What is the normal endometrial thickness?
The endometrium plays a critical role in embryo implantation and is essential for successful pregnancy. Both excessively thin and abnormally thick endometrium can impair fertility. Endometrial thickness varies dynamically throughout the menstrual cycle.
So, what constitutes a normal endometrial thickness? Let’s explore this together.
Normal Endometrial Thickness
Under normal physiological conditions, endometrial thickness typically ranges from approximately 5 mm to 10 mm. However, this thickness fluctuates significantly across different phases of the menstrual cycle. During the proliferative phase, the endometrium usually reaches about 10 mm in thickness; during menstruation, it thins to approximately 5 mm; and during the secretory phase—often mistakenly referred to as the “constipation period” in the original text (a likely typographical error)—it may again reach around 10 mm. In summary, endometrial thickness changes primarily in response to ovarian hormonal fluctuations across the menstrual cycle.

Management of Endometrial Hyperplasia
1. Lifestyle Modifications
For patients with mild disease, lifestyle adjustments can effectively help manage the condition. Recommended dietary measures include consuming blood-activating and qi-tonifying foods such as black fungus, donkey-hide gelatin (ejiao), and black-boned chicken. Additionally, patients should engage in moderate physical activity, maintain a healthy weight, and practice stress management.
2. Pharmacological Therapy
For younger patients, those desiring future fertility, or those with milder forms of endometrial hyperplasia, hormonal therapy is often appropriate. Treatment primarily focuses on regulating estrogen secretion. Patients are strongly advised to select medications under the guidance of a qualified healthcare provider.
3. Surgical Intervention
For older patients without fertility requirements—or those exhibiting precancerous or malignant changes—hysterectomy may be considered. This definitive treatment eliminates the risk of progression and safeguards long-term health. Patients are advised to seek care at reputable medical institutions.
The above outlines normal endometrial thickness values and common management strategies for endometrial hyperplasia. We hope this information is helpful to you.