Bipolar Medication Weight Gain: What Helps

Weight gain is a common side effect of many bipolar medications. Although it can’t always be prevented, there are strategies to manage it.

Key Takeaways

• Certain bipolar medications commonly increase appetite and alter your metabolism.
• Stopping medication on your own to avoid weight gain can trigger a severe relapse.
• Mindful eating and regular weekly exercise can help limit weight gain.
• Hearing how community members navigate these challenges can offer practical support and show you that you’re not alone.

Managing weight can be a major challenge for people taking bipolar medications, as common mood stabilizers and second-generation antipsychotics often trigger appetite changes and metabolic shifts.

While research shows nearly 1 in 3 adults are overweight and more than 2 in 5 have obesity, adding medication-induced weight gain into the mix creates unique risks. According to the Centers for Disease Control and Prevention (CDC), carrying extra weight elevates the risk of type 2 diabetes, high blood pressure, and cardiovascular disease — making proactive weight management a critical part of bipolar care.

Importantly, in bipolar, weight gain can also be a major obstacle to treatment adherence — more than 60 percent of cases where people stop taking their prescribed medication are due to unwanted weight gain. 

Yet experts remain uncertain as to why many common bipolar medications can lead to weight gain.

Even without a single clear cause, understanding the potential biological drivers can help you take control. Combining practical lifestyle changes, doctor-guided treatment adjustments, and real community experiences makes managing this side effect far more achievable.

Why Bipolar Medication Can Cause Weight Gain

David Allison, PhD, points out that while the exact reasons antipsychotic drugs induce weight gain are not fully known, “in some cases,” he says, “we have a good idea.” Renowned in the field of obesity research, Dr. Allison serves as dean of the Indiana University School of Public Health in Bloomington.

Researchers suspect that weight gain happens, in part, through the drugs’ effects on substances called catecholamines — brain chemicals that include adrenaline and noradrenaline. Acting as hormones, these substances affect blood sugar levels and metabolism.

These hormones affect both food intake and energy expenditure, Allison says. “Many people think, and I agree, that the effects are related mainly to food intake,” he explains. In simpler terms, the side effects of bipolar medication can make some people eat more than their bodies need.

A literature review published in the International Journal of Bipolar Disorders notes other complex effects of bipolar medication on a person’s metabolism. They can affect how the body processes glucose (sugars) and lipids (fats), potentially leading to higher blood glucose levels and more fat storage. 

The medications can also cause insulin resistance and raise the risk of metabolic syndrome. Add to this a more sedentary lifestyle and, for some, a genetic predisposition towards obesity, and the risk of weight gain can skyrocket for those with bipolar. 

Which Bipolar Medications Are Linked to Weight Gain?

While weight gain is a recognized side effect across psychiatric care, certain treatment options carry a significantly higher likelihood of causing unwanted pounds.

“In psychiatry, many medications have the potential to cause weight gain,” says Christoph Correll, MD, professor of psychiatry at The Zucker School of Medicine at Hofstra/Northwell in Hempstead, New York, whose research focuses on the side effects of antipsychotic medications.

 “And among all psychiatric medications, the two classes used most in bipolar disorder — mood stabilizers and the new generation antipsychotics — are among the ones that cause the most weight gain,” says Dr. Correll.

Do Antipsychotics Cause Weight Gain?

Yes. Strong clinical evidence shows that atypical antipsychotics (also called second-generation antipsychotics, or SGAs) frequently cause weight gain, often beginning within the first few months of treatment.

In a seminal joint consensus statement, major medical organizations — including the American Diabetes Association (ADA) and the American Psychiatric Association (APA) — established the need for doctors to regularly screen patients on SGAs for rapid weight gain, elevated blood sugar, and harmful lipid profiles. Research highlighted in the statement shows that medication-related weight gain can continue over the long term rather than leveling off after the first year.

Do Mood Stabilizers Cause Weight Gain?

Yes — although antipsychotics are the main drug class that leads to weight gain in bipolar, mood stabilizers can also have this effect. Research cited in the International Journal of Bipolar Disorders suggests that valproate and lithium, in particular, are the culprits most likely to cause unwanted weight gain.

Lamotrigine, on the other hand, is widely considered to have a minimal impact on weight gain, and topiramate has been linked to weight loss in some studies.

Do All Bipolar Medications Cause Weight Gain?

No, not all bipolar medications carry an equal risk of weight gain. For example, in the antipsychotics category, olanzapine and clozapine are the most likely to cause this unwanted side effect, per the review published in the International Journal of Bipolar Disorders. 

