If you’ve been hearing about “weight-loss shots,” “GLP-1 medications,” or medications like Ozempic®, Wegovy®, Mounjaro®, or Zepbound®, you are not alone.
These medications have changed the conversation around obesity, weight management, blood sugar control, and metabolic health. But with so much information online—and a lot of misinformation—it can feel confusing.
This guide explains these medications in plain language so you can better understand how they work, what they do, and why nutrition and lifestyle habits still matter.
One of the biggest changes in modern medicine is understanding that obesity is not simply about “eating too much” or “not trying hard enough.”
Obesity is now recognized as a chronic metabolic disease involving:
GLP-1 and GIP/GLP-1 medications help target some of these biological systems.
These medications are not “magic shots,” but they can be powerful tools when combined with:
Your body naturally makes hormones called incretins after you eat.
Two important incretin hormones are:
GLP-1 (Glucagon-Like Peptide-1)
GLP-1 helps:
GIP (Glucose-Dependent Insulinotropic Polypeptide)
GIP also helps:
In people with obesity, insulin resistance, or type 2 diabetes, these systems often do not function efficiently.
GLP-1 receptor agonists (GLP-1RAs) are medications designed to mimic the body’s natural GLP-1 hormone—but in a stronger and longer-lasting way.
Examples include:
These medications help:
You can think of GLP-1 medications as:
“Single-hormone metabolic medications.”
GIP/GLP-1 medications are newer medications that activate both hormone systems at the same time.
The most well-known example is:
These medications:
In many studies, dual GIP/GLP-1 medications have produced substantially greater average weight loss and larger A1c reductions compared with several GLP-1-only medications.
You can think of these medications as:
“Two-hormone metabolic therapies.”
The obesity medicine field is evolving rapidly.
Researchers are currently studying:
One investigational medication many providers are watching is retatrutide, which targets three hormone systems.
While exciting, these medications are still being studied and are not yet fully available for routine use.
Both GLP-1 and GIP/GLP-1 medications may help:
Some medications in these categories have also shown benefits involving:
This is one reason these medications are becoming important tools beyond diabetes care.
One of the biggest misconceptions online is that these medications replace healthy habits.
They do not.
These medications:
One of the most important discussions happening right now in obesity medicine is muscle preservation.
When people lose weight quickly, they lose:
The goal is to maximize fat loss while minimizing muscle loss.
Protein helps:
Many experts now recommend higher protein intake during medically supervised weight loss.
Typical protein targets often fall around:
Individual needs vary depending on:
Exercise is important—but resistance training deserves special attention.
Resistance training tells your body:
“These muscles are important—please keep them.”
Without enough protein and resistance training, rapid weight loss may contribute to:
Examples of resistance exercise include:
Always discuss exercise plans with your healthcare provider.
These medications can reduce appetite dramatically.
That may sound helpful, but it can sometimes create nutrition challenges.
Common issues include:
Strategies that often help include:
Most side effects are gastrointestinal.
These may include:
Symptoms often improve when:
Although uncommon, serious side effects can occur.
Patients should contact their provider immediately if they experience:
Providers also monitor for:
Some patients benefit from closer medical and nutrition follow-up.
This may include:
This is one reason a multidisciplinary team can be extremely valuable.
As demand for these medications has increased, compounded versions have also become more common.
Patients should work with licensed healthcare professionals and reputable pharmacies whenever possible.
Compounded medications may vary in:
Patients should discuss risks and benefits with their healthcare provider.
This is one of the most common questions patients ask.
Research shows many people regain some weight after stopping GLP-1 or GIP/GLP-1 medications.
Why?
Because obesity is a chronic disease involving biology, appetite signaling, and metabolism.
This does not mean patients “failed.”
It means long-term management strategies matter.
That is why:
remain critically important.
If you are considering one of these medications, ask:
GLP-1 and GIP/GLP-1 medications are changing obesity and diabetes care.
These medications can:
But they work best when combined with:
The goal is not simply losing weight.
The goal is improving long-term metabolic health while preserving strength, muscle, and quality of life.
If you are considering one of these medications, talk with your healthcare provider and a registered dietitian experienced in obesity medicine and metabolic health.
Looking for more guidance while taking a GLP-1 or GIP/GLP-1 medication?
Download the free:
“GLP-1 Success Guide”
Includes:
Susan Peacock, MS, RDN
Registered Dietitian Nutritionist
Website: Susanpeacockdietitian.com