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Heart and bone health after cancer treatment

Some cancer treatments affect the heart and thin the bones years later. Who is at risk, what monitoring exists, and the changes that make the largest difference.

4 min read · Part of Long-Term Effects

Written by The LifeAfterward editorial team from the sources listed at the end of this page.

Not individually reviewed by a clinician. This page is written from published clinical guidance, listed in full at the end, and is general information rather than medical advice — your own team knows your case. See our editorial standards.

Last checked against its sources · Last updated · Next check due

In short

  • Anthracyclines, HER2-targeted therapy and chest radiotherapy can affect heart function, sometimes years later.
  • Aromatase inhibitors, androgen deprivation therapy, early menopause and steroids all accelerate bone loss.
  • Both are monitorable and largely manageable — and in both cases the general cardiovascular and bone advice does most of the work.
  • For many people, the biggest long-term health risk after cancer is cardiovascular disease rather than the cancer itself.

What this means

This is the least dramatic and most consequential part of survivorship. Blood pressure, cholesterol, weight, activity, smoking and bone density are unglamorous, but they are where the years are won or lost after successful cancer treatment. Knowing which specific monitoring applies to you turns a vague worry into two appointments a year.

The heart

Cardio-oncology — the overlap between cancer treatment and heart health — is now a recognised specialty, and European guidance sets out risk stratification and monitoring for people treated with cardiotoxic therapies.

  • Anthracyclines can weaken the heart muscle in a way related to cumulative dose. Effects can appear during treatment or years later.
  • HER2-targeted drugs such as trastuzumab can reduce heart function, usually reversibly, and are monitored during treatment.
  • Chest radiotherapy can affect the heart muscle, valves and coronary arteries over the long term.
  • Some newer therapies affect blood pressure, rhythm or clotting — ask specifically about what you had.
  • Androgen deprivation therapy is associated with metabolic changes that raise cardiovascular risk.

What to ask for

  • Whether you need baseline and follow-up echocardiograms, and how often.
  • Blood pressure, cholesterol and glucose checks at least annually.
  • A cardiology or cardio-oncology referral if you develop breathlessness, swelling, palpitations or reduced exercise tolerance.
  • Clear advice on exercise, which is beneficial rather than dangerous for almost everyone in this group.

The bones

Several common treatments accelerate bone loss: aromatase inhibitors in breast cancer, androgen deprivation therapy in prostate cancer, chemotherapy-induced early menopause, surgical removal of ovaries, long-term steroids, and radiotherapy to the pelvis.

  • A DXA scan measures bone density and is the usual starting point. Ask whether you need one and how often it should be repeated.
  • Calcium and vitamin D intake should be adequate — your team can advise on whether supplements are needed for you.
  • Weight-bearing and resistance exercise is one of the few things that maintains bone. Walking, stairs, and progressive strength work all count.
  • Bone-protecting medication (bisphosphonates or denosumab) is used where risk is high, and in some cancers is also part of treatment itself.
  • Stopping smoking and keeping alcohol low both matter for bone as well as heart.
  • Falls prevention matters as much as density — see the balance advice in neuropathy.

The general health that does most of the work

  1. Do not smoke. Nothing else on this page comes close in impact.
  2. Move most days, with a mix of aerobic and resistance work — see exercise after cancer.
  3. Keep alcohol low; the evidence for cancer risk is dose-related and the heart and bone effects add to it.
  4. Get blood pressure, cholesterol and glucose checked annually, and treat them if raised.
  5. Eat predominantly plants, fibre and adequate protein — see eating well after cancer.
  6. Keep up vaccinations and screening.

What to ask your healthcare team

  • Given my treatment, do I need heart monitoring — and how often?
  • Do I need a DXA bone density scan, and when should it be repeated?
  • Do I need calcium, vitamin D or bone-protecting medication?
  • What are my current blood pressure, cholesterol and glucose, and who monitors them?
  • Is there any activity I should avoid, or any I should specifically do?
  • Should my family doctor be doing an annual review of these?

Save questions to My Journey so you have them in the room, or use a ready-made list.

When to seek medical advice

Contact your healthcare team if you have:

  • Breathlessness on exertion or when lying flat, or waking at night breathless.
  • Swollen ankles, palpitations, or reduced exercise tolerance.
  • A fracture after a minor fall, loss of height, or new persistent back pain.
  • Any new chest discomfort on exertion.

Get emergency help the same day if you have:

  • Chest pain or tightness, especially with sweating, nausea or pain into the arm or jaw — call emergency services.
  • Severe sudden breathlessness, fainting, or a fast irregular heartbeat.
  • A fall with suspected fracture, or back pain with leg weakness or bladder or bowel changes.

If you are worried and unsure, contact your team anyway — they would far rather hear from you unnecessarily than late. What to do in an emergency.

Common questions

Do I need heart checks after chemotherapy?

It depends what you had. Anthracyclines, HER2-targeted drugs and chest radiotherapy are associated with heart effects, and guidance recommends risk-based monitoring — often an echocardiogram at intervals. Ask your team which category you are in, and have blood pressure, cholesterol and glucose checked annually regardless.

Can cancer treatment cause osteoporosis?

Yes. Aromatase inhibitors, androgen deprivation therapy, treatment-induced early menopause, removal of the ovaries and long-term steroids all accelerate bone loss. A DXA scan measures it, and weight-bearing exercise, adequate calcium and vitamin D, and bone-protecting medication where indicated all help.

Sources

This page was written from the guidance below and checked against it on . Links are re-checked at each review — see our editorial standards.

  1. European Society of Cardiology (2022). Guidelines on cardio-oncology
  2. National Cancer Institute (US). Late effects of cancer treatment
  3. ASCO (Cancer.Net). Survivorship
  4. Medicine & Science in Sports & Exercise (2019). Exercise Guidelines for Cancer Survivors: Consensus Statement from International Multidisciplinary Roundtable (Campbell et al.)
  5. National Comprehensive Cancer Network. NCCN Guidelines for Patients
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