The authors of the review note that other antipsychotics carry a moderate risk, such as:

• quetiapine
• risperidone 
• paliperidone 

Other antipsychotics yet have a relatively lower risk of causing weight gain, such as:

• aripiprazole
• cariprazine 
• lurasidone
• ziprasidone

Research suggests this risk may rise, however, if these medications are used in the long term.

Finally, the literature review found that lurasidone is weight-neutral or, in some cases, even associated with weight loss.

How to Manage Weight Gain From Bipolar Medication

Correll points out that nearly every person with bipolar disorder — especially those taking antipsychotic medications — runs the risk of gaining weight, and there are no easy answers. 

But once you’ve accepted that taking certain prescription drugs is necessary for stability, he says it’s up to you to take whatever steps you can to minimize those side effects. Even if the weight gain can’t be eliminated, it can often be contained.

Allison stresses that above all, the most important thing you can do is pay attention to what you eat and to exercise, with the support of cognitive behavioral modification.

While lifestyle changes are important, medical interventions can also play a key role. “Some drugs are popular and fairly effective for weight loss in general,” Allison notes. For instance, research quoted in the International Journal of Bipolar Disorders found that metformin helped reverse insulin resistance in treatment-resistant bipolar depression, improving clinical outcomes.

Food and Drink Changes That May Help

Below are a few doctors’ recommendations to help you manage medication-induced weight.

• Cut back on soda, juices, and sugary drinks. Liquid calories don’t fill you up in the same way certain foods do, Correll explains, so they just lead to extra caloric intake. Water or unsweetened tea is a better option.
• Chew and eat slowly. When you eat, it’s good to be mindful of your food intake and eat slowly to better register when you are full. “Wait before taking seconds,” Correll advises. An increased appetite may cause you to eat too fast or overeat.

How Exercise Supports Weight and Mood Stability

Experts emphasize that staying active plays a key role in managing both physical health and emotional well-being. “Getting regular, moderate exercise may help to minimize weight gain and can have positive effects on both mood and health, independent of body weight,” Allison says.

Correll agrees. Try walking for at least 30 minutes a day, he says, pointing out that even if you break it up into three 10-minute chunks, this can reduce your risk for type 2 diabetes. 

You can also create a reward system for yourself that helps you reach your daily targets. “Make a rule that you can only watch a certain television show if you use a stair-stepper or stationary bicycle for at least 30 minutes before the show begins,” Correll suggests. You might place the exercise machine in front of the TV and use it during the show, as well, he says.

Overall, the U.S. Department of Health and Human Services recommends adults aim for at least 150 minutes of moderate aerobic activity — or 75 minutes of vigorous activity — per week, or an equivalent combination of both.

Coping With the Emotional Side of Medication Weight Gain

Weight changes related to bipolar medication can be upsetting. Many people find themselves in a complicated trade-off situation, where they must choose mood stability at the expense of appearance or weight loss, while others describe frustration with appetite and the inability to lose weight. 

In turn, the distress of weight gain may have negative impacts on mood and energy levels, leaving you feeling vulnerable and amplifying negative self-talk, anxiety, paranoia, or even psychosis in some cases. 

To break this negative feedback loop, try to remember that you are important and you deserve to be healthy and feel happy. Regaining self-worth is often the first step in the weight management journey. Some people with psychosis describe this themselves in one study. 

Talk to Your Doctor About Medication and Weight Gain

Managing side effects is a team effort. You don’t have to figure this out on your own — your doctor is there to help you protect both your mental health and your physical well-being. Here’s how to work together with your provider during your next visit:

• Share your personal track record. Keep a simple log of your weight changes, appetite shifts, or sudden cravings. Bringing real information to your visit helps your doctor see the exact patterns you are experiencing.
• Ask about medical options. Wondering if another option might work? Ask your doctor if a lower-risk medication could work just as well for you, or if adding a temporary weight loss medication could help balance things out. 
• Ask for expert support. Don’t hesitate to ask for a referral to a dietitian who understands psychiatric care or a specialist who focuses on metabolic health.

Because side effects are possible with almost any medication, your treatment should always do more to help you than to cause added stress. Working closely with your primary care doctor, psychiatrist, or weight specialist can help you decide which options make the most sense for your health goals.

FAQ

How soon does weight gain start after taking bipolar medication?

Weight gain can start very soon after you begin treatment — typically anywhere from a few weeks to a few months after starting the medication. As researchers note, the exact timing varies depending on the specific medication you’re taking and how your body metabolizes it.

Does medication-related weight gain eventually stop?

Medication-related weight gain may eventually slow down, but when that happens may be difficult to predict. For example, a meta-analysis of randomized controlled trials notes that with antipsychotics, most weight gain tends to occur early in treatment, then slows down over time, eventually reaching a plateau. But the timing and particulars can vary significantly between medications and individuals.

Can bipolar medication make you feel hungrier?

