Why am I still hungry on tirzepatide? 8 reasons and what to do

If you’re taking a glucagon-like peptide-1 receptor agonist (GLP-1) weight loss medication like tirzepatide (the active ingredient in Zepbound and Mounjaro), you can generally expect to have a reduced appetite. However, if you’re experience isn’t as expected, you may be wondering, “Why am I still hungry on tirzepatide?” 

Read on to learn some of the possible reasons why you’re still hungry on tirzepatide, what to do about it, and when to talk to a healthcare provider.  

You might feel frustrated if you’re trying to lose weight but you’re still feeling consistently hungry on tirzepatide. Here are 8 reasons why you might be experiencing this. 

Fastest-working GLP-1 for faster weight loss

See if you qualify

1. Hunger doesn’t completely disappear on tirzepatide

While GLP-1s like tirzepatide do reduce your hunger levels, you’re still a human, and when you eat fewer calories, hunger comes with the territory. 

“Tirzepatide is designed to help manage your appetite, not eliminate it completely. Some level of hunger is normal and expected, even while on the medication,” says Dr. Hans Schmidt, M.D. FACS, chief of Bariatric Surgery at the Center for Weight Loss and Metabolic Health at Hackensack University Medical Center. 

2. You haven’t given it enough time to work

While tirzepatide is one of the closest things we have to a magic bullet for weight loss (okay, not quite!), the effects don’t actually kick in overnight. 

There’s an adjustment period as your body gets used to the medication, and it takes some time for tirzepatide to start working. It takes about 4 weeks for the medication to reach steady levels in your bloodstream. Some people may notice a reduction in appetite within  2 to 3 weeks, but everyone is different. 

Keep in mind: it can take even longer to reach an effective maintenance dose that gives you the best results in managing your hunger. 

3. You’re experiencing “emotional hunger”

If you’re someone who experiences emotional eating, tirzepatide can help reduce emotional eating to some extent but it isn’t a substitute for addressing underlying psychological causes. 

Tirzepatide helps manage both physical hunger and emotional eating by acting on appetite and reward centers in the brain. However, it doesn't fully replace the need to address the psychological roots of emotional eating, “which can be triggered by things like stress, boredom, or habit,”  Dr. Schmidt says. 

Tirzepatide may still help you manage your symptoms, but you’ll likely need to work with a mental health professional for help addressing the underlying causes of your emotional eating.

4. You’re stressed out

Stress eating is a common phenomenon. On top of emotional eating, physiological changes can contribute as well. “Stress can increase cortisol levels, a hormone that can make you feel hungrier and crave certain foods. This can sometimes counteract the effects of the medication,” Dr. Schmidt says.

5. You’re sleep-deprived

Sleep (or lack thereof) plays a major role in weight loss. Research shows that sleep deprivation affects two key hormones involved in weight loss. These are ghrelin (the “hunger” hormone) and leptin (the “fullness” hormone). When you’re sleep deprived, leptin levels are disrupted, and ghrelin levels increase, meaning your appetite will go up.  

6. You’re dehydrated

Drinking water before meals can help you feel fuller and eat less. So, if you haven’t been drinking enough fluids or consuming foods that are high in fluids, your body’s appetite isn’t curbed as effectively. 

7. You’re not at an effective maintenance dose yet

The starting dose for tirzepatide is 2.5 mg for 4 weeks. For many people, the starting dose is just that: a starting dose. Your provider will increase the dosage by 2.5 mg increments approximately every four weeks until you determine what the most effective maintenance dose is for you. 

Your healthcare provider will help you find which dose will help you see the best results for your goals, while helping you manage side effects. 

8. Your body has adapted to your dose and you need higher

If you’re already on a higher dose, your body may have adapted to the current dose, and you might need to go higher, Dr. Schmidt says. It can take some time to figure out which dose of tirzepatide is the most effective maintenance dose for you. Tirzepatide dosages can go up to 15 mg. 

Now that you know some level of hunger can still occur on tirzepatide, here are some strategies you can use to help manage your appetite and reduce persistent hunger cues. 

Consider meal timing

“Eating at regular intervals can help you manage hunger throughout the day,” Dr. Schmidt says. For example, if you skip meals, you might find yourself overly hungry later, which can lead to overeating or stronger cravings. 

Load up on protein, fiber, and healthy fats

Three key aspects of a healthy diet that keep hunger at bay include the following: 

• Protein: Protein-rich foods increase satiety, meaning they help you feel fuller for longer. 

• Fiber: Fiber, especially certain types of soluble fiber, helps slow down digestion and promotes feelings of fullness. 

• Healthy fats: Healthy fats from sources like olive oil, avocado, nuts, seeds, and fatty fish also help you feel satisfied for longer. 

Be mindful of emotional triggers

If you tend to be an emotional eater or stress eater, it’s important to be mindful of this. “Pay attention to whether you're eating out of physical hunger or for other reasons like stress or boredom,” Dr. Schmidt says. 

Ask yourself: Do I want to eat right now because I’m actually feeling hungry in my stomach, or is it because I want to cope with a difficult emotion or boredom? A qualified therapist can help you develop strategies to manage these emotional or stress-related aspects of your eating habits. 

Prioritize sleep

Since sleep impacts weight loss, it’s important to make sure you’re getting enough high-quality sleep. Aim for seven to nine hours of sleep each night.

If you have trouble sleeping, try these sleep hygiene tips:

• Keep a consistent bedtime and wake time

• Limit caffeine consumption later in the day

• Limit or avoid napping (especially later in the day)

• Eat dinner earlier in the evening

• Keep your bedroom dark and cool

Manage stress

Chronic stress and high cortisol levels can make it harder for tirzepatide to regulate appetite effectively, Dr. Schmidt says. Try incorporating stress management techniques like:

• Doing deep breathing exercises

• Meditating

• Exercising regularly

• Trying progressive muscle relaxation

• Speaking with a therapist

Stay hydrated

Since drinking water before meals helps curb appetite, Dr. Schmidt emphasizes the importance of staying hydrated. The general recommendation is for men to have 13 cups of fluid per day and women to have nine cups per day. 

If you still feel very hungry or notice consistent cravings even when taking tirzepatide, it’s a good idea to discuss this with your healthcare provider, Dr. Schmidt says. They can help determine why this is happening and whether you need to increase your dosage, switch to another medication, or make adjustments to your lifestyle. 

See if you qualify

If you’re still hungry on tirzepatide, don’t panic. It’s normal to feel some level of hunger on this weight loss medicine. However, if you’re feeling very hungry often, several factors could be at play.

• Stress, lack of sleep, emotional eating, and dehydration can all impact how hungry you feel, even while taking tirzepatide.

• If you recently started tirzepatide, it’s possible you just need to give it some more time to really kick in. If you’ve been taking it for a while, you might need to increase your dose to a more effective maintenance dose. 

• To counteract hunger on tirzepatide, eat a nutrient-rich diet full of protein and fiber, manage your stress, be mindful of emotional eating, stay hydrated, and prioritize sleep.