Why Prevention Needs a New Playbook
Written by Dr Todd On, Associate Consultant, Family Physician, MBBS, GDFM, MMED (FM), MCFP (S)
Singapore has made progress in slowing the rise of diabetes. Yet, there is a bigger question that remains: Are we preventing metabolic disease early enough?
For many years, healthcare has largely been designed to respond once symptoms of diseases appear. High blood sugar? Start treatment. High cholesterol? Prescribe medication. Fatty liver? Monitor and manage.
While this approach is effective, it often begins only after years of silent metabolic health decline. By the time many people receive a diagnosis, insulin resistance, chronic inflammation, and metabolic dysfunction may have been developing for years or more.
According to Singapore's National Population Health Survey (NPHS), the prevalence of diabetes among residents during the period 2023-2024 is at 9.1%, which means that 1 in 11 Singaporeans are living with diabetes.
Behind every diagnosis of diabetes are many more people living with insulin resistance, elevated blood sugar after meals, excess visceral fat, fatty liver disease, or other early metabolic abnormalities that have yet to cross the diagnostic threshold. Waiting until disease develops before starting intervention would mean missing years of opportunity to do something earlier.
The Traditional Prevention Model
Traditional prevention often revolves around annual health screenings and broad lifestyle advice. Advice would usually be: “Eat healthier. Exercise more. Lose weight.”
While these recommendations are scientifically sound, they can also feel frustratingly generic. For example, two different people can eat the same meal and experience dramatically different blood glucose responses. One may maintain normal glucose levels despite being overweight, while another develops insulin resistance despite appearing slim.
This is because metabolism is highly individual.
Genetics, sleep, stress, muscle mass, visceral fat, daily activity, and previous eating patterns all influence how our bodies process food.
General advice remains important, but today's technology allows us to go a step further: understanding how your body responds.
A New Playbook Starts with Personal Data
A noticeable shift is that preventive healthcare is moving away from assumptions, and toward data and measurement. Instead of guessing which foods work best, individuals can now observe their own glucose responses using tools such as Continuous Glucose Monitoring (CGM) sensors.
Originally developed for people with diabetes, CGM sensors are increasingly being used as a tool to help individuals understand:
How different meals affect blood glucose
Which foods cause prolonged glucose spikes
The impact of sleep and stress on blood glucose
How exercise changes glucose control
How daily habits influence overall metabolic health in terms of blood glucose control
With this, people gain personalized insights that can guide sustainable behavior change. Data doesn't replace healthy habits; it makes those habits more targeted.
Small Changes Can Create Meaningful Improvements
The future of metabolic health isn't built on extreme diets or complicated biohacks. More often than not, the biggest improvements come from consistently applying simple habits. Food sequencing is one example. Eating vegetables and other fiber-rich foods first, followed by protein, before consuming carbohydrates may help reduce post-meal glucose spikes. Dietary fiber slows gastric emptying and digestion, while protein stimulates satiety and moderates glucose absorption. Together, they act as a natural "speed bump," allowing glucose to enter the bloodstream more gradually. The same meal eaten in a different order can produce a noticeably different metabolic response.
Changes like these are not complicated interventions; they are just small adjustments that become easier to maintain because they fit into everyday life.
Prevention = Building Metabolic Resilience
For many people, prevention may mean avoiding disease. Yet, prevention can also be viewed as building resilience.
Healthy metabolism influences far more than blood sugar as it affects:
Energy throughout the day
Weight regulation
Cardiovascular health
Liver health
Healthy aging
Long-term quality of life
If people decide to act on their metabolic health early, they're not simply lowering the future risk of diabetes; they're investing in healthier years ahead.
Healthcare should give people agency
Perhaps the future of healthcare isn't simply about treating disease more effectively; it is about giving people the agency to prevent it. That means helping individuals understand their own biology, recognizing that one-size-fits-all advice has limitations, and supporting sustainable habits before illness develops.
This way, healthcare becomes less reactive and more collaborative, and patients become active participants in their own health journey.
Looking ahead
The next chapter of prevention won't be written through more medication alone. It will come from combining medical expertise with personalized data, practical lifestyle strategies, and continuous support that empowers people to make informed decisions every day.
Preventing disease isn't a single event; it's a lifelong process of understanding how your body works and giving it what it needs to stay healthy.
About the Author
Dr. Todd On, an Associate Consultant and Family Physician with 16 years of experience in tertiary and community care, specializes in person-centered treatment for acute and chronic conditions. He has led quality initiatives in smoking cessation and diabetic care and is an award-winning clinical tutor at the College of Family Physicians Singapore.