Antidepressants side effects weight gain: Antidepressants, widely used to manage mental health conditions, can affect weight, heart rate, and blood pressure, though these changes differ depending on the specific drug. Researchers from King’s College London’s Institute of Psychiatry, Psychology & Neuroscience (IoPPN) conducted one of the most extensive reviews to date, comparing the physical effects of 30 antidepressants. The findings, published in The Lancet, draw on data from over 150 clinical trials involving 58,534 participants who took either antidepressants or placebos for eight weeks.This Common Antidepressant May Quietly Raise Your Blood PressureThe researchers observed the biggest differences in weight, heart rate, and blood pressure among those taking antidepressants. They said the results, published in The Lancet, are meant to help patients make informed decisions but advised anyone with concerns to consult their doctor.Researchers examined how these medications affected patients during the first eight weeks of treatment. Some antidepressants led to weight gains of up to 2 kilograms, while others caused changes in heart rate of as much as 21 beats per minute.What Is Sertraline?Sertraline, sold under the brand name Zoloft, is a prescription antidepressant medication that belongs to the class of drugs known as selective serotonin reuptake inhibitors (SSRIs). It works by increasing the levels of serotonin, a natural chemical in the brain that helps regulate mood. Between 2024 and 2025, about 92.6 million antidepressant prescriptions were issued to roughly 8.89 million people in England, according to data from the NHS Business Services Authority (NHSBSA). Among them, sertraline, taken by an estimated 2.9 million patients, was associated with slight weight loss, averaging about 0.76 kilograms, and a small drop in heart rate. However, it also showed a modest rise in both systolic and diastolic blood pressure.Sertraline Leads To Increased Blood pressureAn increase in blood pressure can raise the risk of stroke, the researchers noted. However, they also pointed out that the study’s main limitation was its short duration, as it only examined the first eight weeks of treatment. They said more research is needed to understand the longer-term effects of these medications.Dr. Toby Pillinger, lead researcher and consultant psychiatrist at King’s College London, stressed that the findings are not intended to discourage antidepressant use. Instead, they aim to promote personalised treatment and encourage shared decision-making between doctors and patients, empowering individuals to make more informed choices about their care.Which Antidepressant Should I Opt For?The most commonly prescribed antidepressants—SSRIs like paroxetine, citalopram, escitalopram, and sertraline, generally showed fewer physical side effects. Professor Andrea Cipriani from the University of Oxford said it is “impossible” to determine how many of the millions taking antidepressants might benefit from a different medication.He noted that a focus on “generic, cheap medications” has led to 85% of antidepressant prescriptions in the UK being for just three SSRIs: citalopram, sertraline, and fluoxetine. According to Cipriani, applying the findings from this study could drastically reduce that 85% figure, allowing more patients to access treatments better suited to their needs.The research team is also developing a free online tool to help doctors and patients make more informed choices about which antidepressant to use.
Email
Google
Facebook Email Google Facebook