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Dr. Jonas Leibowitz
👨🏻‍⚕️Triple Board Certified Endocrinologist | 30+ years experience
🩺 Specializing in Diabetes, osteoporosis, weight loss, thyroid issues, and more…
📍Private Practice Located in Yonkers, NY

10/08/2026

The thyroid warning on GLP-1 medicines can sound scary. What does it actually refer to?

Dr. Jonas explains that it concerns C-cell tumors observed in rodent studies, and that it’s unclear whether this finding is relevant to humans. The warning he discusses isn’t about every thyroid condition, such as an underactive or overactive thyroid or a thyroid nodule.

Talk with your clinician about your own history and medication questions.

10/07/2026

What happens if you miss multiple doses of your GLP-1 medication?

It’s actually more common than you might think. Patients may miss doses because they run out of medication, travel, have a procedure or surgery, change medications, experience pharmacy or insurance issues, or simply decide to take a break.

The important thing to know is that the longer you’re off your GLP-1 medication, the more important it is to discuss how to restart it with your prescriber.

After several missed doses, you may need to restart at a lower dose depending on how long you’ve been off the medication and how well you tolerate it. This is especially important if you are sensitive to gastrointestinal side effects such as nausea or vomiting.

Dr. Jonas also discusses why planning ahead for procedures and having a backup strategy for medication availability may help prevent unnecessary gaps in treatment.

If you’ve missed multiple GLP-1 doses, talk with your prescriber about the appropriate way to restart your medication.

09/30/2026

đź’‰ GLP-1 Tip of the Day: Start Low & Go Slow

When starting a GLP-1 medication for diabetes or weight management, it’s generally best to begin at a lower dose and increase gradually as directed by your healthcare provider.

For diabetes, lower doses can provide meaningful blood-sugar-lowering effects, while weight loss may increase as the dose is gradually increased.

The key is tolerability. Give your body time to adjust before moving to a higher dose. GLP-1 therapy is often a long-term treatment, so finding a dose and pace that you can tolerate is important for staying on treatment over time.

Remember: don’t change your dose on your own. Work with your healthcare provider to determine the right dosing schedule for you.

🎥 Watch Dr. Jonas Leibowitz | Endocrinologist | Diabetes Specialist explain why “start low and go slow” matters.

09/30/2026

đź’‰ GLP-1 Tip of the Day: Start Low & Go Slow

When starting a GLP-1 medication for diabetes or weight management, it’s generally best to begin at a lower dose and increase gradually as directed by your healthcare provider.

For diabetes, lower doses can provide meaningful blood-sugar-lowering effects, while weight loss may increase as the dose is gradually increased.

The key is tolerability. Give your body time to adjust before moving to a higher dose. GLP-1 therapy is often a long-term treatment, so finding a dose and pace that you can tolerate is important for staying on treatment over time.

Remember: don’t change your dose on your own. Work with your healthcare provider to determine the right dosing schedule for you.

🎥 Watch My Diabetes Doc explain why “start low and go slow” matters.

09/30/2026

Did you know GLP-1 medications have been around for over 20 years? đź‘€

The first GLP-1 medication approved in the United States was Byetta (exenatide), approved by the FDA in 2005.

It was a short-acting injectable medication taken twice a day and was originally used to treat diabetes. Patients also experienced weight loss while taking it.

Today, GLP-1 medications have become a major part of the conversation around diabetes and weight management — but the story actually started more than two decades ago.

Follow Dr. Jonas Leibowitz | Endocrinologist | Diabetes Specialist for more GLP-1 tips, facts, and history.



Disclaimer: This is for informational purposes only and is not a substitute for medical advice or treatment from a health care provider.

09/04/2026

Many people associate GLP-1 therapy with Ozempic and Wegovy, but the history of GLP-1 treatment actually goes back more than 20 years.

In this video, I explain the surprising history behind the first GLP-1 therapy and how research involving a lizard helped lead to the development of an early GLP-1 medication.

Ozempic and Wegovy helped bring GLP-1 medications into mainstream conversation, but the science and research behind GLP-1 therapy began decades before they became household names.

Understanding where these medications came from helps us appreciate just how far diabetes and metabolic health treatment has come.



For educational purposes only. This content is not medical advice.

09/03/2026

GLP-1 Tip of the Day đź’ˇ What Is GIP?

You’ve probably heard of GLP-1—but what about GIP?

GIP stands for glucose-dependent insulinotropic polypeptide and is the second most studied incretin hormone after GLP-1.

GIP is involved in the body’s response to food intake and contributes to effects related to diabetes management, blood sugar control, satiety, and weight loss.

Some medications, including tirzepatide, stimulate both GLP-1 and GIP pathways. That’s why understanding GIP is becoming increasingly important for patients, healthcare professionals, and anyone interested in diabetes and metabolic health.

In today’s video, I explain what GIP is, how it relates to food intake, and why this hormone may play an important role in newer treatments for chronic diseases.



For educational purposes only. This content is not medical advice.

09/02/2026

GLP-1 Tip of the Day đź’ˇ

What is an incretin?

In today’s GLP-1 tip of the day, I explain how incretin hormones—especially GLP-1—connect what you eat with blood sugar control, appetite, and digestion.

GLP-1 has four primary effects:

đź’‰ Stimulates insulin release after meals
🩸 Helps inhibit glucose production by the liver
đź§  Helps regulate appetite and signals fullness
🍽️ Slows digestion to help control how sugar enters the bloodstream

GLP-1 is one of the most extensively studied incretin hormones and is used in treatments for both diabetes and weight management.

Follow Dr. Jonas Leibowitz | Endocrinologist | Diabetes Specialist for more evidence-based GLP-1 education.

Medical disclaimer: For educational purposes only. Not medical advice.

09/01/2026

Another Important Mounjaro update! 📢

The 2.5 milligram dose of Mounjaro, a GLP-1 and GIP medication for type 2 diabetes, is now approved for long-term use as a treatment dose.

Previously, this dose was considered a titration dose used to reach higher doses. This change is beneficial for patients who respond well to the lower dose, as it allows them to maintain blood sugar control and potentially experience weight loss without the need to increase their dose.

This update is advantageous for both patients and prescribers.



Medical disclaimer: This content is for educational purposes only and is not medical advice.

08/31/2026

Mounjaro Update: Now Approved for Cardiac Protection

The FDA has approved Mounjaro for use in patients with type 2 diabetes who are at high risk for cardiovascular disease, specifically to reduce the risk of cardiovascular death, stroke, or heart attack.

This approval is based on a long-term study comparing Mounjaro with Trulicity, a medication with an established cardiovascular benefit. Mounjaro showed an 8% lower rate of cardiovascular death, heart attack, or stroke compared with Trulicity, making it an important new option for patients with type 2 diabetes who are at high cardiovascular risk.

This content is for educational purposes only and is not intended as medical advice. Please consult your healthcare provider to determine whether Mounjaro or any other treatment is appropriate for you.

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770 McLean Avenue B
Yonkers, NY
10704

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