When treatment replaces prevention, the patient can become a permanent customer
Modern medicine is one of humanity’s great achievements. Antibiotics save lives. Insulin is essential for people with type 1 diabetes. Blood-pressure medicines prevent strokes. Surgery repairs what lifestyle alone cannot repair. Used well, medicines relieve suffering and give people years they might otherwise lose.
But we must ask an uncomfortable question: Have we allowed medicine to become a substitute for health?
Too often, a person’s weight rises, blood glucose worsens, blood pressure climbs and fatty liver develops—and the main response is another prescription. Each medicine may be clinically justified. Yet the underlying environment that helped create the illness remains untouched: highly processed food, constant access to sugar and refined carbohydrates, poor sleep, inactivity, stress, loss of muscle and too little practical education.
We measure the disease. We name it. We medicate it. But do we teach the person how to change the conditions in which it grew?
This is not an argument against doctors, pharmacists or necessary medication. It is an argument against a model that waits for people to become sick and then treats them as passive recipients for life.
The costly cycle of Big Food and Big Pharma
There is a troubling commercial cycle in modern society. The food industry profits when people consume more. Products are engineered for convenience, speed and repeat purchase. The pharmaceutical industry then profits from treating many of the chronic conditions associated with excess weight, poor diet and metabolic dysfunction.
That does not require a conspiracy. It requires only incentives that point in the wrong direction.
In Australia, chronic conditions account for the overwhelming majority of disease burden. The Australian Institute of Health and Welfare estimates that chronic conditions caused 84% of the total disease burden in 2024, while 36% of the overall burden could potentially have been prevented by reducing exposure to modifiable risk factors. Australia spent about $98 billion on chronic conditions in 2023–24, more than half of all disease spending. (AIHW: chronic conditions; AIHW: preventable burden; AIHW: disease spending)
We are spending extraordinary sums managing downstream disease while many people still do not know how to read a food label, identify hidden sugar, build a satisfying whole-food meal, preserve muscle during weight loss or recover after a lapse.
The body responds differently to real food
A tightly controlled US National Institutes of Health trial compared ultra-processed and unprocessed diets. The meals offered were matched for presented calories, macronutrients, sugar, sodium and fibre. Even so, people eating the ultra-processed diet consumed about 508 extra calories a day and gained about 0.9 kilograms in two weeks. On the unprocessed diet, they lost about the same amount. This was not simply a failure of character; the food environment changed eating behaviour. (NIH randomised trial)
That finding matters. Telling people merely to “eat less and move more” ignores what modern processed foods can do to appetite, eating speed and passive overconsumption.
Sugar deserves particular attention—not because every gram is poison, but because free sugar is easily overconsumed and often arrives without the protein, fibre and structure that make whole foods satisfying. The World Health Organization recommends limiting free sugars to less than 10% of daily energy, with a further reduction below 5%—about six teaspoons a day—offering additional benefit. (WHO sugar guideline)
The Australian Government likewise advises limiting discretionary foods high in added sugar, salt and saturated fat because they provide substantial energy but few nutrients. (Australian Government: eating well)
Medication can control a signal without teaching a skill
A tablet can lower a measurement. An injection can reduce appetite. These can be valuable outcomes. But medication alone does not teach someone:
· what to buy at the supermarket;
· how to create a protein-centred meal;
· how to distinguish hunger from habit or emotion;
· how to avoid liquid sugar and refined snacks;
· how to maintain muscle through adequate protein and resistance exercise;
· how to respond when weight begins to return; or
· how to build a healthier household rather than a temporary personal diet.
This distinction is especially relevant in the age of GLP-1 medicines. These drugs can produce clinically significant weight loss and health improvements, and no responsible person should deny that. Yet the STEP 1 extension found that, within one year of stopping semaglutide, participants regained roughly two-thirds of the weight they had lost, while many cardiometabolic improvements moved back toward baseline. The lesson is not that the medicine “failed.” The lesson is that appetite suppression is not the same as acquiring a durable way of life. (STEP 1 extension)
If a medicine is required indefinitely, the patient deserves to know that before beginning. They also deserve nutritional education, resistance training guidance and a realistic maintenance or off-ramp plan—not merely another repeat prescription.
Food-led intervention can change the course of disease
The Diabetes Prevention Program showed that an intensive lifestyle intervention reduced the development of type 2 diabetes more than metformin during the initial trial—58% versus 31% compared with placebo. At 15 years, diabetes incidence remained 27% lower in the original lifestyle group and 18% lower in the metformin group. (NIDDK trial summary; 15-year follow-up)
The DiRECT trial went further. A structured weight-management program delivered through primary care enabled some people with type 2 diabetes to achieve remission without glucose-lowering medication. At five years, 13% of extension participants were still in remission, and those maintaining more substantial weight loss had the greatest chance of remaining well. The honest message is that remission is possible for some people, but continued support and weight maintenance matter enormously. (DiRECT five-year follow-up)
A large randomised trial also found that a Mediterranean-style eating pattern supplemented with extra-virgin olive oil or nuts reduced major cardiovascular events among people at high cardiovascular risk. Food is not a miracle cure, but dietary patterns can influence hard clinical outcomes—not merely the number on a scale. (PREDIMED trial)
The answer is partnership, not dependence
The choice should never be falsely presented as “food or medicine.” A person may need both. The better question is: Does the treatment increase the person’s capacity, or does it leave them permanently dependent and uninformed?
Good healthcare should rescue when rescue is needed, medicate when medication is justified and educate at every opportunity. Doctors and pharmacists should be able to say:
“This medicine may protect you today. Now let us help you build the health skills that can protect your future.”
True health is not manufactured in a laboratory and delivered in a box. It is built repeatedly—in kitchens, supermarkets, gardens, walking tracks, bedrooms and family dining rooms.
The future of healthcare should not be anti-pharmaceutical. It should be pro-person.
We need fewer passive patients and more informed participants. We need to move from indefinite disease management toward prevention, capability and—where clinically possible—remission. We need to stop asking only, “What drug can control this?” and begin asking, “What does this person need to know and do to become healthier?”
Because the most sustainable health system is one that helps people need less of it.