Humor therapy is completely safe. Your doctor is likely to approve of any efforts you make to use humor therapy, even if he or she is not aware of any medical benefits that may result. Since it is also inexpensive, risk-free, and readily available, there is little reason not to try practicing humor therapy.
Always tell your doctor if you are using an alternative therapy or if you are thinking about combining an alternative therapy with your conventional medical treatment. It may not be safe to forgo your conventional medical treatment and rely only on an alternative therapy.