Green Tea Intake: A Protective Factor Against Postsurgical Hypothyroidism and Hypoparathyroidism

Area of Science:

• Endocrinology
• Nutritional Epidemiology
• Genetic Epidemiology

Background:

• Tea and coffee are widely consumed beverages with known health benefits.
• The relationship between tea/coffee consumption and postsurgical hypothyroidism and hypoparathyroidism (PHypoTP) remains under investigation.

Purpose of the Study:

• To investigate the potential causal effect of tea and coffee intake on the risk of developing PHypoTP.
• To explore whether habitual consumption of these beverages influences postsurgical endocrine health.

Main Methods:

• Utilized a two-sample Mendelian randomization (MR) design.
• Employed the inverse-variance-weighted method as the primary analysis approach.
• Applied MR-Egger, MR-PRESSO, weighted median, simple mode, and weighted mode to assess pleiotropy and heterogeneity.

Main Results:

• Green tea consumption was causally associated with a reduced risk of PHypoTP (β = -0.019, P = .029).
• No significant association was observed between coffee intake and the risk of PHypoTP.
• No evidence of heterogeneity or pleiotropy was detected in the analyses.

Conclusions:

• Genetic evidence supports green tea intake as a protective factor against PHypoTP.
• Recommends considering green tea consumption for patients post-thyroidectomy as part of dietary guidance.
• Highlights the potential role of green tea in managing postsurgical endocrine complications.