Psychological Effects of Weight-Loss Drugs Underexplored

What to know about the weight–mood connection, and why experts are concerned about the lack of research on the effect of weight-loss drugs on mood disorders.
Psychological Effects of Weight-Loss Drugs Underexplored
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Jennifer Galardi
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While the U.S. Food and Drug Administration (FDA) gave a tentative green light to popular weight-loss drugs like Ozempic and Wegovy, some still claim that the glucagon-like peptide-1 (GLP-1) receptor agonist drugs are responsible for poor mental health outcomes.
Despite the drugs’ spike in use by millions who want to shed pounds, questions linger about their impact on mental health and possible links to depression and suicidal behavior that experts argue remain underexplored.

The Ozempic–Suicide Link

Contradicting anecdotal claims, a major study funded by the National Institutes of Health (NIH) found no link between semaglutide, the active ingredient in Ozempic and Wegovy, and suicidal thoughts.
Published in Nature Medicine, the analysis showed semaglutide is associated with a 49 percent to 73 percent lower risk of first-time or recurring suicidal ideations compared to other obesity or diabetes medications.

While supporting the NIH findings, the FDA cautioned that it could not definitively rule out a small risk based on reviews of suicidal-thought/action reports in the FDA Adverse Event Reporting System (FAERS) and said it would continue investigating the issue.

There is also some evidence that suggests that GLP-1 medications such as tirzepatide, semaglutide, dulaglutide, and exenatide correlate with a lower likelihood of anxiety and depression diagnoses.
However, European Union (EU) regulators are probing suicidal-ideation reports from GLP-1 patients after an Icelandic agency flagged cases involving liraglutide and semaglutide in July 2023. Liraglutide, another GLP-1 agonist—commonly known as Saxenda and the drug subject to the EU’s investigation—appears less effective in managing blood sugar levels and reducing caloric intake. It is also costlier than semaglutide products.
For now, depression isn’t listed as an Ozempic side effect. Still, Wegovy cautions health care providers to monitor patients for depression and to “avoid” prescribing it to patients with a history of suicidal ideation or attempts. Depression or thoughts of suicide are also listed as side effects on Wegovy’s website. Patients are advised to talk to their doctor if they experience sudden changes in mood, behaviors, and feelings.

Conflicting Results

As the popularity of weight-loss drugs like Ozempic and Wegovy soars, evidence points to concerning psychological impacts that are only beginning to surface.
One study in Brain Sciences analyzed social media posts on Reddit, YouTube, and TikTok to assess perceived connections between GLP-1 receptor agonists like Ozempic and Wegovy and mental health issues like depression, anxiety, insomnia, and other addictive behaviors, including shopping. Many posts highlighted the interrelation between excessive weight and feelings of worthlessness, guilt, and stigma, implying that weight-loss drugs alleviated these emotions. However, others claimed the drugs dysregulated hormones, causing severe mood swings and enhanced fear of food.

While self-reported symptoms on social media don’t definitively prove impacts, the analysis provides insights requiring further study.

Alexis Conason, a clinical psychologist and certified eating disorder specialist-consultant, is concerned this renewed attention to weight loss presupposes eating disorders. Ms. Conason told The Epoch Times that some patients are exhibiting “atypical anorexia”—meeting anorexia criteria but having average weight or being slightly overweight—while taking the drugs. These patients are consuming minimal calories a day, “sometimes reporting lightheadedness, fainting episodes, [and other] health abnormalities,” she said. Ms. Conason claims those with atypical anorexia have just as severe medical complications as people with low-weight anorexia, but medical professionals have not widely recognized it.

A 2016 study found no significant differences between atypical and typical anorexia in terms of binge eating, purging, psychiatric issues, or suicidal ideation.

Given the complex relationship between weight loss and mental health and the novelty of these drugs, more research into psychological effects is ongoing.

Dr. Shebani Sethi, a clinical associate professor at Stanford Medicine’s School of Psychiatric and Behavioral Sciences, founded the Metabolic Psychiatry Clinical program, a first-of-its-kind clinical program to address this intricate relationship. The Metabolic Psychiatry Clinic examines the intersection of metabolic health and mental health, combining the principles of biological psychiatry and a metabolic perspective that emphasizes optimizing metabolic functioning, including improving inflammation, energy pathways, and insulin resistance.

