None that are serious. Approximately five to ten percent of people being treated for the first time with acupuncture may experience a brief exacerbation of symptoms, light-headedness or mild nausea. An exacerbation of symptoms may last up to 24 hours and is almost always followed by a marked improvement afterward. These effects rarely happen more than once. Acupuncture's theoretical models are not based on faith.
Acupuncture works on horses, dogs, babies, and people in comas.
Its world view arises from empirical observation, and the acid test for the validity of the view is the result of its application by skillful practitioners. Once eligibility has been established, applicants must pass extensive examinations in acupuncture theory and practice. Formal training and testing in clean needle technique is also required. Recently, most acupuncturists train for 2500 hours or more before taking the national exam. In addition to training and credentials, there are other important factors.