Medical Oncologist
CION Cancer Clinics
Fertility preservation before colon cancer treatment: what to ask and when | CION Cancer Clinics
Colon cancer treatment can affect your chances of having children, mostly through chemotherapy rather than the operation. Sperm banking, egg freezing and embryo freezing can protect that chance, but only if they happen before chemotherapy begins. This page explains which treatments carry which risk, what each option involves, and how to fit it in without harming your cancer plan. At CION Cancer Clinics in Hyderabad, our oncologists explain colon cancer in plain words and plan care around you and your family.
NG
Medically reviewed by Dr. Naresh GunduConsultant Medical Oncologist · MBBS, DNB (Internal Medicine), DM (Medical Oncology, AIIMS) · last reviewed October 2026, next review due October 2027
17+specialists on panel
15,000+patients treated
35+centres across Telangana & AP
4.8★ / 800+Google rating
On this page
- Can colon cancer treatment affect your fertility?
- Which treatments carry which fertility risk?
- What can be done to protect fertility before treatment?
- How do you arrange this before chemotherapy starts?
- What do families get wrong about fertility and cancer?
- What this page cannot tell you
- Common questions about fertility before colon cancer treatment
The short answer
Can colon cancer treatment affect your fertility?
It can, and the risk depends on which treatment you need. The operation on its own rarely ends fertility. Chemotherapy, some targeted medicines and any radiation to the pelvis can lower it, sometimes for good. The time to ask is before your first dose of chemotherapy, and ideally before surgery, because the options shrink once treatment has begun.
What surgery can do
Removing part of the colon does not touch the ovaries, womb or testes. In women, scar tissue after abdominal surgery can sometimes form around the tubes and make conceiving harder. In men, an operation low in the pelvis can affect the nerves for erection and ejaculation, though this is far more common after rectal surgery than colon surgery.
What medicines can do
The chemotherapy usually used for colon cancer is considered gentler on fertility than some other cancer drugs, but it can still reduce sperm and the number of eggs left in the ovaries. The effect is larger for women closer to forty. The fertility and treatment page covers life during and after treatment.
Nobody can tell you in advance exactly how your body will respond. That uncertainty is the reason to preserve first.Side by side
Which treatments carry which fertility risk?
Treatment
What it can do
Colon surgery alone
Usually little direct effect; scar tissue can matter for some women
Chemotherapy after surgery
Can lower sperm and egg numbers; sperm often recovers with time
Bevacizumab and other targeted medicines
Bevacizumab can affect the ovaries; for others less is known
Surgery for spread inside the abdomen
The ovaries are sometimes removed because cancer can spread to them
Radiation to the pelvis
Rare in colon cancer, but it can damage ovaries and testes
Not sure whether this applies to you?
Ask an oncologistYour options
What can be done to protect fertility before treatment?
All of these are done at a fertility clinic, after a referral from your oncologist. CION's oncologists make the referral and plan the timing around your treatment.
Sperm banking
You give semen samples at a fertility clinic and they are frozen for later use. It is quick, needs no medicines and can usually be done before the first dose of chemotherapy. If a sample is not possible, sperm can sometimes be collected from the testis in a small procedure.
Egg freezing
Hormone injections stimulate the ovaries for about two weeks, then eggs are collected under sedation and frozen. It does not need a partner, which suits unmarried women.
Colon cancer is not usually driven by hormones, so the injections are generally not a worry for the cancer itself.Embryo freezing
The same egg collection, but the eggs are fertilised with your husband's sperm before freezing. Frozen embryos tend to survive thawing well. Both partners must consent to their later use.
Less common options
A strip of ovary can be frozen, sometimes during another operation, though fewer clinics offer it. Monthly injections that rest the ovaries during chemotherapy are sometimes added. They are not a replacement for freezing.
Fitting it in
How do you arrange this before chemotherapy starts?
Raise it at your first visit
Say clearly that you may want children, even if marriage feels far away. You can ask to speak to the doctor without your parents in the room.
A fast referral
Your oncologist writes to a fertility specialist and marks it as urgent. Fertility clinics usually try to see cancer patients quickly because they know the window is short.
Simple tests
Men have a semen test. Women have a blood test and an ultrasound to check how many eggs the ovaries hold. These guide which option is realistic.
The preservation itself
For many people this happens in the gap between surgery and chemotherapy. If chemotherapy comes first, it happens before the first dose. Your oncologist and the fertility specialist agree on a safe delay.
Contraception during treatment
Chemotherapy can harm a developing baby. Both men and women need reliable contraception during treatment and for a period afterwards that your oncologist will specify.
Leave a number, we will call you
One field. No form to fill in, and no charge for the call.
Commonly believed
What do families get wrong about fertility and cancer?
"Thinking about children now is selfish. Treatment comes first."
Both can happen. Sperm banking takes days, and egg freezing can usually fit in without harming your treatment plan. Asking is part of planning your life after cancer.
"Chemotherapy always makes you infertile."
It does not. Many people treated for colon cancer go on to have children without help. Preservation is a backup for the people whose fertility does not recover.
"If my periods stop during chemotherapy, I cannot get pregnant."
Periods often become irregular or stop, and an egg can still be released. Pregnancy during chemotherapy is possible and risky, so contraception is still needed.
"A pregnancy after cancer will bring the cancer back."
