Include, Don’t Exclude: Elisa Olivier-Nielsen on Why Diabetes Nutrition Should Start with What You Can Eat

The first thing most people hear after a diabetes diagnosis is a list of what they can't eat. Elisa Olivier-Nielsen thinks that's backwards — and that the restriction-first approach is one of the reasons so many diabetes nutrition plans fail.

Olivier-Nielsen is a Registered Dietitian Nutritionist with a Master's degree, practicing in Prescott Valley, Arizona, through EON Consulting. With extensive experience in medical nutrition therapy for metabolic conditions, she has seen firsthand how the standard restriction-based approach to diabetes care fails the very people it's meant to help. Her specialty is diabetes nutrition, and she brings both clinical training and a deep understanding of the psychological dynamics of chronic disease management. Her clinical philosophy inverts the conventional script: start with what you can eat, build meals around inclusion rather than elimination, and let variety, balance, and moderation do the work that rigid food rules try to do through willpower alone.

Inclusion Over Elimination

The four pillars Olivier-Nielsen names — variety, balance, nutritional adequacy, and moderation — sound simple. They're anything but. In a nutrition landscape dominated by elimination diets, carb-counting protocols, and glycemic index spreadsheets, the idea that a person with diabetes can eat broadly, joyfully, and well feels almost radical. Yet Olivier-Nielsen sees it work every day in her practice — patients who stop dreading meals and start enjoying them, while their numbers improve. But the research is catching up to what dietitians like Olivier-Nielsen have seen clinically for years.

A 2023 review in Diabetologia examined the relationship between diet, nutrition, obesity, and type 2 diabetes and concluded that overall dietary pattern quality matters more than any single macronutrient ratio^[1]. Diets emphasizing variety, whole foods, and adequate micronutrition consistently outperformed restrictive approaches in long-term glycemic control. The authors specifically cautioned against the assumption that carbohydrate restriction alone is sufficient for diabetes management — an assumption that drives much of the popular nutrition advice patients encounter online.

An umbrella review of dietary interventions for type 2 diabetes prevention, published in Nutrients, found that dietary patterns emphasizing plant diversity, fiber, and balanced macronutrient distribution were associated with reduced diabetes incidence regardless of the specific foods included or excluded^[5]. The protective factor wasn't what was removed from the diet. It was what was present.

This finding challenges the dominant narrative in diabetes nutrition, which for decades has centered on restriction. Don't eat sugar. Limit carbs. Avoid white foods. Count your exchanges. The messaging is relentlessly negative, and the psychological cost is real. Research on dietary adherence consistently shows that restriction-based approaches produce short-term compliance followed by long-term failure — not because patients lack willpower, but because the human relationship with food cannot be reduced to a spreadsheet. People eat for pleasure, comfort, culture, and connection. A nutrition plan that ignores these dimensions ignores the human being following it.

Olivier-Nielsen's inclusive model acknowledges this reality without abandoning clinical rigor. The goal isn't to tell patients they can eat anything — it's to build a foundation of nutrient-dense, blood-sugar-stabilizing foods that leaves less room for the problematic ones. The plate fills up with good before the patient needs to think about bad. This is behavioral design applied to nutrition: make the healthy choice the easy choice, and the unhealthy choice becomes less relevant over time, not through force of will but through the simple physics of a full plate.

This is the clinical logic behind Olivier-Nielsen's approach. When a patient's plate is rich in nutrient-dense foods — vegetables, quality proteins, healthy fats, whole grains, legumes — the problematic foods naturally occupy less space. Inclusion crowds out the excess without requiring the patient to white-knuckle their way through a list of forbidden items. The psychology shifts from deprivation to abundance, and adherence follows.

The Partnership Between Plate and Movement

Olivier-Nielsen frames nutrition and movement as partners, not alternatives — and the evidence strongly supports this pairing. A 2024 systematic review and meta-analysis in PeerJ found that combined aerobic and resistance training significantly improved glycemic control (measured by HbA1c), reduced systemic inflammation, and improved quality of life in patients with type 2 diabetes^[3]. Notably, the benefits were additive: exercise enhanced the effects of dietary changes, and dietary quality enhanced the effects of exercise.

A network meta-analysis published in the International Journal of Behavioral Nutrition and Physical Activity compared multiple exercise modalities for type 2 diabetes and found that combined training — both aerobic and resistance — produced the greatest improvements in HbA1c, followed by resistance training alone^[4]. Walking alone was beneficial but less effective than structured combined programs. The implication for clinical practice is clear: the prescription isn't just “eat better” or “move more” — it's both, simultaneously, with specificity about what kind of movement.

