Different mechanisms underlie post-menarchial increase in depression and weight

Area of Science:

• Adolescent health
• Mental health
• Obesity research

Background:

• Depression and overweight are common co-occurring health issues in adulthood.
• Adolescence, particularly for girls, is a critical period for the onset and escalation of both depression and obesity.
• Pubertal development coincides with weight gain, making its role in the depression-overweight association unclear.

Purpose of the Study:

• To investigate the relationship between depressive mood, body weight, and pubertal status in adolescent girls.
• To determine if pubertal development mediates the association between depression and overweight in young females.

Main Methods:

• A cross-sectional study involving 962 Dutch adolescent girls aged 11.9–15.9 years.
• Height and weight measurements were used to calculate standardized body weight (zBMI).
• Depressive mood was assessed using the Center for Epidemiological Studies-Depression (CES-D) inventory, and menarcheal status (pre- or post-menarche) was recorded.

Main Results:

• Menarcheal status showed a significant correlation with body weight (r=0.34) and depressive mood (r=0.20).
• Depressive mood did not affect the correlation between menarcheal status and body weight.
• Body weight did not affect the correlation between menarcheal status and depressive mood.
• The small correlation between depressive mood and body weight (r=0.12) diminished substantially after accounting for menarcheal status.

Conclusions:

• Menarcheal status is a key factor explaining the association between body weight and depression in adolescent girls.
• Menarcheal status is independently linked to both BMI and depressive mood.
• Distinct biological mechanisms likely underlie the increased prevalence of depression and overweight observed post-menarche.