Achieving Nutrition Goals With Kaizen

This past week I had the honor of giving a talk on the power of substitution in making long-term lifestyle changes to one’s diet. Making lasting changes to how we eat can feel overwhelming, but it doesn’t have to be. In fact, small, consistent tweaks to your diet can add up to big gains for your health—this is the principle behind the Kaizen effect, a Japanese philosophy of continuous, incremental improvement. When we apply this mindset to our eating habits, we find that sustainable change becomes possible. So how can you do this at home?

What is Kaizen?

Before we get into any roadmaps, let’s define the concept. Kaizen, which translates to “good change”, originates from Japanese management practice and involves making small, manageable adjustments that cumulatively lead to significant improvements over time. While it began in the business world, it has been successfully applied to various health care settings.1,2 The principle is that small, consistent changes are easier to implement and maintain, reducing the likelihood of overwhelming individuals and increasing the sustainability of the changes. This approach can be highly effective in promoting sustainable lifestyle changes and health behaviors.

Kaizen and Lifestyle Modifications

I often hear the phrase, “Go big or go home.” While I appreciate the enthusiasm, this method is usually ineffective in achieving lifestyle modifications, especially when it comes to eating. Most people can stick to a new diet for a little while. The long-term maintenance is the hard part, and many return to old habits over time—even with the best of intentions.3 

The small change approach, which involves making minor, manageable adjustments to diet and physical activity, has been shown to be effective in preventing weight gain and promoting sustainable lifestyle changes. For instance, a systematic review and meta-analysis found that small dietary and physical activity changes, such as reducing caloric intake by 100 kcal per day or increasing daily steps by 1000, can lead to modest but significant weight management benefits over time.4

The Joint Task Force of the American Society for Nutrition, Institute of Food Technologists, and International Food Information Council supports this approach, suggesting that small, conscious adjustments in diet can help stabilize and eventually reduce obesity rates by preventing further weight gain.5 This strategy is particularly effective because it focuses on achievable goals that are easier to integrate into daily life and maintain long-term.

Additionally, the American Heart Association highlights that small, incremental dietary changes, such as increasing the intake of fruits, vegetables, and whole grains while reducing red meat and refined grains, can lead to significant improvements in cardiovascular health and overall dietary quality.6,7

Be Open to Change & Set Goals

Evaluating your readiness to change is a critical first step. If you are not ready, you will not be successful. One technique I use with my patients is to ask them why they want to be healthier. Everyone has different reasons, but those reasons are very important to each of them and serve as motivators to get mentally ready for change. This technique is called the Transtheoretical Stages of Change Model. It is endorsed by the American Heart Association (AHA) and provides a structured framework for assessing readiness. It guides patients through the stages of precontemplation, contemplation, preparation, action, and maintenance. This is how I can personalize counseling that aligns with my patient’s goals, preferences, and barriers. During this time, we set realistic, specific, and time-based goals. This increases the chances of success and helps teach patients that they really can make these changes.8-10 Many people are able to change mindsets on their own and do not need external counseling. If you are one of these people, start exploring goals that are important to you to help you get ready and be open to making some changes.

Practical Strategies for Dietary Substitutions

Small, achievable dietary substitutions are central to the Kaizen approach. Here are a few changes you can make.

  • Swap fruit juice for whole fruit.
  • Use olive oil or avocado oil instead of butter or lard when cooking.
  • Replace white rice with whole grains such as brown rice, quinoa, or farro.
  • Use frozen vegetables instead of canned vegetables.
  • Replace one serving of meat with legumes each week.
  • Swap out white potatoes for sweet potatoes.

Instead of making all of these changes at once, incorporate them gradually. For example, do not throw out every canned good in your pantry. Use them and then buy the frozen version the next time you get groceries. This is a great swap because the prep is the same for both. However, the frozen vegetables have much less sodium than canned ones and are more nutrient dense because they haven’t undergone the heating process required for canning.7 Another important reason for gradual change is that it will mitigate the effects of increased fiber intake that occurs with increased vegetable consumption.7

Other Keys For Success

Using the Kaizen principle is a great start for achieving long-term success with lifestyle changes. However, there are other techniques that can be employed for long-term success.

