less effective treatment?
Not necessarily. In the trial, guided care sometimes meant lower or single-drug doses, yet there was no difference in how long patients lived between the two groups. The aim is to reduce harm while still treating the cancer.
How long does it take?
A full assessment takes about 20 minutes on average, and parts can often be filled out by patients and families at home or in the waiting room. Groups are working on shorter, simpler versions.
Who can do a geriatric assessment?
It may be done through your cancer team, or by a geriatrician, a doctor who specializes in older adults' health, if one is available in your area. These visits can sometimes be scheduled separately from an oncology appointment.
Questions to ask your doctor
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Last updated: 2026-07-14Next planned review: 2028-07-14
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How this page was created
Cancer Explained does not originate medical claims. Every page restates guidance already published by the National Cancer Institute, the CDC, the USPSTF and the FDA, in plain language, with the source cited so you can check the original yourself. AI does the translating and organizing; automated checks test claims, citations, clarity and safety before anything publishes. We do not employ clinicians and do not intend to — our work is translation and navigation, not clinical judgment. Nothing here is personal medical advice, and no page can account for your particular situation.
Editorial status: Source checked — This page was written with AI assistance and checked line by line against the sources listed on it. That confirms the sources support what the page says. It is not a medical review, and it does not confirm the page is complete or right for your situation.
Human medical review: not completed. Pages here are not signed off by a clinician before they publish. That is not an oversight we are quietly working around: we restate published guidance and cite it, so the authority belongs to the source rather than to us, and every page names where its claims come from — you can verify us instead of trusting us. Where a volunteer clinician has reviewed a page, their name and credentials appear on it; where no name appears, no clinician has checked it. We are glad to have reviewers and are recruiting them, and we do not hold pages back waiting for one. Use this site to understand your situation and to ask better questions of the people treating you.
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