The association between menstrual cycle and traumatic memories

Area of Science:

• Neuroscience
• Psychology
• Endocrinology

Background:

• The luteal phase of the menstrual cycle is associated with enhanced emotional memory.
• Previous research indicates women in the mid-luteal phase exhibit stronger emotional memories.

Purpose of the Study:

• To investigate the association between experiencing traumatic events during the luteal phase and the severity of traumatic flashback memories.
• To determine if the luteal phase influences the likelihood of developing flashback memories after trauma.

Main Methods:

• A cohort of 138 female patients admitted to hospital following traumatic injury were assessed.
• Data collected included days since last menstruation and the presence of flashbacks.
• Participants were categorized based on their menstrual cycle phase at the time of trauma and at the time of assessment.

Main Results:

• Women who experienced trauma during the luteal phase were more likely to report flashback memories (22% vs. 9%).
• The adjusted odds ratio for flashback memories in the luteal phase during trauma was 3.64.
• Women in the luteal phase at the time of assessment were 4.89 times more likely to experience flashbacks.

Conclusions:

• The luteal phase of the menstrual cycle may be a critical period for the consolidation of trauma memories.
• Increased glucocorticoid release during the luteal phase might play a role in facilitating the storage of traumatic experiences.