Why has my menstrual cycle, which used to be very regular, suddenly stopped? What should I do?
Generally, "Yima" refers to menstruation. If menstruation, which has been regular, suddenly stops, it may be related to excessive mental stress, changes in lifestyle habits, medication effects, endocrine disorders, polycystic ovary syndrome (PCOS), and other factors. If discomfort symptoms occur, timely medical consultation is recommended for symptomatic treatment under the guidance of a qualified physician. Detailed explanations are as follows:

1. Excessive Mental Stress
Long-term mental stress or emotional tension may affect the hypothalamic-pituitary-ovarian axis, thereby disrupting the menstrual cycle. It is recommended to adjust your mindset and relieve stress through exercise, listening to music, communicating with friends, and other methods.
2. Lifestyle Changes
Excessive dieting, strenuous exercise, staying up late, and other unhealthy lifestyle habits may lead to malnutrition and metabolic disorders, thus affecting the menstrual cycle. It is recommended to maintain healthy lifestyle habits and avoid excessive dieting or strenuous physical activity.
3. Medication Effects
Medications such as contraceptives, antidepressants, and antitumor drugs may interfere with the endocrine system, leading to menstrual irregularities. It is recommended to communicate with your doctor promptly regarding possible discontinuation or switching of medications.
4. Endocrine Disorders
Endocrine disorders may be caused by environmental and emotional factors. Hormonal imbalances due to endocrine disorders can interfere with the normal growth and shedding of the endometrium, thus affecting the menstrual cycle. Symptoms often include dull complexion, obesity, and breast tenderness. Treatment may follow medical advice to use medications such as Xiaoyao Pills, Wuji Baifeng Pills, and Tanshinone Injection.
5. Polycystic Ovary Syndrome (PCOS)
Polycystic ovary syndrome may be caused by genetic and environmental factors. Patients often experience hormonal imbalances that affect endometrial growth and shedding, leading to irregular or absent menstruation. Common symptoms include acne, obesity, and oily skin. Treatment may include medications such as Dydrogesterone Tablets, Progesterone Capsules, and Spironolactone Tablets, under a doctor's guidance.
In daily life, maintaining a regular sleep schedule and consuming more soy products, lean meat, milk, and other foods rich in iron and protein is recommended to support overall health.