The Chinese' description of yin and yang is essentially the body's homeostasis, where an absolute minute change in toxicity, basicity/Acidicy, or any other imbalance causes the body to deviate from its normal state. There are hundreds, if not thousands of journal entries that justify Acupuncture and eastern medicine's ability to heal, and it doesn't really take a lot of common sense that of the trillions of chemical reactions per second, an imbalance can occurr very easily. But I assume Western Medicine is probably the most correct, right? Drugs created by science couldn't possibly kill people, or keep them sick right? Your ignorance and lack of knowledge on this subject is quite apparent