月水不利而无子者，由风寒邪气客于经血，则令月水痞涩，血结子脏，阴阳之气不能施化，所以无子也。
月水不通而无子者，由风寒邪气客于经血。夫血得温则宣流，得寒则凝结，故月水不通
。冷热血结，搏子脏而成病，致阴阳之气不调和，月水不通而无子也。
月水久不通，非止令无子，血结聚不消，则变为血瘕；经久盘结成块，亦作血症
。血水相并，津液壅涩，脾胃衰弱者，水气流溢，变为水肿。如此难可复治，多致毙人。
《养生方》云∶少时，若新产后，急带举重，子阴挺出或倾邪，月水不泻，阴中激痛，
下塞，令人无子。
子脏冷无子者，由将摄失宜，饮食不节，乘风取冷，或劳伤过度，致风冷之气乘其经血
，结于子脏，子脏则冷，故无子。
带下无子者，由劳伤于经血，经血受风邪则成带下。带下之病，白沃与血相兼带而下也
。病在子脏，胞内受邪，故令无子也。
诊其右手关后尺中脉，浮为阳，阳绝者，无子户脉也。苦足逆冷，带下故也。
五脏之气积，名曰积。脏积之生，皆因饮食不节，当风取冷过度。其子脏劳伤者，积气
结搏于子脏，致阴阳血气不调和，故病结积而无子。
《养生方》云∶月水未绝，以合阴阳，精气入内，令月水不节，内生积聚，令绝子，不复产乳。
月经不畅而不孕的，是由于风寒邪气侵入经脉与血液之中，导致月经阻滞涩滞，血液凝结于子宫（子脏），阴阳之气无法交感化生，所以不能受孕。
月经不通而不孕的，也是由于风寒邪气客居于经血之中。血液遇到温暖则流通宣散，遇到寒冷则凝结停滞，因此月经不通。冷血与热血相互搏结，凝聚在子宫形成病变，致使阴阳之气不调和，月经不通而不能受孕。
月经长期不通，不仅会导致不孕，如果血液结聚不散，就会转变为“血瘕”（腹内结块的病证）；日久盘结形成块状，也会成为“血症”。血与水湿相互搏结，津液壅塞涩滞，若脾胃功能衰弱，水气流溢扩散，就会转变为水肿。这种情况很难再治愈，大多会导致死亡。《养生方》说：年轻时，或者刚生产后，急忙从事重体力劳动，导致阴道脱出或倾斜歪斜，月经排泄不畅，阴部剧烈疼痛，下部堵塞，使人不孕。
子宫寒冷而不孕的，是由于调养不当，饮食没有节制，迎风受寒，或者劳累损伤过度，导致风冷之气乘虚侵入经血，凝结在子宫，使子宫变冷，所以不能受孕。
带下病导致不孕的，是由于劳累损伤了经血，经血受到风邪侵袭就形成带下病。带下病的表现是白色分泌物与血液混合一起流出。病位在子宫，胞宫内受到邪气侵犯，所以导致不孕。
诊察患者右手关后尺部的脉象，浮取为阳脉，如果阳脉断绝，这是无子之户的脉象。患者苦于双脚逆冷，这是带下病所致。
五脏之气积聚，称为“积”。脏积的产生，都是因为饮食不节制，当风取冷过度。如果子宫因劳累而受伤，积气结聚搏动在子宫，导致阴阳气血不调和，所以发生结积病而不能受孕。
《养生方》说：月经尚未结束，就进行房事，精气进入体内，导致月经失调，体内产生积聚，使人绝育，不再能生育哺乳。
Infertility due to irregular menstruation arises from wind-cold pathogenic factors invading the meridians and blood, causing menstrual flow to become obstructed and astringent. Blood coagulates in the uterus (Zi Zang), preventing the interaction and transformation of Yin and Qi, thus resulting in infertility.
Infertility due to amenorrhea is also caused by wind-cold pathogenic factors lodging in the menstrual blood. Blood flows freely when warmed but coagulates when chilled; therefore, menstruation ceases. Cold and hot blood contend and coalesce within the uterus, forming pathology and disrupting the harmony of Yin and Qi, leading to amenorrhea and infertility.
Prolonged amenorrhea not only causes infertility but, if blood accumulates and fails to dissipate, transforms into "Xue Jia" (blood mass). Over time, it forms hard masses, becoming a "Blood Disease." When blood and water combine, body fluids become congested and astringent. In cases of weak Spleen and Stomach function, water qi overflows and spreads, transforming into edema. Such conditions are difficult to treat and often prove fatal. The *Yang Sheng Fang* states: In youth or immediately postpartum, engaging in heavy labor can cause vaginal prolapse or deviation, resulting in impaired menstrual discharge, severe pain in the genital region, lower obstruction, and subsequent infertility.
Infertility due to a cold uterus results from improper care, unregulated diet, exposure to wind and cold, or excessive physical strain. These factors allow wind-cold qi to invade the menstrual blood and condense in the uterus, chilling the organ and causing infertility.
Infertility associated with leukorrhea stems from exertion damaging the menstrual blood. When this blood is invaded by wind pathogens, leukorrhea develops. This condition involves the mixing of white discharge with blood flowing downward. Since the pathology resides in the uterus and the interior of the Bao Luo (uterine cavity) is affected by pathogens, infertility ensues.
Palpation of the Chi position on the right hand behind the Guan position reveals that a floating pulse indicates Yang. If the Yang pulse is absent, it signifies a pulse pattern of infertility. Complaints of cold extremities are attributed to leukorrhea.
The accumulation of Qi in the five Zang organs is termed "Ji" (accumulation). The formation of Zang accumulations is caused by dietary indiscretion and excessive exposure to wind and cold. If the uterus is injured by exertion, accumulated Qi knots and contends within the uterus, disrupting the harmony of Yin-Yang and Blood-Qi, resulting in accumulation pathology and infertility.
The *Yang Sheng Fang* states: Intercourse before menstruation has completely ceased allows essence and Qi to enter the interior, causing menstrual irregularity and internal accumulation. This leads to sterility and the inability to bear children or nurse.