Jing – it’s what you’re made of.
CAUTION: Includes explicit topics related to reproductive health.
In Chinese physiology, there is a substance that each of us possesses called jing – it’s often translated into English as “essence” or “vitality”. Jing is said to be stored in the kidneys and is believed to decline with age. In fact, the definition of aging in Chinese medicine is the loss of jing. Brittle bones, thin skin, hair loss, and cognitive decline are all symptoms of jing deficiency. Your jing is your genetic integrity and it is inherited from your parents. In this sense, congenital birth defects are also considered a jing deficiency. This substance is a very yin substance and is said to be related to the Water element through it’s association with the Kidney. This makes sense, as Water has a relationship to one’s ancestors and to the past. Adequate jing is necessary for healthy reproduction and for sexual function. It is also necessary for growth and development, particularly of the bones and bone marrow. Going through puberty is like receiving a shot of stored jing from our kidneys.
Overwork, overthinking, age, and chronic oxidative damage are all things that can detract from one’s jing. Kidney yin deficiency and Kidney yang deficiency, if both present and profound enough, can equate to jing deficiency. It is considered a precious substance and is given to you at birth in a finite amount, so it’s best not to waste it by “burning the candle at both ends”. Whenever you work beyond your means (i.e. spend all the qi you have to give in a day and continue working), you drain your jing. It is said that whenever you go to bed without using up all your qi for that day, some of that qi gets transformed into jing – like change in a piggy bank.
To get at the importance of having a healthy storage of jing, I often compare it to a similar concept from another traditional healing system – Ayurveda. In Ayurvedic medicine, there is a substance believed to be contained in the heart called ojas. Each individual is born with only eight drops of ojas – when those eight drops are used up, the person dies.
There are some gender differences when it comes to jing-metabolism.
It is said that 100 drops of Blood is worth 1 drop of jing. This is where it gets more interesting – it is also said that 30 drops of semen is worth 1 drop of jing.
There are a few different statements being made here. One is that, the more yin a substance, the closer it’s relationship with jing. Semen is more yin than blood. It is also making the important point that men are at a higher risk of developing jing deficiency through lifestyle than women are.
Granted, childbearing is a remarkably jing-intensive process. However if a woman is careful and has prepared her body before bearing a child (by nourishing her blood and jing), then her jing will not suffer and both her and the baby will be healthy. When a woman’s body is not prepared to give birth, the baby pulls on the mother’s essence and women often lose bone density or teeth as a result of bearing a child. The biggest challenge for women is the cyclical loss of blood, which can have quite a pernicious effect on a woman’s health if not regulated and kept in balance. However, for men, the frequent and unregulated loss of semen, from the Chinese medical perspective, can pose much greater health risks – theoretically shortening a man’s life.
For more information on how jing works in men and what they can do to prevent the loss of essence, see this article. (CAUTION: Explicit topics.)
Be good to your body. Take care of the vitality you were given.