Many people think lifestyle habits matter mainly for preventing disease. However, a new study suggests that the choices people make years before a cancer diagnosis may continue to influence their health long afterward.
Researchers have found that people who follow several healthy lifestyle habits appear to have a better chance of surviving after being diagnosed with cancer.
The study was conducted by scientists at Newcastle University in the United Kingdom and published in the journal Cancer. It is one of the largest studies to examine whether healthy lifestyle recommendations developed for cancer prevention may also benefit people who eventually become cancer survivors.
Cancer affects millions of families worldwide. While modern treatments have improved survival rates, many people continue to face health challenges after diagnosis. Researchers are increasingly interested in identifying factors that can improve quality of life and longevity beyond medical treatment alone.
For this study, scientists analyzed information from 28,550 people who later developed cancer. The participants were part of the UK Biobank, a long-running health project that collects detailed information about people’s lifestyles, diets, and medical histories.
Before receiving a cancer diagnosis, participants had reported information about their eating habits, physical activity, alcohol intake, and body weight. Researchers used these details to calculate how closely each person followed five recommendations created by the World Cancer Research Fund and the American Institute for Cancer Research.
The recommendations are relatively straightforward. They encourage maintaining a healthy weight, being physically active, eating a diet rich in whole grains, fruits, vegetables, and beans, limiting red and processed meat, and avoiding excessive alcohol consumption.
Researchers assigned a score from zero to five based on adherence to these recommendations. They then followed participants over time to examine survival outcomes after cancer diagnosis.
The results were encouraging. Every additional recommendation a person followed was linked to an 8 percent reduction in the risk of death from any cause. People with the healthiest lifestyles overall experienced the greatest benefits.
When the researchers divided participants into groups based on their scores, they found that individuals in the highest-scoring group had a 16 percent lower risk of death compared with those in the lowest-scoring group. This difference remained even when factors such as smoking were considered.
One particularly important finding was that the benefits appeared across different types of cancer. The pattern was observed among people diagnosed with cancers such as breast cancer and liver cancer, suggesting that healthy living may support survival regardless of the specific cancer involved.
Scientists believe healthy habits may improve survival through several pathways. A nutritious diet provides vitamins, minerals, fiber, and other nutrients that support the body’s normal functions.
Physical activity helps maintain strength, improves circulation, and supports mental wellbeing. Maintaining a healthy weight may reduce strain on the body and lower the risk of additional illnesses that can complicate cancer treatment.
The findings challenge the idea that lifestyle changes only matter before disease develops. Instead, they suggest that the body’s overall health at the time of diagnosis may influence how well it copes with cancer and treatment.
Researchers say the study supports efforts to encourage healthy habits not only among the general public but also among people living with and beyond cancer. Lifestyle support programs could become an important part of survivorship care in the future.
The research also carries an optimistic message. Many factors that influence cancer outcomes cannot be controlled, but healthy lifestyle choices are areas where people may be able to take practical action. Even small improvements, such as becoming more active or improving diet quality, could potentially contribute to better long-term health.
As with all observational studies, there are limitations. The research cannot definitively prove that healthy habits caused the longer survival. People who follow healthy lifestyles may also differ in other ways that affect their health. Nevertheless, the large number of participants and the consistency of the findings strengthen confidence in the results.
Overall, the study provides strong evidence that the same habits recommended to reduce cancer risk may also help people live longer after cancer develops. The findings highlight the importance of healthy eating, regular physical activity, weight management, and limiting alcohol throughout life.
They suggest that healthy living is not only about preventing disease but may also play a valuable role in helping people live longer and healthier lives after a cancer diagnosis.
Source: Newcastle University.