Yes, bipolar medication can make some people feel hungrier. This likely happens because some medicines affect appetite, food cravings, and metabolism, per research. It does not happen to everyone, and the likelihood varies across medications and from person to person.

Can medication weight gain affect blood sugar or cholesterol?

Yes, medication-related weight gain can affect blood sugar and cholesterol, which can raise your risk of diabetes and heart disease over time. According to one meta-analysis, some antipsychotic medicines seem to affect glucose and fat metabolism directly, too, so changes in blood sugar or cholesterol can sometimes appear even before a person gains much weight.

__________________________

Exploring real-life experiences can be insightful, especially when navigating the challenges of weight gain due to bipolar medications. 

We connected with our bipolar community to gather their personal stories and strategies. We asked about their experiences with weight gain while taking prescription medications and what they did to manage it. Here’s what they had to say.

Editor’s note: Comments have been edited for length and clarity.

Managing Cravings and Dietary Adjustments

“My 10-year-old son experienced severe weight gain and mania while on anticonvulsant medication. So, with professional approval, I slowly tapered it from his ‘cocktail.’ He had gained 30 pounds in three months, which is frightening in a child with a high metabolism. He constantly goes through cyclical food cravings where he can’t get enough carbs, and even gets demanding about having them. We keep little to no junk food in our home and allow him access to fresh fruits and veggies.”

— C.W., Rhode Island

“I gained a lot of weight when I began taking meds for bipolar disorder. I was hungry all the time and was basically a bottomless pit! Eventually, I asked to switch medications, which has seemed to help. I also changed the way I eat in an extreme way — to an organic-only macrobiotic diet. Whole grains fill me up much longer than animal protein does.”

— B.C., Michigan

Combining Physical Activity With Self-Acceptance

“At 19, I was diagnosed with bipolar disorder. The meds they put me on made me balloon up to 350 pounds. I went off my meds to lose the weight, which I did, but ended up having another psychotic break. After being hospitalized a second time and put back on meds, I got a gym membership and began working out every morning. I’ve managed to maintain my healthier weight for three months so far.”

— Name Withheld, Washington

“I gained 30 pounds after several months of being on bipolar medications, 10 pounds of which I’ve lost by working out at a gym. I continue to work out at Curves and practice portion control. While I would love to be back at my pre-medication size, I have learned to accept myself at my current weight. I have concluded that having stable moods is better than being on a mood rollercoaster — even if it means not being thin.”

— L.R., Connecticut

Navigating Long-Term Metabolic Challenges and Programs

“Since being diagnosed with bipolar 2, I have tried different medications and ended up on lithium and antidepressants. I have gained about 30 pounds on my medication and feel better, but I have no desire to exercise. I eat well, but I can’t lose the weight.”

— L.S., California

“Have I experienced weight gain? When have I not gained? During my first hospitalization, I gained 20 pounds in four weeks on a medication used for mania. I continued taking this medicine for three years and gained an additional 40 pounds. For a few years, I wasn’t ready to address my weight. But then I joined Weight Watchers and lost 14 pounds. Without trying to plug the program, it taught me what I should and shouldn’t be eating on a daily basis. Plus, I found out how much exercise helps me — even just 20 minutes on the treadmill is better than nothing, and it does wonders for my depression and anxiety. I also have two dogs who help me get out on long walks. I’m not at my goal weight yet, but slowly, with persistence, I will get there — one day at a time!”

— J.H., Georgia

“I know it’s the medication, but what can I do about it? While in the hospital, I was briefly taken off my meds and lost 30 pounds. Then I was placed back on them and regained the weight in a few weeks. I am obese. I take medications now for my bipolar, cholesterol, and triglycerides, and my fasting glucose is slightly elevated. I diet, but my brain says ‘I am hungry’ more than it used to. I walk for exercise. I guess I’m just glad my psychiatric medications work.”

— B.R., Kentucky

“Several years ago, I experienced a 50-pound weight gain on one of my medications — a mood stabilizer. My weight gain triggered my genetic predisposition to diabetes. I was able to stop gaining weight by being on a diabetic diet for many years. Once taken off that initial mood stabilizer and navigating several other medications, I was able to lose 25 pounds in about nine months. Since my medications are almost balanced, I hope to start walking at least three times a week to lose more weight and feel better.”

— Name Withheld, California

Additional reporting by Ana Sandoiu.

Editorial Sources and Fact-Checking

bpHope follows strict sourcing guidelines to ensure the accuracy of its content, as outlined in our editorial policy. We use only trustworthy sources, including peer-reviewed studies, board-certified medical experts, people with lived experience, and information from top institutions.

UPDATED: Printed as “The push-pull of weight gain”, Summer 2005