New Study Reveals Antidepressants That Cause the Most Weight Gain

Antidepressants are commonly prescribed medications for treating mental health conditions such as depression and anxiety. However, one common side effect that many people experience is weight gain. This can deter some individuals from taking their prescribed medication, leading to potential gaps in treatment. A new study has delved into the specifics of which antidepressants are more likely than others to cause weight gain, providing valuable insights for both medical professionals and patients alike. 

The study, published in the journal Annals of Internal Medicine, analyzed electronic health records of over 183,000 individuals aged 18 to 80 in the United States who were starting antidepressants for the first time. Over a period of 24 months, the researchers monitored the participants’ weight changes to determine the impact of different antidepressants.

The results of the study compared various antidepressants to Zoloft (sertraline), which was the most commonly prescribed antidepressant among the participants. After six months, individuals taking Zoloft gained half a pound on average. Those on Prozac (fluoxetine) showed a similar risk of weight gain, while users of Paxil (paroxetine), Cymbalta (duloxetine), and Celexa (citalopram) experienced slightly more weight gain. However, individuals on Lexapro (escitalopram) showed the most significant weight gain, with an average of 1.4 pounds at six months, which increased to 3.6 pounds after two years. On the other hand, individuals taking Wellbutrin (bupropion) did not experience weight gain at six months but gained approximately a pound after 24 months.

The lead author of the study, Joshua Petimar, ScD, emphasized the importance of understanding the potential side effects of antidepressants, particularly weight gain. He stated, “Patients who experience unwanted weight gain as a side effect of antidepressants may be less likely to adhere to their medication. We wanted to compare weight gain across common first-line antidepressants so that clinicians can make the best overall decision for the health of their patients.”

The underlying mechanism behind why some antidepressants lead to weight gain is not fully understood. However, experts have proposed several explanations for this phenomenon.

One theory suggests that the increase in the neurotransmitter serotonin, which plays a crucial role in regulating mood, may contribute to weight gain. Selective serotonin reuptake inhibitors (SSRIs) such as Celexa, Lexapro, Prozac, and Paxil raise serotonin levels, as do histamine receptors found in some tricyclic antidepressants. Markus Ploesser, MD, a psychiatrist, noted that heightened serotonin levels can stimulate appetite and cravings for foods high in carbohydrates.

Additionally, research indicates that antidepressants may impact metabolism by slowing down the metabolic rate. They could also influence hormones like insulin, promote fat storage, and contribute to reduced physical activity, resulting in weight gain over time.

While some individuals may shed the extra weight once they discontinue the antidepressants, certain long-term metabolic changes may persist. Ploesser explained, “The extent of weight loss after discontinuation varies among individuals and depends on factors like duration of medication use, lifestyle, and metabolic alterations.”

Experts stress the importance of considering various factors, including weight gain, when selecting an antidepressant for a patient.

Weight gain associated with antidepressants can exacerbate underlying health conditions such as diabetes, hypertension, and cardiovascular disease, according to Ploesser. Furthermore, weight gain can negatively impact an individual’s self-esteem and worsen mental health symptoms, including depression.

Managing weight while dealing with depression can add to the burden for individuals, potentially diminishing the efficacy of treatment. Ploesser emphasized the need for healthcare providers to address these concerns proactively with their patients.

However, experts caution that weight gain should not be the sole consideration when choosing an antidepressant. The efficacy of each class of antidepressants varies, so medical professionals must evaluate the individual’s symptoms, medical history, and specific condition before prescribing a medication.

Individuals with certain medical conditions or histories, such as seizures, eating disorders, or substance use disorders, may not be suitable candidates for certain antidepressants. Ploesser noted, “Some individuals may experience side effects like anxiety, insomnia, and increased risk of hypertension with certain medications, which should be taken into account during prescription.”

Despite the potential for weight gain, there are numerous antidepressant options available, each with unique mechanisms of action. Dr. Frances Javier, a psychiatrist, highlighted the diversity in antidepressants and how they can be tailored to an individual’s needs. She emphasized the importance of seeking mental health treatment despite concerns about weight gain, as untreated mental health conditions can have severe consequences.

It is crucial for individuals to discuss their concerns and preferences with their healthcare providers to find the best-suited treatment plan for their mental health needs.DeFi Daily News offers more trending articles and information on mental health and wellness topics to stay informed and empowered in your health journey.