  • Self-Monitoring – Regularly tracking your own behaviors, such as dietary intake, physical activity, or weight, can enhance self-awareness and promote adherence to lifestyle changes.11,12
  • Accountability Partners – Perhaps self-monitoring is not your thing. Having an accountability partner improves success rates for achieving long-lasting lifestyle modifications as well.13-15
  • Stimulus Control – Reduce exposure to unhealthy food items and increase exposure to healthy ones.16 For example, my Achilles heel is potato chips. I love just about every kind that exists. Potato chips are NOVA 4 processed foods and are usually loaded with saturated fats and sodium. So, I don’t buy potato chips. I buy little carrots for snacking instead.
  • Feedback and Monitoring – Mobile apps, wearable devices, or journals that provide feedback on progress and metrics can help maintain motivation and provide data for adjustments as needed.11,12,17,18
  • Relapse Prevention – Developing strategies to recognize and manage situations that may lead to lapses, such as stress or social events, can help maintain long-term changes.16 For example, if you are a sucker for the buffalo chicken dip at the tailgating event, develop a plan for that situation so you don’t succumb to gobbling up all the dip.

More strategies are available with the help of a professional. I won’t bore you with those details. It’s my job to know what those are, and this post is already long enough. 🙂 

The End Game

The ultimate goal is to eventually swap out the majority of energy-dense (high calorie), nutrient-poor foods for low calorie, nutrient-dense foods. It is not about restriction; it’s about refinement. This is also the long game. You are not going to see huge changes in your body composition early on. Those changes will come with time as you make more substitutions, so be patient with yourself. This is not a “go big or go home”. It’s a “live long and prosper.”

