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.

Extra weight putting extra stress on your joints? You're not imagining it. 👇Every pound of body weight adds several poun...
06/24/2026

Extra weight putting extra stress on your joints? You're not imagining it. 👇

Every pound of body weight adds several pounds of pressure on your knees, hips, and lower back. Over time, that added load wears on the joints — and the pain can make moving, exercising, and losing weight feel impossible.

Here's the good news: even modest weight loss can meaningfully reduce that pressure and ease joint pain. And as a board-certified endocrinologist, Dr. Leffert approaches weight management medically — looking at the hormones, blood sugar, and underlying factors that make weight hard to lose in the first place.

If joint pain has you stuck, we can help you find a path forward.

📞 Call 214-369-5992 for more information
🌐 ntendocenter.com

If you've been told your bone density is low — or you've never had it checked — save this post. 👇A DEXA scan is one of t...
06/23/2026

If you've been told your bone density is low — or you've never had it checked — save this post. 👇

A DEXA scan is one of the most important and most overlooked tests in preventive medicine. Osteoporosis is progressive, largely silent, and highly preventable when caught early. Swipe through for everything you need to know — what the test measures, who needs one, why it's an endocrinology issue, and what an abnormal result actually means for your treatment.

Questions? We're here.

📞 214-369-5992
🌐 ntendocenter.com

06/22/2026

An abnormal bone density result is not a diagnosis. It's the starting point. 👇

When Dr. Leffert sees a patient with an abnormal DEXA scan, the bone density number is just the beginning of the evaluation. The next step is finding out why.

That means looking at the full hormonal picture:
🔹 Is estrogen deficiency driving the bone loss?
🔹 Is there an underlying parathyroid condition elevating calcium?
🔹 Is Vitamin D deficiency contributing?
🔹 Are there other hormonal or metabolic factors involved?

Only after that evaluation can we determine whether treatment is appropriate — and if so, which treatment is right for that specific patient.

A DEXA scan tells us there's a problem. An endocrinologist finds out what's causing it.

If you've received an abnormal bone density result and aren't sure what to do next — that's exactly what we're here for.

📞 214-369-5992
🌐 ntendocenter.com

06/19/2026

Why is an endocrinologist treating a bone disease? 👇

It's a fair question — and the answer changes how you think about osteoporosis entirely.
Osteoporosis isn't just a bone problem. It's a hormone problem. And that's exactly why it belongs in an endocrinologist's office.

Here's the hormonal picture:
🔹 Estrogen — one of the most powerful protectors of bone density in the body. When a woman goes through menopause and estrogen levels drop, bone strength drops with it. This is why postmenopausal women are the highest-risk population.
🔹 Parathyroid hormone — primary hyperparathyroidism causes elevated calcium in the blood, which is drawn directly from the bones. Left untreated, it silently destroys bone density over time.
🔹 Vitamin D — technically a hormone, not just a vitamin. Essential for calcium absorption and bone mineralization. Deficiency is one of the most commonly missed contributors to bone loss.

When your endocrinologist evaluates osteoporosis, they're not just looking at your bones. They're looking at the hormonal system driving the bone loss — and treating the cause, not just the symptom.

📞 214-369-5992
🌐 ntendocenter.com

06/18/2026

A fracture from osteoporosis isn't just painful — it can permanently affect your ability to move, function, and live independently. For older adults, a hip fracture is one of the most serious medical events there is.
Here's who needs a bone density test:

🔹 Postmenopausal women — bone loss accelerates significantly after menopause and a DEXA scan is the starting point for knowing where you stand
🔹 Men who have had fractures — osteoporosis affects men too. 10% of all osteoporosis patients are male — and they are significantly underdiagnosed

A bone density test is not the end of the process. It's the beginning. Once we have that result, we can determine whether osteoporosis is present and whether a consultation with an endocrinologist — the specialist most commonly treating this condition — is the right next step.

Don't wait for a fracture to find out.

📞 214-369-5992
🌐 ntendocenter.com

06/17/2026

A bone density test — also called a DEXA scan — is essentially a specialized x-ray that measures the strength and density of your bones. It's the standard tool we use to diagnose osteoporosis.

Here's what gets measured and why:

🔹 Hip — represents the density of cortical bone, the same type found in the wrist, shoulder, and ankle. Hip fractures are among the most serious consequences of osteoporosis.
🔹 Spine — a different type of bone structure altogether, and one that fractures differently than the hip
🔹 Wrist — sometimes included for a more complete picture

We test different sites because different types of bone fracture under different conditions. One measurement alone doesn't tell the whole story.

If you are postmenopausal and have never had a bone density test — this is a conversation worth having with your doctor.

📞 214-369-5992
🌐 ntendocenter.com

Two chronic conditions. One specialist. Better outcomes. 👇Thyroid disease and diabetes are both long-term conditions tha...
06/16/2026

Two chronic conditions. One specialist. Better outcomes. 👇

Thyroid disease and diabetes are both long-term conditions that require ongoing management, regular monitoring, and a physician who understands how each one affects the other.

When one endocrinologist manages both:
🔹 Nothing falls through the cracks between two separate doctors
🔹 Medication decisions account for the full hormonal and metabolic picture
🔹 Long-term complications are tracked and addressed together
🔹 You spend less time coordinating care and more time getting better

Dr. Leffert has been treating both thyroid disease and diabetes for 30+ years. If you have one — or both — of these conditions and are looking for a specialist who sees the whole picture, we'd love to help.

📞 214-369-5992
🌐 ntendocenter.com

06/15/2026

Thyroid disease and diabetes are both long-term conditions that require ongoing management, regular monitoring, and a physician who understands how each one affects the other.

When one endocrinologist manages both:
🔹 Nothing falls through the cracks between two separate doctors
🔹 Medication decisions account for the full hormonal and metabolic picture
🔹 Long-term complications are tracked and addressed together
🔹 You spend less time coordinating care and more time getting better

Dr. Leffert has been treating both thyroid disease and diabetes for 30+ years. If you have one — or both — of these conditions and are looking for a specialist who sees the whole picture, we'd love to help.

📞 214-369-5992
🌐 ntendocenter.com

06/11/2026

If you have Type 1 diabetes, there's something your endocrinologist should be screening you for. 👇

10–15% of people with Type 1 diabetes will also develop Hashimoto's thyroiditis and hypothyroidism. That's not a coincidence — it's autoimmunity.

Both Type 1 diabetes and Hashimoto's are autoimmune conditions. When the immune system is already attacking one gland, it's more likely to attack another.

And there's a third condition in this cluster:
🔹 Hashimoto's thyroiditis — autoimmune attack on the thyroid
🔹 Type 1 diabetes — autoimmune attack on the pancreas
🔹 Primary adrenal insufficiency — autoimmune attack on the adrenal glands

Together these three conditions are known as polyglandular autoimmune syndrome — previously called Schmidt's syndrome. They tend to cluster in the same individual.
If you have Type 1 diabetes and have never been screened for thyroid disease or adrenal insufficiency — that conversation needs to happen.

📞 214-369-5992
🌐 ntendocenter.com

Ultrasound. Biopsy. Results. All in one visit, with the same physician who knows your full health history. ⭐⭐⭐⭐⭐"I've be...
06/10/2026

Ultrasound. Biopsy. Results. All in one visit, with the same physician who knows your full health history. ⭐⭐⭐⭐⭐

"I've been a patient of Dr. Leffert for 10 years — I've never waited more than 10 minutes in the waiting room."

That's what integrated, physician-led endocrinology care actually looks like.

📍 North Texas Endocrine Center | Dallas, TX
🔗 ntendocenter.com

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

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