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Every January, and increasingly all year long, patients arrive in Dr. Nikolas Antoniou’s office holding a question they expect to have a simple answer. Is keto better than low fat? Should they be fasting? Is the diet a coworker swears by the one that will finally work? They want a verdict, and they want it to be short.
Dr. Antoniou, who has practiced family medicine in the Chicago area for three decades, understands the impulse. The volume of nutrition advice online has made eating feel like a subject only experts can navigate. His answer tends to disappoint patients looking for a headline, and then, once they sit with it, to relieve them.
“The best diet is the one you will still be following in two years,” Dr. Antoniou said. “I have watched patients lose weight on nearly every plan you can name. What separates the ones who keep it off is not the plan. It is whether the plan fits a life they can actually live.”
Why the fights about diets miss the point
Dr. Antoniou is not dismissive of nutrition science. He simply thinks the public conversation fixates on the wrong variable. Most reasonable eating patterns share far more than they dispute. They lean on vegetables, fruit, whole grains, legumes, and lean protein. They limit added sugar, refined starch, and heavily processed food. The arguments at the margins, about exact carbohydrate or fat ratios, matter far less for the average patient than whether they can stick to the pattern at all.
When patients ask him to pick a winner, he points to the dietary patterns with the deepest evidence behind them. The Mediterranean style of eating and the DASH approach are two he often recommends for blood pressure. Both are less rulebooks than templates, and both are flexible enough to survive contact with real life. “A plan that requires you to eat in a way you hate is not a plan,” he said. “It is a countdown to quitting.”
The single change he asks for first
Rather than handing patients a long list of prohibitions, Dr. Antoniou usually starts with one shift that pays off out of proportion to its difficulty: cutting back on ultra-processed food and sugary drinks. A great deal of the excess sugar, sodium, and refined fat in the American diet arrives through packaged convenience food and beverages, often without registering as a meal at all.
“Many people are surprised how much they are drinking their calories,” he said. “Soda, sweetened coffee, juice, and energy drinks. You can do very well simply by not pouring sugar into yourself between meals.” He frames it as addition rather than deprivation where he can: more vegetables, more fiber, more protein at breakfast so the day starts on stable footing rather than a blood sugar spike.
Nutrition as the thread through everything else
For a family physician, nutrition is not a standalone topic. It runs straight through the conditions Dr. Antoniou treats every day. The same dietary changes that lower blood pressure also improve blood sugar, cholesterol, and weight. A patient managing type 2 diabetes, hypertension, and a few extra pounds is, in many cases, working on a single problem from several directions.
That is why he resists treating diet as a separate appointment or a printout handed over on the way out. He weaves it into the conversation about whatever brought the patient in, and he tries to connect the advice to something the patient already cares about. A grandparent who wants to keep up with grandchildren responds differently than they would to an abstract warning about cardiovascular risk. “Motivation is personal,” he said. “My job is to find the reason that already matters to you, then attach the change to it.”
What he tells patients who feel overwhelmed
For patients paralyzed by conflicting information, Dr. Antoniou offers a deliberately small set of principles rather than a regimen. Build meals around whole foods. Make vegetables the largest part of the plate. Choose water over sweetened drinks most of the time. Do not expect perfection, and do not treat one bad day as a reason to abandon the effort.
He is wary of the all or nothing thinking that fad culture encourages, because he has watched it derail patients who were doing well. A missed week is not a failure. A holiday is not a relapse. The trajectory over months and years is what changes health, not any single meal. “The goal is not a perfect diet,” he said. “The goal is a better pattern you can sustain. Sustainable beats optimal every time, because optimal that you quit is worth nothing.”
Where to start
Dr. Antoniou suggests that patients curious about improving their nutrition begin with an honest conversation with their primary care provider. A physician who knows the patient’s blood pressure, blood sugar, medications, and history can help separate advice that is merely popular from advice that fits the person in the room. For some patients he recommends a referral to a registered dietitian for deeper, individualized planning.
“Food is one of the few treatments a patient fully controls,” Dr. Antoniou said. “That makes it powerful, and it makes it personal. I am not interested in handing people a fashionable diet. I am interested in helping them find the way of eating they can carry for the rest of their life.”
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