Abbie Harvey's gambling addiction was so severe that she could not drive for 20 minutes without pulling over to bet - and felt the urge became worse just before and during her period.
"To get over being emotional, I would use gambling as a coping strategy," said Abbie, who lost more than £20,000 during her decade-long struggle with the addiction.
Abbie is not alone. Kiki Marriott, also a former gambling addict, noticed an increase in her gambling habits during the week before her period.
Both women have received treatment at the Parkland Place Rehabilitation Centre in north Wales, where clinical staff say they believe the menstrual cycle can have an impact on gambling behaviours.
Researchers at the University of Birmingham are now working with the Gordon Moody gambling harms charity to establish whether there is a link between hormonal fluctuations - caused by periods, ovulation, menopause and childbirth - and gambling addiction.
Warning: This article contains references to suicide