Cancer survivors often struggle with eating healthy after treatment ends. Researchers in Korea tested a new phone app designed to help cancer survivors track their food and get nutrition tips. Twenty-four cancer survivors used the app for 4 weeks. The results were encouraging: people who used the app more frequently showed better eating habits and felt less hungry. Their overall quality of life also improved slightly. The study shows that a nutrition app could be a helpful tool for cancer survivors, especially those over 60 years old. However, this was a small test study, so larger research is needed to confirm these benefits work for everyone.
The Quick Take
- What they studied: Whether a mobile phone app that tracks food intake and provides nutrition feedback could help cancer survivors improve their eating habits and feel better overall.
- Who participated: Twenty-four cancer survivors (mostly women, average age 58.5 years) who had completed cancer treatment. Most had breast cancer and were in stable health during the study.
- Key finding: People who used the app regularly showed meaningful improvements in eating habits, especially in eating the right amounts of food. They also reported less appetite loss and slightly better overall quality of life after 4 weeks.
- What it means for you: If you’re a cancer survivor struggling with nutrition, a phone app might help you make better food choices and feel better. However, this was a small pilot study, so talk with your doctor before relying on it as your main nutrition tool.
The Research Details
This was a pilot feasibility study, which means researchers were testing whether the app could work and whether people would actually use it before doing a larger study. All 24 participants used the same nutrition app for 4 weeks. The app let them log what they ate and received personalized feedback about their diet. Researchers measured how often people used the app and tracked changes in their eating habits and quality of life before and after the 4-week period.
The study took place at a major cancer hospital in Korea. Researchers looked at how many times people opened the app each day, how long they spent using it, and whether they stuck with daily food tracking. They also gave participants questionnaires to measure their nutrition quality and how they felt physically and emotionally.
This research approach is important because it shows whether cancer survivors will actually use a nutrition app in real life and whether it might help them. Pilot studies like this one help researchers understand what works before investing time and money in larger studies. By tracking actual app usage and real health changes, researchers can see if the tool is practical and worth studying further.
This study has some strengths: it had a high completion rate (89% of people finished), people used the app consistently (averaging 2.3 times per day), and no one experienced harmful side effects. However, there are important limitations to consider: it was a small group, there was no comparison group of people who didn’t use the app, and it only lasted 4 weeks. These factors mean we can’t be completely certain the app caused the improvements—some changes might have happened anyway.
What the Results Show
The most important finding was that people’s eating habits improved, especially in the area of eating appropriate portion sizes. On a nutrition quality scale, the ‘Moderation’ score improved from 76.6 to 81.0 points. This improvement was statistically significant, meaning it’s unlikely to have happened by chance.
People who used the app more frequently showed bigger improvements in their eating habits. For example, those with higher app engagement had better portion control and ate more balanced meals. The study also found that appetite loss—a common problem for cancer survivors—decreased significantly. People reported less appetite loss after using the app for 4 weeks.
Overall quality of life showed a modest improvement, with people reporting slightly better general health and well-being. Importantly, no one experienced any negative side effects from using the app, and most people maintained stable body weight throughout the study.
Additional positive trends emerged in other areas. Overall dietary behavior improved, though this change wasn’t quite large enough to be statistically certain. Balance in eating different food groups also showed improvement. Older participants (age 60 and above) appeared to benefit more from the app than younger participants. People who had been cancer survivors for more than 3 years also showed stronger improvements, suggesting the app might be particularly helpful for long-term survivors.
Previous research has shown that cancer survivors often struggle with nutrition and quality of life after treatment. This study adds to that knowledge by showing that technology-based tools might help address these challenges. Most prior nutrition apps haven’t been specifically designed for cancer survivors, so this research fills an important gap. The high engagement rates (people using the app 2.3 times daily) are encouraging compared to typical health app usage, which often drops off quickly.
This study was small with only 24 participants, so results may not apply to all cancer survivors. There was no control group—no one to compare against who didn’t use the app—so we can’t be completely sure the app caused the improvements rather than other factors. The study only lasted 4 weeks, which is too short to know if benefits continue long-term. The participants were mostly from one hospital in Korea and were mostly female and breast cancer survivors, so results might differ for other groups. Finally, people who chose to participate might be more motivated about nutrition than the average cancer survivor, which could make results look better than they would be for everyone.
The Bottom Line
Based on this pilot study, a nutrition app may be a helpful tool for cancer survivors who want to improve their eating habits and quality of life. The evidence is moderate—the study shows promise but is too small to be definitive. If you’re a cancer survivor interested in better nutrition, discuss using a nutrition app with your doctor or dietitian. It appears most helpful if you use it regularly (at least once daily). This should complement, not replace, professional nutrition counseling from a registered dietitian.
This research is most relevant for cancer survivors, especially those over 60 years old or those who have been survivors for more than 3 years. It may be particularly helpful for people struggling with appetite loss or poor eating habits after cancer treatment. Family members and caregivers of cancer survivors might also find this useful. Healthcare providers working with cancer survivors should know about this option. However, people with severe eating disorders or those unable to use smartphones should discuss alternatives with their healthcare team.
In this study, improvements appeared within 4 weeks of regular app use. However, 4 weeks is a short timeframe. Realistic expectations are that you might notice small improvements in appetite and eating habits within 2-4 weeks if you use the app consistently. Larger improvements in overall quality of life may take longer—likely several months of regular use. Long-term benefits beyond 4 weeks remain unknown and need further research.
Want to Apply This Research?
- Track daily app sessions and food logging consistency. Set a goal to use the app at least once daily and log meals at least 85% of days. Monitor changes in appetite levels weekly using a simple 1-10 scale. Track portion sizes of key foods (proteins, vegetables, grains) to measure the ‘moderation’ improvements seen in this study.
- Start by logging one meal per day, then gradually increase to all meals. Use the app’s feedback feature to identify which foods help you feel better. Set reminders for meal times to build the habit. Focus on portion control and eating a variety of food groups, as these showed the most improvement in the study. Share your progress with your healthcare team monthly.
- Check your app engagement weekly—aim for at least 5-7 sessions per week. Review your nutrition quality score monthly to see trends. Keep a simple journal of how you feel (energy, appetite, mood) weekly to connect app use with real-life improvements. Schedule check-ins with your doctor or dietitian every 4-8 weeks to discuss progress and adjust goals. Consider taking photos of meals to track eating patterns over time.
This research is a small pilot study and should not replace professional medical or nutritional advice from your healthcare team. Cancer survivors should consult with their oncologist and registered dietitian before making significant dietary changes or relying on any app as their primary nutrition tool. This study lasted only 4 weeks, so long-term safety and effectiveness are unknown. Individual results may vary based on cancer type, treatment history, and overall health status. If you experience any adverse effects or have concerns about your nutrition, contact your healthcare provider immediately.
This research translation is published by Gram Research, the science division of Gram, an AI-powered nutrition tracking app.