Ketogenic diet could aid anorexia, but needs trials

A small study suggests the ketogenic diet may help people with anorexia nervosa by changing energy-related signaling in the brain. The finding is early and not a substitute for standard care, but it is enough to justify careful, supervised research—especially

On paper, the idea sounds wrong—almost cruel. Anorexia nervosa is a psychiatric condition defined by a compulsion to restrict food. So when scientists propose that the ketogenic diet. a restrictive eating plan most associated with rapid weight loss. could be a treatment for the disorder. it lands like a dare.

That reaction is understandable. Science depends on evidence and consensus, and contrarian theories often burn out without delivering anything reliable. Still, dismissing an idea simply because it is uncomfortable can be its own shortcut.

This week’s cover story points to a rare exception: after following a ketogenic diet. people with anorexia nervosa appear to improve. though the evidence is limited to a small study. The mechanism proposed is also striking. Researchers think keto may correct “haywire” energy release in brain cells. which could reduce anxiety—and with it. the compulsion to restrict food.

Even in its early form. the finding lands in a place where patients and clinicians have every reason to be cautious and every reason to be hungry for alternatives. At present, one-third of those with anorexia nervosa don’t recover from standard treatment. The disorder also carries the highest mortality rate of any psychiatric condition.

One-third failing to recover is not a small margin. It means the current system leaves too many people still in danger, even after getting care. And mortality rates are not abstract statistics when the stakes are measured in lives.

There’s another reason this story cuts deeper than the diet itself. The ketogenic diet has become politically and culturally tangled. and supporting it as a potential mental-health treatment can put researchers in the same rhetorical orbit as high-profile figures whose health claims have drawn sharp criticism. The text notes alignment with Robert F. Kennedy Jr, described here as the controversial US health secretary, including his claim—made without evidence—that vaccines cause autism.

That is where the conversation turns tense, because people often treat association as proof. But the central question is different: does the science hold on its own?

The cover story argues it does not deserve a reflex dismissal. Multiple lines of evidence are presented for keto’s potential mental-health benefits beyond anorexia. with the diet described as holding promise for blunting symptoms of conditions from severe depression to schizophrenia. That broader framing matters because it suggests the anorexia hypothesis may not be a lone oddity.

At the same time. the text is explicit about what comes next: the research is early. and the ketogenic diet should be used for anorexia only under medical supervision. as larger trials are needed. That caution is not a minor footnote. It is the boundary between a hopeful signal and a dangerous trend.

There is a straightforward way to read the contradiction in all of this. The same diet that can look absurd in the context of a disorder defined by food restriction is also showing early signs of reducing the anxiety and compulsive behavior that drive that restriction. And the same public controversies that can muddy the message shouldn’t be allowed to erase the difference between careful clinical study and unsupported health advice.

As the story puts it. “It is a mistake to think an idea is bad simply because people who have bad ideas support it.” In practice. that means taking the science seriously—without letting it become a shortcut for patients who are desperate. or a talking point for those who want headlines without evidence.

For now, the most responsible takeaway is not that keto should replace standard care. It is that. for a condition where one-third don’t recover and where mortality is devastatingly high. early evidence is enough to earn bigger. better trials—done carefully. watched closely. and measured against outcomes that matter.

ketogenic diet anorexia nervosa psychiatric treatment anxiety brain energy signaling medical supervision clinical trials mortality rate depression schizophrenia