unilad homepage
  • News
    • UK News
    • US News
    • World News
    • Crime
    • Health
    • Money
    • Sport
    • Travel
  • Film and TV
    • Netflix
  • Music
  • Tech
  • Features
  • Celebrity
  • Politics
  • Advertise
  • Terms
  • Privacy & Cookies
  • LADbible Group
  • LADbible
  • SPORTbible
  • GAMINGbible
  • Tyla
  • UNILAD Tech
  • FOODbible
  • License Our Content
  • About Us & Contact
  • Jobs
  • Latest
  • Archive
  • Topics A-Z
  • Authors
Facebook
Instagram
X
Threads
TikTok
YouTube
Submit Your Content
Study uncovers unexpected possible side effects of weight loss drugs

Home> News> Health

Published 15:10 10 Apr 2026 GMT+1

Study uncovers unexpected possible side effects of weight loss drugs

The researchers analyzed around 400,000 Reddit posts to find out what patients were saying

Britt Jones

Britt Jones

google discoverFollow us on Google Discover
Featured Image Credit: Getty Stock Images

Topics: Health, Ozempic, Mounjaro, Science

Britt Jones
Britt Jones

Advert

Advert

Advert

Researchers have identified what they believe could be lesser-known side effects of taking weight loss jabs, with 44 per cent of people polled, reporting at least one symptom.

Taking medications can always lead to a myriad of side effects, from things like headaches, to stomach woes, or even more serious issues that are rare to occur.

However, usually, it's well established in how medications react to people, thanks to them being on the market for so long that scientists can see how they affect individuals.

However, GLP-1s might be different, as they are only newly being used to lose weight by the masses.

Advert

This means we’re constantly finding out about the way they react to people, depending on many variables like age, weight, other medications, or medical issues.

But this new study might provide a little more clarity into what people can expect.

It found that 44 per cent of those analyzed experienced side effects, including period troubles (Getty Stock Images)
It found that 44 per cent of those analyzed experienced side effects, including period troubles (Getty Stock Images)

Researchers from Penn Engineering have revealed that semaglutide, found in Ozempic and Wegovy, as well as tirzepatide, used in Mounjaro and Zepbound, has been found to be linked to underreported issues users have experienced.

Having dredged through 400,000 Reddit posts from over 70,000 users within the last five years via AI to uncover what people have been saying about the weight loss drugs and type 2 diabetes management medications, new data emerged.

44 per cent of people noted effects like menstrual changes, chills, hot flashes, and more.

Most commonly reported in the posts were things like stomach issues and fatigue, then getting chills, hot flashes and finally the feeling of coming down with a fever.

While the study takes into consideration that weight loss drugs target an area of the brain that is responsible for hormone regulation (the hypothalamus), which could account for some problems - there needs to be more awareness on what it can cause in patients.

The study took information from Redditors (Getty Stock Images)
The study took information from Redditors (Getty Stock Images)

Lyle Ungar, a co-author on the study, said clinical trials 'generally identify the most dangerous side effects of drugs', but they 'fail to find what symptoms patients are most concerned about' which has been seen in a ‘large collection of posts’ citing side effects previously not commonly associated with the drugs.

Sharath Chandra Guntuku, the study’s author, explained that the side effects were written by users online ‘unprompted’, and that ‘clinicians could potentially pay attention to them.'

Within the study, it was found that four per cent of Redditors experienced menstrual irregularities like heavy periods, missed periods, or irregular length of periods, which can also be seen in those suffering from polycystic ovary syndrome (PCOS), thyroid disorders like Hypothyroidism and more.

It also found that men were more likely to report side effects.

Guntuku added: “Clinical trials are the gold standard, but by design, they are slow. This is not a replacement for trials, but it can move much faster, and that speed matters when a drug goes from niche to mainstream almost overnight.”

UNILAD reached out to Novo Nordisk and Eli Lilly for comment.

Choose your content:

an hour ago
2 hours ago
  • Tim Roney/Getty Images
    an hour ago

    Original NSYNC member who had big impact on band's name speaks out about quitting

    The founding member of the group reflected on his early departure, before they found success

    Celebrity
  • Jim WATSON / AFP via Getty Images
    an hour ago

    NASA Artemis II astronaut realized what he was really afraid of when doing his spacewalk

    Reid Wiseman, who served as a flight engineer at the International Space Station in 2014, shared an iconic quote about his fear

    News
  • SWNS
    an hour ago

    Woman who realized she had cancer she saw on Grey's Anatomy reveals symptoms

    Watching TV helped a 19-year-old understand why her symptoms had led doctors to diagnose her with a form of fast-growing cancer

    News
  • Daniel Heuer/Bloomberg via Getty Images
    2 hours ago

    Body language expert breaks down Melania Trump's key authoritative signals during Epstein statement

    The First Lady of the United States made an unexpected public address about Jeffrey Epstein

    News
  • Amy Schumer posts 'thirst trap' after she used weight loss drugs 'to survive'
  • New study suggests ‘unusual’ side effect of weight-loss drugs becoming more common
  • Woman warns of heartbreaking unexpected side effect of taking weight loss drugs
  • New investigation launched after health experts find potentially fatal side effect of taking weight loss drugs