From the TCM perspective, the kidney, spleen and liver are the three most relevant internal organs affecting the functions of the female reproductive system.
One of the major functions of the kidney is to store the kidney Jing (the essence of life), which includes pre-natal Jing (inherited from parents, and not replaceable) and post-natal Jing (acquired from food and replaceable). The kidney Jing can be transformed into blood and kidney Qi, which becomes the source of human growth, development and reproduction.
According to TCM, the variation of kidney Jing supply produces significant physiological changes in a woman’s life every seven years. At seven, a girl starts to mature into a young woman; at 14, she has her first menstruation and is able to conceive; at 21 and 28, she reaches her most fertile years; at 35, her fertility starts to diminish; at 42, her fertility is low and at 49, a woman’s kidney Jing is depleted, and therefore, she menopauses.
The main functions of the spleen are to transform food nutrients to Qi, blood and post-natal Jing and to keep the blood circulating within the vessels.
Two of the major functions of the liver are to regulate Qi (vital energy) and blood, and to store blood.