The short answer
Mounjaro (tirzepatide) is not a treatment designed for cholesterol or triglycerides, but in large trials triglycerides fell clearly and the rest of the lipid profile improved on average [1][3]. In a 72-week trial in adults with obesity or overweight, triglycerides fell by between 21.2% and 29.1% depending on the studied dose, against only 5.6% with placebo [1].
A statin or any other lipid medicine you take stays the decision of the doctor who prescribed it, and nobody should change or stop a medicine alone because of Mounjaro [8]. Most important, the lipid test is repeated with your doctor after a while, because your own numbers decide, not the trial average [7].
What may change on your lipid report: the numbers
These numbers come from the lipid results table in the official label of the obesity version of the same active drug (tirzepatide), for a 72-week trial after 5, 10 and 15 mg weekly, shown as the percent change from the starting value [1]. The doses here describe the trial only and are not a recommendation of any dose for you.
Triglycerides: fell by 21.2% with 5 mg, 23.8% with 10 mg and 29.1% with 15 mg, against 5.6% with placebo. This was the clearest change in the trials, but your own test sets your actual number [1].
LDL (the harmful cholesterol): fell by 4.6%, 5.6% and 7.1% with the three doses, against 1.7% with placebo. This is a modest change, and not a replacement for a statin [1].
HDL (the helpful cholesterol): rose by 6.9%, 9.2% and 8.0% with the three doses, while it fell 0.7% with placebo [1].
Non-HDL (total minus HDL): fell by 8.0%, 9.4% and 11.7% with the three doses, against 2.3% with placebo. Doctors watch this figure because it covers all the harmful fats [1].
Total cholesterol: fell by 3.8%, 4.4% and 6.3% with the three doses, against 1.8% with placebo, a relatively small change [1].
In a second trial in the same label, in people with type 2 diabetes, triglycerides fell 27.1% with 10 mg and 27.3% with 15 mg, against 3.3% with placebo. LDL, however, rose in every group: 7.4% with placebo, 1.8% with 10 mg and 4.1% with 15 mg [1]. So the picture is not the same for everyone.
Why do lipids change with Mounjaro?
Weight loss itself is a likely contributor. In the large obesity trial of 2539 adults, mean weight loss after 72 weeks was 15.0%, 19.5% and 20.9% depending on the dose, against 3.1% with placebo [3]. In general, as weight falls, many blood measures move, triglycerides among them.
But it is not weight alone. In an analysis of a phase 2 trial in people with type 2 diabetes, apoC-III (a blood protein linked to triglycerides) fell in a dose-related way, and its change predicted the triglyceride change better than body weight did [6]. In a later analysis of 259 people over 26 weeks, triglycerides and the simpler diglycerides fell [5]. That hints that the drug may act on how the body handles fat, not only on how much you eat.
Read also: Mounjaro, Wegovy and fatty liver
What the trials do and do not tell you
The figures in the previous part are averages for large groups, not a promise of a particular result for you. In the same label, LDL rose in every group in the diabetes trial, even if less than with placebo [1]. So the general direction is helpful, but not guaranteed in every person.
These trials were designed mainly around weight (and, in the diabetes trial, blood sugar as well) [3]. So we cannot say Mounjaro treats high cholesterol. What we can say is that triglycerides fell in the trials, that the rest of the report moved in a helpful direction on average, and that this is confirmed by your own test.
Then there is the heart question. In a very large study of 13,299 people with type 2 diabetes and established artery disease, Mounjaro was compared with another weekly diabetes drug (dulaglutide). Major heart events (cardiovascular death, heart attack or stroke) happened in 12.2% with Mounjaro against 13.1% with the other drug, and the result showed Mounjaro was not worse, but did not prove it was better [4]. The official Mounjaro label lists its use to reduce major heart events in adults with type 2 diabetes at high risk, which is not the same situation as someone with high cholesterol and no diabetes [2].
Do statins continue with Mounjaro?
A statin reduces the cholesterol your body makes and is usually prescribed to people at higher risk of heart and artery disease, including people with diabetes, kidney disease or existing heart disease [8]. In most cases treatment continues for a long time, and sources such as the NHS say you usually need it for life [8][9].
So the rule is simple: Mounjaro is not a replacement for a statin and not a reason to handle the statin yourself. The official statin page advises talking to a doctor or pharmacist before stopping it [8]. Whether to continue or adjust it is for the doctor who prescribed it, after seeing your new test.
One practical point: the Mounjaro label advises caution with medicines taken by mouth, because Mounjaro slows stomach emptying [2]. So tell your doctor about all your medicines, keep follow-up, and mention any new muscle pain, since muscle pain is a common statin side effect [8].
