Menarcheal age and endemic goitre

Area of Science:

• Endocrinology
• Public Health
• Epidemiology

Background:

• Goitre, an enlargement of the thyroid gland, is a public health concern, particularly in iodine-deficient regions.
• Menarcheal age is a key indicator of sexual maturation and overall adolescent health.
• Understanding factors influencing menarcheal timing is crucial for assessing population health and developmental trends.

Purpose of the Study:

• To investigate the relationship between goitre prevalence and the age of menarche in Sri Lankan schoolgirls.
• To determine if living in goitre-endemic areas affects sexual maturation timing.

Main Methods:

• A cross-sectional study involving 13,566 schoolgirls from 17 districts in Sri Lanka.
• Data collection included recalled age at menarche and assessment for the presence and severity of goitre.
• Statistical analysis compared mean menarcheal ages between girls with and without goitre, and across different prevalence areas.

Main Results:

• Girls without goitre had a mean menarcheal age of 13.6 years, significantly lower than the 13.9 years observed in the goitrous group.
• Mean menarcheal age increased with goitre severity (lowest for grade 0, highest for grade 1b and above).
• Girls in high goitre prevalence areas had a significantly later mean age of menarche, regardless of goitre status.

Conclusions:

• Findings suggest a delay in sexual maturation among girls residing in goitre-endemic regions.
• The presence of goitre is associated with a later age at menarche, indicating potential impacts on reproductive development.
• Goitre prevalence may serve as an indicator for delayed adolescent sexual maturation in affected populations.