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ENDOCRINOLOGY NEWS

STUDY EVALUATES LEVOTHYROXINE DISCONTINUATION IN OLDER ADULTS

Illustration of thyroid hormone physiology

One-quarter of adults aged 60 and older successfully discontinued thyroid replacement therapy in a prospective cohort study

The issue: Levothyroxine is often continued for life, but many older adults may be taking it without a permanent indication.

Why this matters: In a prospective study of 370 adults aged 60 and older, 25.7% discontinued levothyroxine while maintaining acceptable thyroid function at 1 year.

Primary care relevance: Supports supervised dose reduction in selected patients, particularly those on lower baseline doses.

FDA APPROVES ONCE-WEEKLY INSULIN

Awiqli (insulin icodec-abae) once-weekly insulin

Once-weekly Awiqli (insulin icodec-abae) is expected in pharmacies in the second half of 2026

The issue: The FDA recently approved the first once-weekly insulin for type 2 diabetes

Why this matters: Once-weekly insulin may appeal to patients who do not like daily injections

Primary care relevance: Providers need to be aware of Awiqli's effects and dosing

STUDY OFFERS GUIDANCE ON TAKING THYROID HORMONE WITH FOOD

Thyroid medication bottle

Randomized trial finds 15% dose increase when taking levothyroxine with breakfast maintains TSH stability

The issue: Food reduces the absorption of levothyroxine (LT4); therefore, dosing guidelines recommend taking it on an empty stomach, typically 30 to 60 minutes before breakfast. Many patients find this inconvenient.

Why this study matters: It randomized 88 adults with hypothyroidism to fasting LT4 intake or LT4 intake with breakfast with a 15% dose increase. The primary outcome, TSH stability, did not differ significantly between groups.

Primary care relevance: For patients who prefer taking LT4 with food, this study provides guidance on dose adjustment.

Endocrine Society Publishes Primary Aldosteronism Recommendations

Adrenal gland and aldosterone

The guidelines are thorough, but are they practical?

The issue: Primary aldosteronism is an underdiagnosed cause of hypertension; screening and confirmatory testing vary in practice.

Primary care relevance: Updated guidance helps identify patients with resistant or hypokalemic hypertension who may benefit from screening and targeted treatment.

Study Finds Rybelsus Lowers Cardiovascular Events in Type 2 Diabetes

Cardiovascular disease

The SOUL Study is a larger and longer version of a previous Rybelsus trial

The issue: Wegovy has been shown to reduce cardiovascular events in type 2 diabetes; the effects of Rybelsus are unknown.

Why this study matters: The SOUL study evaluated the long-term benefit of Rybelsus in adults with type 2 diabetes and established or high cardiovascular risk.

Primary care relevance: Provides evidence on the benefits of Rybelsus for preventing cardiovascular events in patients with type 2 diabetes and established or high cardiovascular risk.

Zoledronate Infusion for Fracture Prevention in Early Postmenopausal Women

Bone density

Study demonstrates effectiveness in reducing fracture risk in postmenopausal women aged 50–60

The issue: Early postmenopausal women at risk for osteoporosis need evidence on when and how to use bisphosphonates.

Why this study matters: This study demonstrated that zoledronate effectively reduced fracture risk in postmenopausal women aged 50 to 60.

Primary care relevance: Provides evidence on the benefits of zoledronate for fracture prevention in early postmenopausal women at risk.

Study Revisits Intensive Blood Pressure Strategy in Diabetes

Blood pressure machine on ECG

BPROAD found intensive BP control reduced CVD in type 2 diabetes, contradicting ACCORD

The issue: Optimal blood pressure targets in type 2 diabetes have been debated; ACCORD suggested no benefit from intensive control, but newer evidence was needed.

Why this study matters: The BPROAD study found that intensive BP control (systolic <120 mmHg) significantly reduced cardiovascular disease in type 2 diabetes, contradicting the older ACCORD trial.

Primary care relevance: Updated evidence supports consideration of intensive BP targets in some patients with type 2 diabetes; guidelines may evolve.

Eye-Opening Study Looks at Prevalence of Secondary Hypertension

doctor checking blood pressure

Cross-sectional study finds secondary hypertension prevalent in 30% of hypertensive adults aged 18–40

The issue: Secondary hypertension is often underdiagnosed; prevalence in young adults was unclear.

Why this study matters: A cross-sectional study found secondary hypertension in about 30% of hypertensive adults aged 18 to 40, highlighting the importance of screening in younger patients.

Primary care relevance: Young adults with hypertension may warrant a higher index of suspicion for secondary causes and appropriate workup.