References

  1. Flug Ja SJASRE, et al. Kaizen Process Improvement in Radiology: Primer for Creating a Culture of Continuous Quality Improvement. Radiographics. 2022;42(3):919-928. doi:10.1148/rg.210086
  2. Knechtges P DMC. Application of Kaizen Methodology to Foster Departmental Engagement in Quality Improvement. Journal of the American College of Radiology. 2014;11(12 Pt A):1126-1130. doi:10.1016/j.jacr.2014.08.027
  3. James A, Lawrence B, O’Connor M. Healthy eating as a new way of life: a qualitative study of successful long-term diet change. INQUIRY: The Journal of Health Care Organization, Provision, and Financing. 2022;59:00469580221090397.
  4. Graham HE, Madigan CD, Daley AJ. Is a small change approach for weight management effective? A systematic review and meta‐analysis of randomized controlled trials. Obesity Reviews. 2022;23(2):e13357.
  5. Hill JO. Can a Small-Changes Approach Help Address the Obesity Epidemic? The American Journal of Clinical Nutrition. 2009;89(2):477-484. doi:10.3945/ajcn.2008.26566
  6. Laddu D MJKJ, et al. Health Behavior Change Programs in Primary Care and Community Practices for Cardiovascular Disease Prevention and Risk Factor Management Among Midlife and Older Adults. Circulation. 2021;144(24):e533-e549. doi:10.1161/CIR.0000000000001026
  7. Gardner Cd VMKPKS, et al. Popular Dietary Patterns: Alignment With American Heart Association 2021 Dietary Guidance. Circulation. 2023;147(22):1715-1730. doi:10.1161/CIR.0000000000001146
  8. Thomas Rj BALBTM, et al. Home-Based Cardiac Rehabilitation. Journal of the American College of Cardiology. 2019;74(1):133-153. doi:10.1016/j.jacc.2019.03.008
  9. Gidding Ss LAHFMS, et al. Implementing American Heart Association Pediatric and Adult Nutrition Guidelines. Circulation. 2009;119(8):1161-1175. doi:10.1161/CIRCULATIONAHA.109.191856
  10. Van Horn L CJAALJ, et al. Recommended Dietary Pattern to Achieve Adherence to the American Heart Association/ACC Guidelines. Circulation. 2016;134(22):e505-e529. doi:10.1161/CIR.0000000000000462
  11. Nadal IP, Angkurawaranon C, Singh A, et al. Effectiveness of Behaviour Change Techniques in Lifestyle Interventions for Non-Communicable Diseases: An Umbrella Review. BMC Public Health. 2024;24(1):3082. doi:10.1186/s12889-024-20612-8
  12. Samdal GB, Eide GE, Barth T, Williams G, Meland E. Effective Behaviour Change Techniques for Physical Activity and Healthy Eating in Overweight and Obese Adults; Systematic Review and Meta-Regression Analyses. The International Journal of Behavioral Nutrition and Physical Activity. 2017;14(1):42. doi:10.1186/s12966-017-0494-y
  13. Verweij L, Jørstad HT, Minneboo M, et al. The Influence of Partners on Successful Lifestyle Modification in Patients With Coronary Artery Disease. International Journal of Cardiology. 2021;332:195-201. doi:10.1016/j.ijcard.2021.04.007
  14. Jackson SE, Steptoe A, Wardle J. The Influence of Partner’s Behavior on Health Behavior Change: The English Longitudinal Study of Ageing. JAMA Internal Medicine. 2015;175(3):385-392. doi:10.1001/jamainternmed.2014.7554
  15. Prestwich A, Conner MT, Lawton RJ, et al. Randomized Controlled Trial of Collaborative Implementation Intentions Targeting Working Adults’ Physical Activity. Health Psychology: Official Journal of the Division of Health Psychology, American Psychological Association. 2012;31(4):486-495. doi:10.1037/a0027672
  16. Van Horn L, Carson JA, Appel LJ, et al. Recommended Dietary Pattern to Achieve Adherence to the American Heart Association/-American College of Cardiology (AHA/ACC) Guidelines: A Scientific Statement From the American Heart Association. Circulation. 2016;134(22):e505-e529. doi:10.1161/CIR.0000000000000462
  17. Brandt CJ, Clemensen J, Nielsen JB, Søndergaard J. Drivers for Successful Long-Term Lifestyle Change, the Role of E-Health: A Qualitative Interview Study. BMJ Open. 2018;8(3):e017466. doi:10.1136/bmjopen-2017-017466
  18. Bossen D, Bak M, Braam K, et al. Online and Offline Behavior Change Techniques to Promote a Healthy Lifestyle: A Qualitative Study. International Journal of Environmental Research and Public Health. 2022;19(1):521. doi:10.3390/ijerph19010521
  19. Chwyl C MALNJT, et al. “Mindset Matters”: Perseverance, a Balanced Approach and Structured Support as Facilitators of Whole Foods Plant-Based Adoption. Appetite. 2024;194:107163. doi:10.1016/j.appet.2023.107163
  20. Perraud E WJDAFHMF. Identifying the Most Efficient Detailed Trajectories Toward Healthy Diets-a Graph-Based Analysis. The Journal of Nutrition. 2023;153(9):2744-2752. doi:10.1016/j.tjnut.2023.07.007
  21. Cole Sa SDJYTRA. Using Motivational Interviewing and Brief Action Planning for Adopting and Maintaining Positive Health Behaviors. Progress in Cardiovascular Diseases. 2023;77:86-94. doi:10.1016/j.pcad.2023.02.003
  22. Golay A BEGR, et al. Taking Small Steps Towards Targets – Perspectives for Clinical Practice in Diabetes, Cardiometabolic Disorders and Beyond. International Journal of Clinical Practice. 2013;67(4):322-332. doi:10.1111/ijcp.12114

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