Kidney disease and thyroid dysfunction: the chicken or egg problem

Area of Science:

• Nephrology
• Endocrinology
• Internal Medicine

Background:

• Patients with non-dialysis-dependant chronic kidney disease (NDD-CKD) and dialysis-dependant chronic kidney disease (DD-CKD) exhibit a higher prevalence of thyroid disorders, especially hypothyroidism, compared to the general population.
• Hypothyroidism in CKD patients is associated with increased mortality rates and may influence kidney function parameters.
• The interplay between kidney and thyroid function is complex and bidirectional, affecting disease progression and patient outcomes.

Approach:

• This review synthesizes current research on the relationship between thyroid disorders and CKD in both adult and pediatric populations.
• It examines the impact of thyroid dysfunction on kidney function markers such as serum creatinine and cystatin C.
• The review discusses emerging evidence on the benefits of treating subclinical hypothyroidism in CKD patients.

Key Points:

• Thyroid disorders are common in CKD patients, with hypothyroidism occurring 2-5 times more frequently.
• Treatment of subclinical hypothyroidism may slow kidney function decline and potentially reduce mortality in CKD.
• Understanding this relationship is crucial for nephrologists managing CKD patients.

Conclusions:

• The bidirectional relationship between thyroid and kidney disease necessitates careful monitoring and management.
• Further prospective studies are required to establish optimal treatment strategies for thyroid dysfunction in pediatric and adult CKD patients.
• Early detection and management of thyroid disorders in CKD may lead to improved patient prognosis and kidney health.