For patients who feel overwhelmed by the prospect of overhauling both diet and exercise at once, Olivier-Nielsen's inclusive framework offers a practical on-ramp. Adding a 15-minute walk after dinner. Including an extra serving of vegetables at lunch. Swapping one refined grain for a whole grain. The key insight from Olivier-Nielsen's practice is that patients who add before they subtract build momentum instead of resistance. A patient who starts walking after dinner feels better the next morning. A patient who adds a salad to their lunch notices afternoon energy improves. These small wins create a positive feedback loop that motivates larger changes — whereas a patient who starts by eliminating their favorite foods feels deprived from day one and burns out by week three.

This progression — from small additions to meaningful lifestyle shifts — mirrors the clinical evidence on exercise progression for diabetes management. Starting with walking and gradually adding resistance training produces better long-term outcomes than starting with an aggressive program that patients can't sustain. The principle is the same across nutrition and movement: sustainability beats intensity every time.

Each addition builds on the last, and the cumulative effect on blood glucose regulation can be substantial — often more substantial than a dramatic, unsustainable overhaul that lasts two weeks.

The Hidden Sugar Problem

This is where Olivier-Nielsen's inclusive philosophy meets a harder truth: the food system is working against her patients. Added sugars now appear in an estimated 74% of packaged foods sold in the United States, often under names most consumers don't recognize — maltodextrin, dextrose, barley malt, rice syrup, fruit juice concentrate. A person with diabetes who avoids obvious sweets but eats commercial bread, pasta sauce, and flavored yogurt may be consuming 30-50 grams of hidden sugar daily without knowing it.

A critical review in Critical Reviews in Clinical Laboratory Sciences examined the relationship between sugar consumption, metabolic disease, and obesity, finding that excess added sugar — particularly from sugar-sweetened beverages and processed foods — is independently associated with increased diabetes risk even after controlling for total caloric intake^[2]. The mechanism isn't just about calories. Rapid glucose spikes from hidden sugars trigger insulin surges that, over time, degrade insulin sensitivity and promote visceral fat accumulation.

Olivier-Nielsen's point is that sugar education shouldn't be an afterthought in diabetes care — it should be foundational. A patient who understands that their “healthy” granola bar contains 18 grams of added sugar, or that their pasta sauce has more sugar per serving than their dessert, makes fundamentally different food choices. This is where a registered dietitian adds value that a meal plan alone cannot: the ability to decode the food system for a patient navigating it with a chronic condition.

The inclusive approach doesn't mean ignoring sugar. It means teaching patients to identify the hidden sources, understand their impact, and replace them with whole-food alternatives that satisfy the same culinary need without the metabolic cost. Swap the commercial sauce for one made from whole tomatoes. Replace the flavored yogurt with plain Greek yogurt and fresh berries. These aren't sacrifices — they're upgrades. And unlike the elimination approach, which requires constant vigilance about what you're not eating, the inclusive approach becomes self-reinforcing: once a patient discovers that homemade tomato sauce tastes better than the jarred version with 9 grams of added sugar, the swap becomes permanent without any willpower required.

The broader implication of Olivier-Nielsen's work extends beyond individual patient care. If the diabetes nutrition paradigm shifted from elimination to inclusion at scale — in clinical guidelines, in patient education materials, in the way dietitians are trained — adherence rates would almost certainly improve. The current model produces a population of patients who feel guilty about food, associate their condition with deprivation, and cycle through restrictive diets that fail. Olivier-Nielsen's model produces patients who feel empowered, curious about nutrition, and equipped with a framework they can sustain for life. The clinical outcomes follow the psychology, not the other way around. These aren't sacrifices — they're upgrades. And for a person managing blood sugar, they're game-changers.

A Plate You Actually Want to Eat

The quiet revolution in Olivier-Nielsen's work is that she makes diabetes nutrition something a person can live with — not just survive on. The standard diabetic diet, with its rigid exchanges, forbidden foods, and joyless portion control, has a dismal adherence rate for a reason: it asks people to eat in a way that no one would choose voluntarily. Olivier-Nielsen's model asks a different question: what does a plate look like that manages blood sugar and makes you look forward to dinner?

That question — deceptively simple, clinically powerful — is the difference between a nutrition plan that works for six weeks and one that works for six years. For people managing diabetes who are tired of being told what they can't eat, Olivier-Nielsen offers a different starting point: let's talk about what you can. The sustainability question is ultimately what separates effective diabetes nutrition from the kind that looks good on paper but fails in the kitchen. A plan that a patient actually follows — imperfectly, with occasional missteps, but consistently over months and years — will always outperform a perfect plan that collapses after two weeks. Olivier-Nielsen's inclusive framework is designed for the long game: not the dramatic before-and-after, but the gradual, permanent shift in how a person relates to food, movement, and their own body.

And if you're looking for a practitioner who takes this approach, finding the right dietitian or functional medicine provider is the place to start.