Many women live long, full lives after cancer. As survival improves, attention is increasingly turning to long-term health, including the heart. 

Some heart-related changes may occur during treatment, while others can develop gradually over time. These changes are often subtle and manageable, especially when identified early. Awareness allows women and their healthcare teams to support heart health alongside recovery and ageing. 

Heart-related effects after cancer treatment vary widely. Many women experience no lasting problems at all. 

In some cases, treatment may affect heart muscle strength, heart rhythm, blood pressure, or overall cardiovascular risk. These changes may not cause symptoms at first and can appear months or even years later, which is why awareness over time is important. 

Breast cancer is one of the most common cancers in women, and some treatments used in breast cancer care can place extra strain on the heart. 

This does not mean that breast cancer treatment should be feared or avoided. For most women, the benefits of treatment far outweigh any potential risks. However, it does mean that women who have had breast cancer may benefit from being mindful of heart health in the years following treatment. 

Heart-related effects after cancer treatment vary widely. Many women experience no lasting problems at all. 

In some cases, treatment may affect heart muscle strength, heart rhythm, blood pressure, or overall cardiovascular risk. These changes may not cause symptoms at first and can appear months or even years later, which is why awareness over time is important. 

Not all women need specialist follow-up. However, heart health review may be particularly helpful for women who: 

• received certain types of chemotherapy or targeted therapies 
• had radiotherapy to the chest area 
• already had heart disease or risk factors such as high blood pressure or diabetes 
• notice new or changing symptoms over time 

A general practitioner is often the right first point of contact and can guide whether further assessment is needed. 

Some symptoms are common during recovery and ageing, but certain changes deserve attention, especially if they are new, persistent, or worsening. 

These include shortness of breath, swelling in the legs or ankles, chest discomfort, unexplained fatigue, dizziness, or irregular heartbeats. Seeking review does not mean something serious is wrong, but it can provide reassurance or allow early support if needed. 

Supporting heart health after cancer follows the same principles as for all women. This includes managing blood pressure, cholesterol and diabetes, staying physically active in a way that feels achievable, eating well, and not smoking. 

Regular health checks and keeping a record of past cancer treatments can also be helpful, particularly when seeing new healthcare providers. 

There are reliable Australian resources that provide further information about cancer treatment and heart health. Links to these are provided below for women who want to explore this topic in more detail or share information with their healthcare team.