Table 1 Structure of the dietary modification intervention for reduction of exposure to EDCs

Small-group education (90 min)

Introduction (10 min.)

Welcome and information about the research process

Lecture with PPT

Understanding of EDCs (30 min)

Definition of EDCs

Lecture with PPT

Sources of EDCs in food, cooking, & containers

Mechanism of EDCs, women’s menstruation, & reproductive health

Self-appraisal (15 min)

Self-check of the degree of exposure to EDCs

Survey and comparison with peers

Seeking solutions for minimizing exposure to EDCs (25 min.)

Identification of strategies to reduce BPA exposure in dietary habits

Lecture with PPT and discussion

Self-contract (10 min.)

Making self-contract for the reduction of fast/processed food consumption

Writing a contract

Follow-up monitoring (4 weeks)

Monitoring by theresearch team

Confirmation of the checklist

Feedback on practice

Encouragement for empowering

Online messages from the research assistant in each of the three groups

Peer support via social network communication (4 weeks)

Communication with peers

Sharing experiences with peers

Social networking among the group members