It is verified that without proper instruction many patients will fail to gain progress. Please don't think qigong is just a lie. People will ask us what the mechanism of qigong is. Generally speaking, like in a rice field, western doctors always have tradition of using all their means to kill the weeds. But in the meantime the rice shoots incur damage, more or less.
Most patients know what the results is.
But for qigong practice, at beginning it will directly strengthen patients immune system and more. As like to let the rice shoots get stronger and stronger, the weeds will have less and less effects upon the rice shoots. As the process continues, sometime the weeds will have no effect upon the rice shoots. Later the time will come to let the rice shoots overpower weeds. And people naturally know why qigong can prolong patients' life span, at least.