What causes menstrual periods to always be delayed?

　　"Da Yi Ma" usually refers to menstruation. In general, consistently delayed periods may be caused by factors such as ovarian function decline, endocrine disorders, polycystic ovary syndrome (PCOS), pelvic inflammatory disease (PID), or uterine fibroids. Patients should promptly visit a正规 hospital to identify the underlying cause and receive targeted treatment. Specific analyses are as follows:

　　1. Ovarian Function Decline

　　With increasing age, women's ovarian function gradually declines, restricting follicular development and causing irregular or absent ovulation, which leads to delayed or irregular menstruation. It is recommended to consume more blood-nourishing foods such as spinach and pork liver, as well as hormone-containing foods like royal jelly, donkey-hide gelatin (ejiao), and red dates, which may help alleviate symptoms.

　　2. Endocrine Disorders

　　If women experience prolonged stress, frequent late nights, or irregular lifestyles, their endocrine balance may be disrupted, leading to hormonal imbalances. Changes in estrogen and progesterone levels can prevent normal shedding of the uterine lining, resulting in delayed menstruation. In such cases, medications such as Jia Wei Xiao Yao Wan, Wu Ji Bai Feng Wan, or Yi Mu Cao Granules may be used under medical guidance to improve symptoms.

　　3. Polycystic Ovary Syndrome (PCOS)

　　PCOS is a common endocrine disorder characterized by multiple cysts on the ovaries, impairing normal follicular development and ovulation. This condition often causes menstrual irregularities, prolonged cycles, or delayed periods. Treatment may include medications such as cyproterone acetate tablets, clomiphene citrate tablets, or dydrogesterone tablets, taken as prescribed by a doctor.

　　4. Pelvic Inflammatory Disease (PID)

　　PID is an infection-induced inflammation of pelvic organs, including the uterus, fallopian tubes, and ovaries. It may impair ovarian function and endometrial growth, leading to menstrual cycle disturbances and delayed periods. Most patients also experience lower abdominal pain, fever, and abnormal vaginal discharge. Prompt treatment with antibiotics such as levofloxacin hydrochloride capsules, cefuroxime axetil tablets, or azithromycin capsules should be administered under medical supervision.

　　5. Uterine Fibroids

　　Uterine fibroids are commonly caused by endocrine imbalances or changes in estrogen levels, often resulting in delayed menstruation. It is advisable to seek timely medical evaluation and take medications such as Hong Jin Xiao Jie Pian, Gynecological Hemostatic Pills, or Gui Zhi Fu Ling Pills as directed by a physician. For severe cases, surgical removal of fibroids may be necessary.

　　Additionally, ovarian malignant tumors can also disrupt the menstrual cycle and cause persistent delays in menstruation. It is recommended to promptly visit a gynecology department for evaluation, undergo tests such as complete blood count and sex hormone panel, identify the exact cause, and follow medical advice for appropriate treatment.