Is menstrual delay due to qi deficiency or blood deficiency?

Generally, delayed menstruation may be caused by qi deficiency or blood deficiency, and judgment should be based on accompanying symptoms. Both conditions can affect the menstrual cycle, but they present differently and require further differentiation according to individual status. Detailed analysis is as follows:

If delayed menstruation is caused by qi deficiency, it typically presents with reduced menstrual flow and pale color, accompanied by symptoms such as fatigue, lethargy, shortness of breath, reluctance to speak, and easy tiredness. Qi deficiency leads to insufficient power to propel blood circulation, causing the endometrium to shed late, thus resulting in delayed menstruation.

When delayed menstruation is caused by blood deficiency, there is usually scanty menstrual flow with bright red or pale red color, possibly accompanied by dizziness, blurred vision, pale or sallow complexion, insomnia with vivid dreams, and palpitations. Blood deficiency results in inadequate nourishment of the endometrium due to insufficient blood supply, leading to slow growth and subsequent menstrual delay.

If the condition leans toward qi deficiency, appropriate consumption of foods such as yam, astragalus, and red dates is recommended, along with avoiding excessive fatigue and ensuring sufficient rest. If the condition leans toward blood deficiency, it is advisable to consume more iron-rich and nutritious foods such as angelica root, wolfberry, spinach, and animal liver, while maintaining regular sleep patterns and avoiding late nights.