On the UTI front, I've done a bit of digging and can't find any specific direct links to increased UTIs from mounjaro, I did find a few possible indirect links that could just be weight loss related in general.
The information I could find mentioned that glucose regulation can cause increased urination which may loosely be related to an increase in UTI like symptoms.
One thing that did pop up was acute kidney injury. This is a rare side effect of mounjaro, but is more likely to be linked to a decrease in urination output and has some pretty severe onset symptoms so I don't think this is the right tree to bark up either. I certainly think we'd know if something was wrong, but as always if you suspect anything like this bring it up with your doctor and stop taking mounjaro until it's been confirmed it's safe to resume.
Increased urination can couccur with weightloss, because we expel waste products through our breath, urine and stool and weightloss is using stored energy to fuel ourselves and is bound to have waste byproducts.
On a restricted diet we might be more succeptible to electrolyte imbalances so we might become dehydrated easier and pass urination more frequently, so make sure you're getting your fruits and veggies in.
Hyperthyroidism. If you suspect you have an overactive thyroid, doctor all the way. Desist usage until you're certain it's safe to continue.
There may also be some changes to the microbiome in our waterworks due to this increase in urination which isn't the underlying cause of why the urination is frequent, but it can lead to bacterial growth that leads to UTIs, which then makes you need to wee more and so on.
There will be other factors such as bladder and kidney health, age, hormones, other conditions but I couldn't find anything that specifically ties tirzepatide to an increase in UTIs as opposed to just your bog standard weightloss or very low calorie diet.
I also asked the forbidden chatgpt if it could list some reasons why someone on mounjaro might experience an increase in UTIs and it said as follows:
"Certainly! Here are several reasons why someone taking Mounjaro (tirzepatide) might experience more urinary tract infections (UTIs):
- Increased Urination:
Mounjaro can increase urination frequency, possibly due to changes in blood glucose levels or shifts in fluid balance. If increased urination leads to dehydration, this can concentrate urine and create a more favorable environment for bacteria, increasing UTI risk.
- Dehydration:
Frequent urination can lead to dehydration if fluid intake isn’t sufficient. Dehydration concentrates urine, which can irritate the bladder lining, creating an environment where bacteria can grow more easily.
- Ketosis (especially if on a low-carb diet):
Mounjaro often suppresses appetite and may lead some people to consume fewer carbohydrates, which can induce ketosis. Ketones in urine can alter its pH, potentially irritating the urinary tract and making infections more likely.
- Changes in Urine Composition:
Rapid weight loss, common with Mounjaro, may lead to shifts in urine composition (e.g., increased waste products or changes in pH), which can irritate the urinary tract lining and encourage bacterial growth.
- High Blood Sugar Levels:
If Mounjaro is not fully effective in lowering blood sugar, higher glucose levels in the blood and urine can encourage bacterial growth, as bacteria thrive on glucose.
- Weakened Immune Response:
Rapid or unintentional weight loss can sometimes stress the immune system, temporarily reducing the body's ability to fight infections, including UTIs.
- Bladder Health Disruption:
Frequent urination could disrupt the natural bacterial balance in the urinary tract, potentially reducing protective bacteria and increasing UTI susceptibility.
If someone on Mounjaro experiences recurrent UTIs, it's essential to consult a healthcare provider to discuss hydration strategies, diet adjustments, and any necessary preventive measures to help reduce UTI risk."
I'm not a doctor, I'm just your average garden variety hobbit with too much time on her hands so I haven't really scientifically summarised anything, and I wouldn't take everything chatgpt says here as gospel either. There could be other things you need to eliminate that could be causing UTIs so if you do get them quite often of course bare mounjaro in mind and mention it to your care providers but don't be put off advocating for it to be investigated medically.