Updated on October 14, 2025.
If you’ve received a breast cancer diagnosis, you probably have quite a few choices and changes to make. So, how can you build up your health, strengthen your resolve to manage your treatment of the disease, and help prevent it from coming back? Here are some key steps to take.
Manage lifestyle factors
There are several crucial lifestyle factors that affect people who have been diagnosed with breast cancer, including obesity, inactivity, and poor diet. By addressing these, you may help to improve your cancer survival and overall longevity. While more research needs to be done to understand how these factors influence breast cancer, research has shown promising trends.
What is the role of obesity?
Having increased amounts of body fat raises levels of estrogen, insulin, and inflammation, all of which may promote the growth of cancer. Carrying excess weight is not only associated with a higher chance of developing cancer, but also higher rates of recurrence (which is when a previous cancer returns).
What is the role of physical activity?
Exercising regularly has been shown to lead to better outcomes for breast cancer patients. Research suggests that people who are more physically active (for example, walking 3 to 5 hours per week) have a significantly lower risk of breast cancer recurrence and death from breast cancer or from any other cause, compared to people who exercise less.
What is the role of diet?
While there’s no one food that’s been shown to cause or prevent cancer, there are some you may want to consider minimizing or increasing in your diet.
To start, it makes sense to eat less saturated fat. There’s evidence that foods high in saturated fats (such as red and processed meats and fried foods) may increase cancer risk. Additionally, some research suggests that a diet high in unhealthy fat (like saturated fat) may be a risk factor for breast cancer survival, possibly because of its role in obesity.
Meanwhile, it’s a good move to eat more foods high in antioxidants and fiber and low in saturated fats, including fruits, vegetables, beans, and whole grains. Emphasize healthy oils like olive, canola, and peanut oils. For protein, focus on nuts, fish, and beans.
What role does alcohol play?
Alcohol is a carcinogen, which means it’s known to cause cancer. There is a clear link between alcohol consumption and breast cancer risk—and the risk goes up with each daily drink. The general recommendation for women is to have no more than one alcoholic drink per day, but it’s best not to drink at all if you have been diagnosed with breast cancer. If you’re currently taking chemotherapy, alcohol may interfere with your medication.
What about the risk of smoking?
The links between breast cancer and smoking or not as clear as those between breast cancer and alcohol, but evidence suggests there is a risk of lighting up. Some research has suggested that former smokers with breast cancer had an increased risk of recurrence, and that risk grew with the amount they smoked.
Should I take supplements?
There’s no evidence that dietary supplements can lower the risk of cancer recurring or improve survival rates. Some supplements may even harm cancer patients by providing an overload of certain nutrients or interacting with medications.
Speak with your healthcare provider to make sure you are getting the nutrients you need. Breast cancer patients may be at higher risk of osteoporosis because of the effects of chemotherapy on bone health, so it’s an especially good idea to make sure you’re getting your daily dose of calcium and vitamin D.
Improving lifestyle, improving survival
It’s important to be realistic when adjusting your lifestyle, and to avoid making too many changes too quickly. That said, when confronted with a major event like a cancer diagnosis, small changes may feel frustrating or even futile.
So, keep this in mind: As treatment for breast cancer improves, even little lifestyle tweaks can support treatments, helping you live a healthy life after diagnosis.