There is no good evidence that pregnancy makes colon cancer return, although the research is limited. The usual advice is to wait until treatment is finished and your oncologist agrees the timing.
Being straight with you
What this page cannot tell you
It cannot tell you how much your own fertility will be affected. That depends on your age, your egg reserve or sperm count before treatment, the medicines you receive and how long you take them. A fertility specialist can estimate it after simple tests. Nobody can promise that frozen eggs, sperm or embryos will lead to a baby.
It cannot plan your chemotherapy
Whether you need chemotherapy at all depends on your stage, and the page on whether you need chemotherapy after surgery explains that decision. If you carry Lynch syndrome, surgery to lower womb and ovary risk is often advised once your family is complete, so the fertility plan and the genetics plan should be made together.
Who this does not apply to
If your family is complete and you are sure, or you are past the menopause, preservation is not needed. If you need only surgery for an early cancer, the risk is low and many people decide against it. If your cancer is in the rectum, pelvic radiation changes the picture; see the rectal cancer pages.
Fertility clinic fees are quoted separately and vary. Ask for a written estimate and check with your insurer before assuming any cover.Questions we are asked
Common questions about fertility before colon cancer treatment
When is the right time to ask about fertility?
At your first consultation, before any chemotherapy is given. Once the first dose has gone in, eggs and sperm collected afterwards may already be affected. If you are already on treatment and did not ask, raise it now, because some options may still be open.
Will freezing eggs delay my cancer treatment?
Usually only slightly. Stimulation can start at any point in the menstrual cycle, so the whole process fits in about two weeks. Your oncologist decides whether that delay is safe for you, and it often falls in the recovery gap after surgery anyway.
Does CION do sperm banking or egg freezing?
No. These are done at registered fertility clinics. CION's oncologists raise the question, make the referral, and plan chemotherapy dates around the fertility clinic's timetable so the two teams are not working against each other.
I am not married. Can I still freeze my eggs?
Usually yes. Egg freezing does not need a partner, and the eggs remain yours to use later. Embryo freezing needs a husband's sperm, so unmarried women usually freeze eggs. The fertility clinic will explain the consent and storage rules that apply.
How long can frozen eggs or sperm be stored?
Frozen sperm, eggs and embryos can be stored for many years without losing quality over time. Clinics charge a storage fee that is renewed regularly. Ask the clinic about its storage rules and what happens if you move city or change your mind.
Is chemotherapy after colon surgery very damaging to fertility?
It is gentler than some other cancer drugs, and it can still affect fertility. Sperm counts often fall and may recover over time. In women, egg reserve can drop, more so nearer forty. The colorectal chemotherapy page covers other side effects.
When can we try for a baby after treatment?
Your oncologist will advise a waiting period after the last dose of chemotherapy, and the length differs between medicines. Many couples also wait until the first follow-up scans are clear. Talk it through with your oncologist before you stop contraception.
Is fertility preservation covered by insurance or schemes?
Often not, and you should never assume it is. Ask the fertility clinic for a written estimate, then ask your insurer or the scheme desk at the hospital in writing. The CION helpline can help you work out who to ask.
Your Specialists
Meet CION's colon cancer specialists. Bring your colonoscopy, scan or biopsy report.
Our surgical and medical oncologists plan colon cancer care together: which operation, whether chemotherapy is needed, and the follow-up that comes after.
Medical Oncologist
Dr. C. Raghavendra Reddy
MBBS(Gold Medal), DNB(General Medicine), DM(Medical Oncology)(Gold Medal)
Medical Oncologist
Dr. Bharati Devi Gorantla
MBBS, MD(General Medicine), DM(Medical Oncology)(Adyar,Chennai), ECMO, MRCP SCE(UK)
Medical Oncologist
Dr. Owais Mohammed
MBBS, MD (General Medicine), DrNB (Medical Oncology), ECMO, MRCP SCE (Medical Oncology) (UK)
Medical Oncologist
Medical Oncologist
Surgical Oncologist
Dr. Muralidhar Muddusetty
MBBS (AIIMS), MS (Surgery) (AIIMS), DNB (Surgical Oncology), MRCS (Edinburgh)
Surgical Oncologist
Want a specific doctor for your case? Mention them when booking.
Book Free ConsultationBook an appointment with our specialist
Share your name and number — we'll call you back within 30 minutes to schedule your consultation.
Sources
- National Cancer Institute — Chemotherapy to Treat Cancer
- American Cancer Society — Colorectal Cancer Chemotherapy
- Macmillan Cancer Support — Bowel cancer (including rectal cancer and colon cancer)
- American Cancer Society — Living as a Colorectal Cancer Survivor
This page is general information, not a prescription. Do not change or stop any treatment based on what you read here. If anything is worrying you, contact your own treating team — or call our helpline and we will help you reach the right specialist.
Keep reading
Related pages
Fertility and colon cancer treatmentFertility, contraception and pregnancy during and after treatmentDo you need chemotherapy after surgery?Whether the main fertility risk applies to you at allColon cancer in young adultsThe wider picture of a young diagnosisMarriage conversations after young-onset colon cancerTalking to a partner or family about the future
Talk to us
Want to talk about fertility before treatment starts?
Tell us your treatment plan and whether you hope to have children. We will help you raise it with your oncologist and arrange a timely fertility referral. One helpline serves every CION centre.