Read also: High cholesterol results and next steps
Very high triglycerides and pancreatitis
Triglycerides are grouped by the US standard: under 150 mg/dL is normal, 150 to 199 borderline, 200 to 499 high, and 500 and above very high [10]. Extremely high levels raise the risk of acute pancreatitis [10].
At the same time, the Mounjaro label lists acute pancreatitis as a warning and notes that fatal and non-fatal cases have been observed [2]. The label of the obesity version also covers it and asks that patients be told about its symptoms [1]. That is why, if your triglycerides are in the very high range, your doctor needs to know before you start and while you are on treatment.
Warning signs according to the NHS: sudden severe tummy pain that may spread to the back and gets worse with eating, with nausea, vomiting or fever [11]. If severe pain spreads to your back, call an ambulance or go to A&E at once and do not drive yourself [11]. After that the doctor decides what happens with the medicine.
Causes and ways to handle high triglycerides are explained in detail in our dedicated article, so we do not repeat them here.
Read also: High triglycerides: causes and next steps
How to read your lipid report
First, look at the unit. Reports in Egypt are usually in mg/dL, while the NHS uses mmol/L. The numbers differ completely even when the meaning is the same.
Second, which fat is it? A figure like 400 means one thing if it is triglycerides and another if it is total cholesterol. Triglycerides of 400 mg/dL fall in the high band (200 to 499) [10]. If total cholesterol is 400 mg/dL, the NHS guide for healthy adults is a total below 5 mmol/L [7], which is about 193 mg/dL by arithmetic conversion, so 400 is far above it. In both cases no single number is interpreted alone, and the doctor reads it with your age, blood sugar, blood pressure and family history.
Third, the same reference says the right target for you depends on your age and other factors, and the published figures are a guide for healthy adults [7]. It also lists HDL above 1.0 mmol/L for men and above 1.2 for women, and non-HDL below 4 [7].
Fourth, some labs ask for 9 to 12 hours of fasting before a triglyceride test, so ask the lab [10].
When and with whom to repeat the test
There is no fixed worldwide date for repeating the test after Mounjaro, and the timing is set by the doctor following you according to your case. In practice at follow-up we ask you to bring the lipid test from before starting, then compare it with the new result from the same lab under the same fasting conditions, so the comparison is fair.
Keep in mind that in the trials weight fell over 72 weeks [3], so a test after a few weeks may look different from one after months. If you take a statin, compare before and after with the doctor instead of interpreting alone, and the doctor decides what changes in the plan [7][9].
If triglycerides were very high or you have severe tummy pain, do not wait for the appointment: severe pain needs urgent care [11].
What actually helps besides medicine
The NHS says cholesterol can come down with changes to diet and lifestyle, and some people need medicine as well [9]. There is no magic food: the point is a lasting eating pattern, not a week of deprivation.
With Mounjaro the appetite drops, so the risk is eating little but of the unhelpful kind. Try to keep enough protein, vegetables, legumes and suitable oils, and discuss sugars and sweetened drinks with your doctor and dietitian. We also have an article on everyday Egyptian foods that help lower cholesterol.
The question of the fastest way to lower lipids has no guaranteed shortcut. What decides the right approach is which fat is high in your case and why, and the doctor chooses the plan. If your liver or blood sugar tests also need follow-up, we look at them together in the same visit.
Read also: Foods that lower cholesterol in Egypt
Before and after, harms, and the diet
People search for before and after photos and tests for Mounjaro. The most honest comparison is your own: take the lipid test before starting, then compare it after a while with the doctor under the same test conditions. Any comparison with other people is no evidence of what will happen to you [3].
As for harms, in the large obesity trial some participants stopped treatment because of side effects: 4.3%, 7.1% and 6.2% depending on the dose, against 2.6% with placebo [3]. Acute pancreatitis is an official warning in the Mounjaro label, which reports 14 events in 13 patients treated with the drug, against 3 events in 3 patients on comparators [2].
The diet that goes with Mounjaro must be organised, not starvation. Reviewing food and tests with the doctor is more useful than any random plan. For a deeper explanation of the drug family and its effects, see our guide.
Read also: GLP-1 medication guide
Following your lipid report with us
If you take Mounjaro or are thinking about it and your lipid test is high, you can book a follow-up. We review the test before and after, your current medicines, and the eating plan, and set the next step in coordination with the doctor who prescribes your lipid medicines [7].
Weight and Mounjaro follow-up is available at two branches: Maadi (14 El-Mokhtar Street, behind QNB, New Maadi) and Fifth Settlement (CMC Medical Mall, 4th floor, North 90th Street, Wednesdays from 3:30 pm). An InBody device is available for body composition analysis.
Internal medicine with Dr Mohab Ashraf Fouad is available at the Maadi branch only. We are not a cardiology clinic, so if the matter needs a heart specialist's opinion we will tell you that plainly.
Read also: Book an appointment
