Ozempic can cause side effects ranging from mild, common ones like nausea to severe issues involving the kidneys and gallbladder. That’s why doctors discuss these potential risks with patients to help them understand the drug’s effects. One unanticipated side effect that is often overlooked during consultations is mood disturbances. Some Reddit users report feeling persistent sadness and losing interest in activities they once enjoyed during treatment. Does Ozempic cause depression and other psychological side effects? Read this article to learn about the various mechanisms through which semaglutide may trigger a range of responses, including mood changes.
What Is Ozempic?
Ozempic contains the active ingredient semaglutide, which is known for promoting significant weight loss. It works by mimicking the body-produced glucagon-like peptide 1 (GLP-1) hormone to control blood sugar levels and suppress appetite.
While it’s known to cause side effects, one unexpected health complaint among users is depression. It’s not a documented adverse effect, but some experts believe there may be a slight risk for certain patients.
Ozempic’s effects vary from person to person, so understanding its potential risks can help you prepare for any challenges that may arise during your treatment.
Does Ozempic Cause Depression?
Clinical trials haven’t confirmed a direct link between Ozempic and depression, although some users report persistent feelings of sadness during treatment. Depression hasn’t shown up as a common side effect, but it may be an indirect reaction.
In clinical trials, researchers have observed that Ozempic may increase the risk of hypoglycemia, or severe low blood sugar levels, when used in combination with another medication that has a glucose-lowering effect, such as a sulfonylurea or insulin. When sugar levels are too low, some of the symptoms you may experience are:
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- Dizziness or lightheadedness
- Headache
- Confusion or drowsiness
- Anxiety, irritability, or mood changes
- Feeling jittery
Therefore, one reason semaglutide may indirectly cause depression is due to hypoglycemia. If you notice any changes in your mood while taking Ozempic, consult your doctor immediately. They can determine whether the medication or an underlying health condition causes it.
What Is Known About Ozempic’s Link to Depression
GLP-1 influences regions of the brain that regulate emotions, but research on its impact on mood is limited. In an animal study, GLP-1 agonists, including Ozempic, triggered anxiety in rodents as soon as the treatment started. This feeling subsided as the treatment continued, and anxiety was later replaced with a positive mood. Behaviors linked to depression consequently improved. Scientists have yet to establish a direct causal link between Ozempic and depression.
Meanwhile, the European Medicines Agency, which oversees medication safety in Europe, is reviewing data on the potential connection between suicidal thoughts and thoughts of self-harm and GLP-1 drugs, including Ozempic, Saxenda, and Wegovy. This decision was made after authorities received 150 reports of possible psychiatric side effects associated with Ozempic, Saxenda, and Wegovy. Currently, depression is considered a rare side effect.
Possible Mechanisms — How Ozempic Might Influence Mood
Based on existing data, there are three primary mechanisms by which semaglutide may induce mood changes.
1. Alters the Activity in Dopamine-producing Brain Cells
Dopamine is a neurochemical associated with reward and pleasure. In an animal study, researchers found that changes in the brain’s reward circuitry after a semaglutide treatment may lead to mood changes.
Researchers trained mice to lick sugar water in response to a 5-second sound cue. After the mice learned the task, the researchers injected a higher dose and a lower dose of semaglutide in the subjects to compare their dopamine activity.
Mice that were injected with a higher dose of semaglutide licked less and collected fewer sugar rewards. Meanwhile, a lower drug dose neither affected the mice’s dopamine activity nor their sugar intake.
Researchers concluded that semaglutide may alter brain activity associated with the experience of pleasure. This change in reward circuitry could lead to mood disturbances in humans; however, further research is needed to confirm this claim.
2. Hormonal and Metabolic Changes
Ozempic promotes weight loss, which can affect hormonal levels, particularly in women. The fat cells, or adipose tissue, store and process sex hormones, including estrogen. If you take Ozempic, you can lose fat, which may consequently lower the amount of estrogen circulating in your body. The result could lead to a hormonal imbalance and mood changes.
3. Psychological Stress of Side Effects
Another reason Ozempic may cause depression is the mental stress of managing side effects while balancing responsibilities such as work and household tasks. Nausea, fatigue, diarrhea, and other side effects may increase hopelessness or reduce motivation, especially for those already struggling.
4. Underlying Vulnerability
People with pre-existing depression may be more susceptible to mood changes if they take Ozempic. A 54-year-old female who had a history of depression reported feeling more anxious and irritable after using semaglutide for four weeks.
She also developed sleep disturbances and began to lose interest in activities she previously enjoyed — key signs of depression. Researchers weren’t sure whether it was the drug that triggered these mood disturbances. They advised the patient to stop semaglutide, and after a few weeks, her mood symptoms improved.
It takes more research to establish the connection between Ozempic and depression.
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Other Reported Mental Health & Mood-Related Side Effects
In addition to depression, some Reddit users reported experiencing mood swings and other psychological side effects, including:
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- Anxiety
- Stress
- Brain fog
- Anger
- Sadness
- Losing their will to live
- Panic attack
- Suicidal thoughts and ideation
- Food noise or obsessive thoughts about food
- Anhedonia or loss of pleasure from things they previously found enjoyable
Could Ozempic Improve Depression for Some People?
It appears Ozempic may also improve depression for some users.
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- One Reddit user said that Ozempic has helped them escape a lifetime of depression and anxiety. They became more confident and happier as a result of taking the drug.
- Another user shared that they could walk without losing their breath, which promoted positive feelings about their health.
- With several pounds lost, one user reported that they could now run and lift weights every day, which significantly boosted their energy levels. Their mental health was also the best it’s ever been.
- One user also shared that losing weight with Ozempic boosted their energy throughout the day. They were able to complete house chores without getting tired and needing breaks. What’s more impressive is that their addiction to nicotine and alcohol had naturally stopped.
People have varied experiences with Ozempic. Some report mild symptoms and improved mental health, while others experience mood changes and depressive symptoms that affect daily life.
Signs Ozempic Is Affecting Your Mood
Some signs Ozempic may be affecting your mood include:
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- Persistent sadness
- Irritability
- Anxiety
- Brain fog
- Sleep problems
These symptoms may be temporary and could be a sign that your body is adjusting to the changes in blood sugar and appetite. Keep a health diary and list all the symptoms you experience, including when they start and how long they last. Share your observations with your doctor on your next visit so they can address any potential risks.
What to Do If You Notice Depression or Mood Changes
If the mood swings persist after a few weeks, become overwhelming, or start to interfere with your daily life, visit your doctor so they can check for underlying depression.
Your doctor may recommend the following options to improve mood changes.
Your doctor will adjust your treatment plan to suit your current physical and mental health needs.
Ozempic and Depression: More Research Is Needed
Depression isn’t a well-established side effect of semaglutide, but the risk can’t be ruled out. Currently, researchers consider depression to be a rare side effect of Ozempic. If you have a history of not only depression but also other mental health conditions, make sure to inform your doctor before treatment. It will help them assess whether giving a prescription is the right decision for you.
Frequently Asked Questions
Original Publish Date: 1/14/2025 – Updated 8/17/2025
