Lifestyle Habits: A Powerful Predictor for Health Outcomes

For childhood cancer survivors, the battle doesn’t end with remission. They often face decades of elevated risks for chronic health conditions (CHCs) stemming from their life-saving treatments.

However, new research suggests that maintaining a healthy weight and staying physically active might do more to protect these survivors from future ailments than the cancer treatments themselves.

Nature Communications Study Highlights Modifiable Factors

A recent Nature Communications study, drawing data from the Childhood Cancer Survivor Study (CCSS), assessed the profound impact of modifiable lifestyle factors.

This longitudinal study, involving 18,664 survivors from 31 North American institutions, compared these lifestyle risks to those associated with chemotherapy and radiotherapy.

We’ve long understood that childhood cancer survival rates are impressive, exceeding 85% in the United States, but the long-term health challenges have remained a significant concern.

Unhealthy Habits: A Clear Link to Worse Outcomes

The researchers found a stark correlation: an unhealthy lifestyle was linked to substantially worse long-term health outcomes.

Survivors with unhealthy habits were 50% more likely to develop high blood pressure and nearly three times as likely to develop diabetes compared to those who maintained healthy habits.

We also saw a 30% to 80% higher risk for conditions like abnormal cholesterol levels, heart attack, heart failure, and joint replacement.

Emotional distress was not spared, with anxiety and depression up to 80% more common in those with less healthy lifestyles.

Furthermore, unhealthy lifestyles doubled the likelihood of poor physical quality of life and increased the risk of poor mental quality of life by 80%.

Key Drivers: Weight and Activity

Overweight, obesity, and physical inactivity emerged as the strongest drivers of many long-term health problems.

Excess body weight was particularly influential, accounting for a substantial share of diabetes cases and contributing to heart disease, high blood pressure, and joint replacement.

Low physical activity, meanwhile, was most strongly linked to heart failure, respiratory disease, and poorer quality of life.

Other factors played targeted roles: smoking was associated with stroke, osteoporosis, anxiety, and depression, while heavy alcohol consumption linked to stroke and anxiety.

Lifestyle’s Edge Over Treatment History

Perhaps the most compelling finding was that unhealthy lifestyle habits accounted for a larger share of several chronic health conditions—including diabetes, high blood pressure, joint replacement, anxiety, depression, and reduced quality of life—than previous chemotherapy or radiotherapy exposures.

This suggests that modifiable behaviors play a more significant role in shaping long-term health after childhood cancer than previously understood.

The potential benefit of a healthy lifestyle appeared even greater among childhood cancer survivors than among their siblings, indicating survivors may have more to gain from lifestyle improvements.

Healthy Lifestyle Lowers Mortality Risk After Cancer Diagnosis

Adding to this body of evidence, a study led by Newcastle University, U.K., and published in Cancer, provides further encouragement for simple lifestyle changes.

This research shows that adhering to five key lifestyle recommendations significantly improves survival after a cancer diagnosis.

These recommendations, developed by the World Cancer Research Fund (WCRF) and the American Institute for Cancer Research (AICR) in 2018, include:

• Be a healthy weight
• Be physically active
• Eat wholegrains, vegetables, fruit and beans
• Limit red and processed meat
• Limit alcohol consumption

Professor John Mathers, Emeritus Professor of Human Nutrition at Newcastle University, highlighted the significance: “For the first time, we have shown that higher adherence to the WCRF/AICR 2018 Recommendations may reduce the risk of mortality for people diagnosed with cancer in a UK cohort.”

The study of 28,550 individuals found that each 1-point increment in adherence score was associated with an 8% lower chance of dying from any cause.

Overall, those in the highest third of the study population for adherence had a 16% lower chance of all-cause mortality, even for multiple cancer types like breast and liver cancers.

Dr. Fiona Malcomson, a co-author from Newcastle University, echoed this, stating, “The take-home message is that the 2018 WCRF/AICR Cancer Prevention Recommendations apply to cancer survivors too.”

A Major Prevention Opportunity

These findings collectively indicate that addressing modifiable lifestyle factors offers a promising opportunity to help reduce chronic health conditions and improve the long-term well-being of cancer survivors.

While the Nature Communications study was observational and cannot establish cause-and-effect, the evidence strongly suggests the potential benefits of healthy lifestyle behaviors.

We believe that by prioritizing healthy behaviors and supporting survivors with targeted interventions, healthcare providers and communities can help this population achieve better health outcomes and an enhanced quality of life.