When Healthy Eating Becomes Unhealthy

Most of us have heard the message that food is medicine. Research has consistently shown that eating patterns can influence health. But somewhere along the way, many of us stopped seeing food as something that nourishes, satisfies, connects us with others, and brings pleasure. Instead, food has increasingly become a collection of protein grams, fiber targets, antioxidants, and micronutrients to optimize. This way of thinking has a name: nutritionism.

Coined by Australian sociologist Gyorgy Scrinis and later popularized by journalist Michael Pollan, nutritionism describes the tendency to reduce food to its individual nutrients while overlooking the complexity of how people actually eat and live. Health becomes something we believe we can achieve by optimizing nutrients rather than considering the whole picture. While nutrition science can absolutely inform our understanding of health, nutritionism often strips that science of context.

The Illusion of Control

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Health is determined by much more than what appears on our plates. Sleep, stress, genetics, relationships, movement, financial resources, access to healthcare, and emotional health all influence how we feel and function. Yet nutrition marketing often suggests that if we simply eat the right foods, avoid the wrong ingredients, and optimize every meal, we can control our health and eliminate uncertainty.

That message is appealing because certainty feels reassuring. The wellness industry often capitalizes on that anxiety. There is always another nutrient to optimize, another ingredient to fear, another supplement to buy, or another eating strategy promising better health.

Social media only amplifies these messages. Nutrition myths frequently oversimplify complex biological processes or present rigid habits as universal truths. Algorithms reward certainty, not nuance. "Never eat after 7 p.m." or "This food causes inflammation" spreads much faster than "The answer depends."

When Healthy Eating Starts Hurting Mental Health

As a psychotherapist specializing in eating disorders, I rarely see people whose struggles begin with a desire to become unhealthy. More often than not, they begin by wanting to eat "better." Over time, those intentions can become increasingly rigid. Meals are carefully calculated. Food labels are scrutinized. Entire food groups are eliminated. Eating out becomes stressful. Social events are avoided because the food feels unpredictable. Thoughts about eating can consume hours of the day.

For some people, these patterns become intertwined with anxiety, obsessive-compulsive disorder (OCD), or eating disorders. The problem is not nutrition knowledge itself. The problem is when nutrition becomes a source of fear, self-worth, or perceived control.

Context Matters More Than the Food

The same nutrition recommendation can have very different effects depending on the person receiving it. A recommendation that is neutral or even helpful for one person may reinforce fear, rigidity, or compulsive behaviors in someone struggling with an eating disorder, obsessive-compulsive disorder (OCD), or health anxiety. The context in which it is given matters. For example, someone might choose to eat a simple rather than a complex carbohydrate before a workout because it is digested more quickly and provides readily available energy. On its own, that is simply a nutrition choice.

The picture changes when food choices are driven primarily by fear. If someone is terrified of weight gain, rigidly follows food rules, eliminates entire food groups, carefully tracks macronutrients and micronutrients, or feels compelled to optimize every eating decision, the nutritional rationale may be serving a psychological function rather than a nutritional one. Nutrition science can become a way to justify restriction, reduce anxiety, reinforce compulsive behaviors, or create a sense of certainty and control.

There is a particular irony here. Someone may become intensely focused on optimizing nutrition to build muscle, improve athletic performance, or maximize health while simultaneously becoming so fearful of weight gain that eating becomes increasingly rigid and consuming. Hunger and satisfaction are ignored in favor of numbers. Meals are judged by whether they are "optimal" rather than whether they are nourishing or satisfying. Food becomes something to manage rather than something to enjoy. At that point, the pursuit of "optimal" nutrition has moved far away from health.

Health Includes Psychological Flexibility

Ironically, the relentless pursuit of perfect nutrition can undermine both mental and physical health. Chronic anxiety around food, social isolation, rigid restriction, and constant self-monitoring all carry consequences of their own. For most people, good health does not require micromanaging every macro- and micronutrient or eating with mathematical precision. Consistently following a varied and flexible pattern of eating is supported by far more evidence than striving for nutritional perfection.

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As a therapist, I often remind people that a healthy relationship with food includes flexibility. It leaves room for enjoyment, culture, connection, and trust in our bodies. Health isn't defined by how perfectly we eat. It's reflected in whether food supports our lives rather than consumes them.

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