- Recent findings revealed various “hidden” side effects of GLP-1 medications like Ozempic, including chills, hot flashes, and irregular menstrual cycles.
- Researchers relied on user-reported data from Reddit to explore the real-world impact of these drugs.
- An expert discusses potential reasons behind these overlooked side effects.
GLP-1 medications, such as Ozempic, Wegovy, and Mounjaro, are known to cause several side effects including nausea, fatigue, constipation, and diarrhea.
However, a recent study in Nature Health discovered additional “hidden” side effects.
The team examined 410,198 Reddit posts mentioning either semaglutide or tirzepatide. Out of 67,008 users who reported using these treatments, 43.5% mentioned at least one side effect.
Notably, issues related to reproductive health, such as menstrual irregularities, and temperature-related symptoms like chills or hot flashes emerged as significant unrecognized side effects.
Dr. Jeffrey Lee, a double board-certified plastic surgeon from Boston, MA, commented on these overlooked effects, providing insights into possible explanations and misunderstandings shared on social media.
This interview has been slightly edited for clarity and length.
Lee: In my practice, the most commonly reported side effects tend to be gastrointestinal, prompted by nausea, bloating, or constipation.
These symptoms usually fade over time or with adjustments in dosage.
Regarding lesser-known effects, a few patients have occasionally mentioned fatigue, though I do not encounter this often.
Most symptoms highlighted in the study aren’t frequently seen in my clinical experience.
Lee: GLP-1 agonists mainly impact the gastrointestinal system, but they also interact with the brain, especially the hypothalamus, which is involved in regulating hormones, temperature, and appetite.
This suggests it’s possible for some patients to experience hormonal or temperature-related symptoms.
That said, these reactions aren’t well-defined clinically yet, and further research is necessary to see if they are directly linked to the drugs or influenced by factors like weight loss or personal physiology.
We’re noticing some patients mention a decreased sense of reward from certain behaviors.
For instance, there have been reports of individuals with alcohol use disorders experiencing a reduced urge to drink. This indicates GLP-1s might lessen the reward response, which could be helpful in some situations.
However, this same mechanism might dull emotional responses, leading to feelings of apathy or lower libido for some patients. It’s an intriguing area of study.
Lee: Patient behavior definitely plays a part.
If someone is actively limiting their intake beyond the medication’s effects, they might experience irritability or mood swings.
Conversely, patients who rely solely on the medication and feel little hunger might notice fewer fluctuations.
So, there’s often a dynamic between the effects of the drug and the patient’s responses.
Lee: Social media can be tricky because it highlights anecdotal, self-reported experiences lacking context.
It’s tough to ascertain whether a symptom is caused directly by the medication, due to rapid weight loss, influenced by other medications, or related to pre-existing health conditions.
Lacking clinical context can lead to incorrect associations, making it essential to interpret these reports with care and alongside clinical data.
Lee: These limitations hold significant weight. For findings to be applicable, the study group must represent typical patients in terms of age, gender, medical history, and medication dosages.
Self-reported data from platforms like Reddit can be biased, capturing a more vocal subset of users.
Even so, these kinds of studies can provide valuable early insights and set the stage for more rigorous research leading to clearer conclusions.