Dr. Sethi doesn’t rule out the use of weight-loss drugs and uses them in her practice. However, she believes that careful prescribing is a must and that GLP-1 weight-loss medications are not for everyone.

Potential Conflicts of Interest

A 2023 Reuters analysis found Novo Nordisk, the manufacturer of Ozempic and other weight-loss and diabetes drugs, paid U.S. obesity doctors at least $25.8 million over a decade in fees and expenses related to its weight-loss drugs.

The company told investors its target market comprises 764 million obese people globally, with the United States being its most lucrative region, according to the report.

Over 42 percent of American adults are obese, and these drugs frequently command the highest prices worldwide, with Novo Nordisk charging U.S. customers $1,300 per month for weekly injections.

Novo Nordisk told Reuters its relationships with doctors extend beyond marketing, stressing its responsibility “to do more than supply the right medicine” and that it collaborates with medical professionals “to conduct research and educate and raise awareness about obesity, a condition that has long been underrecognized and misunderstood.”

Dr. Jamy Ard of Wake Forest University School of Medicine in Winston-Salem, North Carolina, the incoming president of The Obesity Society, has accepted over $200,000 from Novo Nordisk, according to the Reuters analysis. He said The Obesity Society would be transparent about conflicts of interest but that “such conflicts are hard to avoid in the relatively small obesity field.”

However, Dr. Arthur Kellermann, an epidemiologist and former dean of the Uniformed Services University of Health Sciences, the U.S. military’s medical school, described six- or seven-figure checks from pharmaceutical companies to medical professionals “morally and ethically way over the line,” Reuters reported.

The Long-Term Mental Health Trade-Off of Weight-Loss Drugs

Establishing a clear, causal link between metabolic diseases, depression, and medications is difficult due to their possible reciprocal relationship, shared underlying mechanisms, and individual differences, according to the study published in Brain Sciences.

For instance, an Ozempic patient losing weight may have a preexisting mental illness that weight loss won’t alleviate. However, for others, anxiety or depression may be soothed by the self-esteem boost accompanying weight loss.

Experts agree that prescribing weight-loss drugs and monitoring mental health must be individualized.

“Mental health conditions can be complex and are not homogenous,” Dr. Sethi told The Epoch Times. “For some, weight loss’ bodily effects, while positive for metabolic dysfunction, don’t necessarily improve mental health.” Each patient’s reactions to the drugs are unique, she added.

Some people may gain excess weight as a way to create a physical barrier that makes them feel safer after experiencing psychological trauma—for example, a rape victim staying heavier to avoid unwanted attention. They may have been using the extra weight as a subconscious coping mechanism, and forcing weight loss before dealing with the underlying trauma could make them feel unsafe or distressed. Because of this, if a person isn’t aware of the complex relationship between their body and mental health, rapid weight loss can sometimes have unintended adverse psychological effects, Dr. Sethi said.

Other experts worry about the psychological toll these new weight-loss drugs may have on a culture already obsessed with dieting.

Ms. Conason said there might be an overlap with post-bariatric surgery’s elevated suicide risk one to two years out when weight regain sets in after initial euphoria, according to some research. She speculates the same consequences may result from those who regain weight after discontinuing weight-loss drugs. “People have so much hope for weight loss,” Ms. Conason said, and they experience the alleviation of weight stigma that comes with that.

“They’re treated better, they often feel better, they’re getting tons of compliments,” she continued. She believes hopelessness can set in when the weight returns. “It can take a toll on mental health.”

Research has suggested that long-term, possibly lifelong, drug use is needed to maintain weight loss, as getting off a semaglutide triggers hunger’s return, hindering sustainable results.
Jennifer Galardi
Jennifer Galardi
Author
Jennifer Galardi spent decades as a health and wellness expert before receiving a masters in Public Policy from Pepperdine University. She writes about health, culture, and policy and her work can be seen in The New York Sun, The Blaze, and The American Spectator, along with countless health outlets.
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