Researchers in Spain studied the effects of Qigong practice on blood biochemical variables (Vera et al., 2007). A total of 29 healthy subjects were involved in the study. Sixteen people were in the experimental group and 13 in the control group. The experimental subjects had Qigong practice everyday for one month.
The study found that the experimental group had reduced serum levels of the enzymes including glutamic-oxaloacetic transaminase (GOT), glutamic-pyruvic transaminase (GPT), as well as urea. There were also changes in the enzyme gamma-glutamyltransferase (GGT).
The study suggests that Qigong practice may lead to significant changes in some blood biochemical variables. More studies are necessary to confirm these observations and the relevant mechanisms.
Vera, F. M., Manzaneque, J. M., et al. (2007) Biochemical changes after a qigong program: lipids, serum enzymes, urea, and creatinine in healthy subjects. Med Sci Monit 13, CR560-566.