Under what circumstances do women not have their menstrual period, except for pregnancy?

Patient's question:

No

Doctor's answer:

Irregular menstruation is caused by factors such as the body's weakened ability to resist disease, depletion of kidney qi, excessive emotions, irregular diet, malnutrition, and systemic diseases, among others. These factors lead to dysfunction in the ovaries and the body's hormone regulation, disrupting the regularity of menstruation and resulting in illness.