Yes, semaglutide affects hormones by mimicking the natural gut hormone GLP-1, influencing insulin and appetite, but its significant weight loss can also indirectly impact reproductive hormones (like estrogen, leading to irregular periods), thyroid function (transiently), and stress hormones (cortisol), altering overall hormonal balance, requiring monitoring.
Hormone Replacement Therapy
Recent evidence has shown that weight loss injections such as Wegovy (semaglutide) and Mounjaro (tirzepatide) can affect the absorption of medication. This is particularly important in patients who are taking oral contraception or oral HRT.
Concentrations of other counterregulatory hormones increased with both treatments, with a statistically significantly lower increase for noradrenaline and cortisol with semaglutide vs placebo.
It reduces hunger, signals fullness, stimulates insulin, and inhibits glucagon, maintaining glucose levels. Semaglutide is a glucagon-like peptide-1 receptor agonist. The drug decreases blood sugar levels. The decrease is theorized to be caused by the mimicking of glucagon-like peptide-1 (GLP-1), an incretin.
These hormonal shifts can alter menstrual patterns. Semaglutide may also impact cortisol levels and stress response systems. Changes in cortisol can interfere with the regular pulsatile release of gonadotropin-releasing hormone (GnRH), disrupting the normal menstrual cycle.
Like any medication, Semaglutide hormone side effects exist. Some users may experience temporary hormonal fluctuations, mild nausea, or fatigue. However, these effects are manageable under professional guidance.
Other medicines—Do not take other medicines during the time you are using semaglutide unless they have been discussed with your doctor. This especially includes nonprescription medicines such as aspirin, and medicines for appetite control, asthma, colds, cough, hay fever, or sinus problems.
Amy Schumer stopped taking Ozempic because it made her feel "bedridden," severely nauseous, and unable to play with her young son, attributing her extreme reaction to a genetic marker (GDF15) that causes intense nausea, similar to her difficult pregnancies. She found the side effects—vomiting, lack of energy—made the medication "not livable," despite experiencing significant weight loss.
Ozempic specifically affects insulin and glucagon levels to regulate blood sugar. According to Genesis Lifestyle Medicine, “It does not directly target or influence the production or activity of estrogen, progesterone, or other hormones involved in the menstrual cycle.
High cortisol levels, often from chronic stress or conditions like Cushing's Syndrome, cause symptoms like weight gain (especially around the belly, face, and neck), fatigue, high blood pressure, high blood sugar (leading to diabetes), thinning skin, easy bruising, acne, and mood changes (anxiety, irritability), plus potential issues with sleep, digestion, and reproductive health.
Other common adverse effects include gastrointestinal issues like nausea and vomiting while severe adverse effects include semaglutide induced pancreatitis, risk of diabetic retinopathy, acute gallbladder and kidney injury, etc.
Equally unfortunate is the fact that cortisol belly doesn't have a specific appearance, despite what countless infographics on the internet will tell you. Cortisol belly simply looks like abdominal fat, and there is no way to identify it by appearance.
Hormones out of whack can show up as mood swings, fatigue, unexplained weight changes, irregular periods, skin issues (like acne), hair loss, low libido, sleep problems, digestive issues (constipation/diarrhea), temperature sensitivity, and brain fog, affecting metabolism, energy, and emotional regulation. Recognizing these signs, like persistent fatigue, heavy periods, or new-onset anxiety, helps prompt a doctor visit for diagnosis and treatment.
Kelly Clarkson lost weight by combining a high-protein diet, regular walking, and prescription medication that supported her metabolism. She also adopted a lectin-free diet to reduce inflammation.
Thinning: The skin becomes visibly thinner, making blood vessels more apparent and you might even notice that you bruise more easily. Wrinkles: Fine lines appear more pronounced, especially around the eyes and mouth.. Sagging: Loss of firmness in the jawline and cheeks.
By mimicking GLP-1, Ozempic enhances insulin secretion in response to elevated blood glucose levels. Glucagon suppression: GLP-1 drugs such as Ozempic also inhibit the release of glucagon, another hormone produced by the pancreas. Glucagon raises blood sugar levels by promoting the release of glucose from the liver.
Symptoms of high progesterone
Common symptoms include: Weight fluctuations (usually a slight gain of 5-10 pounds). Drowsiness, waking up groggy or tired. Feeling down but not too depressed.
But since semaglutide can cause significant, rapid weight loss, which can mess with your menstrual cycle, you may experience irregular cycles or even skip a period while using this medication.
Unable to get their prescription, some people have had to stop taking the medication abruptly or fear they may have to. If you are taking it for weight loss, there's no evidence yet that stopping semaglutide abruptly causes harm.
"Ozempic hands" is a slang term for the visible changes in hands due to rapid fat loss from GLP-1 drugs like Ozempic, making them look thinner, bonier, and more aged with prominent veins, tendons, and thinner skin, as subcutaneous fat diminishes and skin doesn't fully contract quickly. It's not a formal diagnosis but a common cosmetic effect of significant weight loss, similar to "Ozempic face".
Summary: Ozempic does not wear off by the end of the week when used as prescribed, as it is specifically designed with a seven-day half-life to maintain therapeutic effects throughout the entire weekly dosing interval.
Who should not take semaglutide? People with a history of thyroid cancer, pancreatitis, or certain endocrine disorders should avoid taking semaglutide.
For the 1st 4 weeks the dose should be only 0.1ml or 10 units. The dose only if needed for more appetite suppression can be titrated to 0.2ml or 20 units for weeks 5-8. Stay with the same dose if losing weight with no side effects.
Natural alternatives to weight loss injections with semaglutide
Here are 9 signs your hormones may be out of whack: