Dr. Jonathan Leffert

Dr. Jonathan Leffert Jonathan Leffert, MD is a board certified endocrinologist.

He offers thyroid RFA, a nonsurgical and thyroid sparing treatment option for patients with thyroid nodules.

Are you feeling winded just walking up the stairs? It might not be your fitness level—it might be your thyroid. 🦋🫁For ,...
01/13/2026

Are you feeling winded just walking up the stairs? It might not be your fitness level—it might be your thyroid. 🦋🫁

For , we are looking at how this small, butterfly-shaped gland affects your lungs. Most people don't realize that thyroid hormones are essential for the strength of your respiratory muscles—including your diaphragm.

When your thyroid is out of balance: 💨 Hypothyroidism can lead to "shallow breathing" and weakened respiratory muscles, making you feel short of breath even with light activity. 💨 Hyperthyroidism can put your respiratory system into overdrive, leading to a rapid breathing rate and a feeling of "air hunger." 💨 Large Goiters or Nodules can physically press against the trachea (windpipe), making it difficult to breathe comfortably, especially when lying down.

Your thyroid is the "metabolic pace-setter" for every breath you take. If you’re struggling with unexplained shortness of breath, it’s time to look at your hormone levels. 🩺

Have you ever felt "out of breath" for no reason? Let’s talk about it in the comments. 👇

Constipated? Bloated? Feeling "sluggish" after every meal?It might not be your diet—it might be your thyroid. 🦋For , I’...
01/10/2026

Constipated? Bloated? Feeling "sluggish" after every meal?

It might not be your diet—it might be your thyroid. 🦋

For , I’m pulling back the curtain on the "Gut-Thyroid Connection." Your thyroid is the master controller of your metabolism, which acts like the engine for your digestive tract.

When your thyroid is slow (Hypothyroidism): 🐢 Your digestive "transit time" slows down. 🐢 This leads to chronic constipation and gas. 🐢 It can even lower stomach acid, making it harder to absorb nutrients from your food.

When your thyroid is overactive (Hyperthyroidism): 🏃‍♂️ Everything speeds up too much. 🏃‍♂️ This often leads to frequent bowel movements or malabsorption.

If your gut health hasn't improved with diet changes, it’s time to check your levels. Your digestion is often the first place a thyroid imbalance shows up!

Do you have questions about thyroid symptoms? Drop them in the comments below. 👇

When it comes to your thyroid, experience matters—but so does continuity of care. 🦋If you’ve been told you have a thyroi...
01/09/2026

When it comes to your thyroid, experience matters—but so does continuity of care. 🦋

If you’ve been told you have a thyroid nodule, the next steps can feel overwhelming. At North Texas Endocrine Center, Dr. Jonathan Leffert provides a seamless experience from start to finish.

As a board-certified endocrinologist with over 30 years of experience, Dr. Leffert doesn’t just manage your labs; he is hands-on with your diagnostic care. He performs his own ultrasounds and biopsies right here in the clinic, ensuring the highest level of accuracy and comfort.

Looking for a non-surgical option? Dr. Leffert also offers Thyroid Radiofrequency Ablation (RFA), a cutting-edge procedure that treats nodules without the need for surgery or a hospital stay.

Don't let a "wait and see" approach keep you in the dark. Get the expert answers you deserve.

Start your New Year with a team that puts your health first. Contact our office today! North Texas Endocrine Center 🌐 ntendocenter.com 📞 (214) 369-5992

It’s the first week of January, and the "crash diet" ads are everywhere. But as an endocrinologist, I see the side of th...
01/08/2026

It’s the first week of January, and the "crash diet" ads are everywhere. But as an endocrinologist, I see the side of these diets that the ads don’t show. 🛑

When we push our bodies into extreme calorie deficits or follow "fad" resolutions, we aren't just losing weight—we are sending a stress signal to our endocrine system.

Why crash diets often fail:
✨ Hormonal Backlash: Rapid restriction can cause a drop in active thyroid hormones and an increase in cortisol. ✨ Metabolic Adaptation: Your body learns to run on less, making it harder to maintain weight loss long-term.
✨ Muscle Loss: Without proper nutrition and medical oversight, you may lose vital muscle mass instead of just fat.

This year, let’s trade the "quick fix" for a "correct fix." Whether you are managing a thyroid condition, insulin resistance, or simply want to optimize your metabolic health, the best approach is one that is scientifically sound and sustainable.

Prioritize your hormones, fuel your body properly, and remember: health is a marathon, not a sprint. 🏃‍♂️💨

Start your New Year with a team that puts your health first. Contact our office today!

North Texas Endocrine Center 🌐 ntendocenter.com 📞 (214) 369-5992

01/07/2026

Getting to know Dr. Leffert. 👓🏛️

When he’s not caring for patients, Dr. Leffert is exploring Presidential Libraries across the country. He loves diving into the details of how these leaders lived, worked, and interacted with their families. It’s not about politics—it’s about the human stories that shaped our nation. 🇺🇸

Which Presidential Library should he visit next? Clinton in Little Rock or Carter in Atlanta? Vote below! 🗳️

01/05/2026

Are you taking control of your A1C? The power is in your hands!

Your A1C reflects your average blood sugar over the past few months. Taking consistent action is the key to better management.

Here are 4 essential steps to help you take control:

🥗 Follow a healthy eating plan.

🏃‍♀️ Stay physically active.

🩸 Monitor your blood sugar regularly.

📅 Remember your check-ups!

Ready to master your A1C goals? If you need support, we are here to help!

Happy Friday! It's always good to start off the new year with a refreshed perspective on health. One of the best and si...
01/02/2026

Happy Friday! It's always good to start off the new year with a refreshed perspective on health. One of the best and simplest ways to improve it is to focus on eating whole foods.

What is your top health priority or goal for the New Year? Let us know in the comments! 👇

The North Texas Endocrine Center office remains closed today, January 2nd, as we wrap up the New Year's holiday break. We are excited to kick off 2026 when we reopen for normal business hours on Monday, January 5th! We look forward to partnering with you on your goals!

01/01/2026

Happy New Year! Office Closure Notice.

The North Texas Endocrine Center will be closed for the holiday break on January 1st and 2nd.

We will resume normal hours on Monday, January 5th. We look forward to seeing you in the new year!

01/01/2026

🥂 A Message of Gratitude from Dr. Leffert

As 2025 comes to a close, we’re taking a moment to step away from the probes, generators, and medical models to focus on what matters most.

Dr. Leffert wanted to share a personal note of thanks to the community that makes his work possible:

"I want to tell you how grateful I am for all the blessings I have in life. First my family... but also my office staff, my partner, the people who work with me, and most significantly, the patients who I take care of. It is truly an honor and a privilege to be able to take care of patients who trust me and allow me to be in their lives." — Dr. Jonathan Leffert

At the North Texas Endocrine Center, our goal is to provide you with the latest health innovations—like non-surgical RFA—while never losing sight of the personal connection and trust that defines great healthcare.

Thank you for allowing us to be a part of your health journey this year. We look forward to serving the Dallas community in the year ahead!
➡️ Looking for an experienced endocrinologist in the Dallas area? ➡️

Start your New Year with a team that puts your health first. Contact our office today! North Texas Endocrine Center | ntendocenter.com | (214) 369-5992

12/31/2025

⛳️ Getting to Know Dr. Leffert: Life on the Links

As we wrap up the year, we’re stepping outside the office and onto the green! 🏌️‍♂️ While Dr. Leffert spends his days mastering the latest medical technology—like RFA—his favorite way to recharge is on the golf course.

Dr. Leffert picked up golf a few years ago and, like many of us, became a bit obsessed! For him, it’s about more than just the score:

🌿 Great Outdoors: After spending most of the day inside the clinic, he loves the chance to get out and enjoy the beauty of nature.
🤝 The Social Side: Golf has been a wonderful way to connect with friends from all walks of life.
🎯 The Challenge: Much like medicine, golf requires focus and discipline. "It’s really challenging and it's been sometimes heartbreaking, but oftentimes very much fun," says Dr. Leffert.

Whether he’s refining his swing or performing a non-surgical RFA procedure, Dr. Leffert is driven by a commitment to constant improvement and meaningful connection.

➡️ Looking for an experienced endocrinologist in the Dallas area? ➡️

Contact our office today! North Texas Endocrine Center | ntendocenter.com | (214) 369-5992

12/30/2025

🌎 Getting to Know Dr. Leffert: The Explorer ✈️

As we close out the year, we wanted to share a little more about the person behind the reels. When Dr. Leffert isn't in the office using the RFA generator and probe to treat patients, he’s often exploring the far corners of the globe!

From South America and Africa to Morocco and Europe, Dr. Leffert’s passion for travel has taken him across several continents. His absolute favorite destination so far? Egypt. 🇪🇬

"I thought Egypt was fascinating because you are seeing one of the oldest civilizations in the world. The level of progressiveness in their architecture and their science was amazing... it's really remarkable to have the opportunity to touch and feel structures that are thousands of years old." — Dr. Jonathan Leffert

Just as he admires the precision and ingenuity of ancient scientists, Dr. Leffert is committed to bringing the latest scientific progress—like non-surgical Thyroid RFA—to his patients right here in Dallas.

Next on his bucket list? A trip to Asia! 🌏

➡️ Looking for an experienced endocrinologist in the Dallas area? ➡️

Whether he’s exploring history or leading the way in modern thyroid care, Dr. Leffert is dedicated to excellence.

Contact our office today! North Texas Endocrine Center | ntendocenter.com | (214) 369-5992

We're taking an extra day to rest and recharge after the Christmas holiday!The North Texas Endocrine Center office is st...
12/26/2025

We're taking an extra day to rest and recharge after the Christmas holiday!

The North Texas Endocrine Center office is still closed today, December 26th.

We'll be back to assist you with all your endocrine needs starting Monday, December 29th! See you then!

Address

NORTH TEXAS ENDOCRINE CENTER: Carrell Clinic Center, Tower II, 9301 North Central Expressway, Suite 570
Dallas, TX
75231

Opening Hours

Monday 8am - 4:30pm
Tuesday 8am - 4:30pm
Wednesday 8am - 4:30pm
Thursday 8am - 4:30pm
Friday 8am - 4:30pm

Telephone

+12143695992

Website

Alerts

Be the first to know and let us send you an email when Dr. Jonathan Leffert posts news and promotions. Your email address will not be used for any other purpose, and you can unsubscribe at any time.

Shortcuts

Featured

Share

Share on Facebook Share on Twitter Share on LinkedIn
Share on Pinterest Share on Reddit Share via Email
Share on WhatsApp Share on Instagram Share on Telegram

Category