When a trained acupuncturist takes to the needle and patient a treatment for preventive and curing methods, then acupuncture is usually a successful process. However, if you have an acupuncturist who has not been properly trained, or who is really not a skilled acupuncturist, then problems can and will happen.
Acupuncture is a safe process when performed by someone who knows what they are doing. However, if not, then things can get a bit sticky. A punctured lung or spinal cord injury can occur if someone doesn't know what they are doing. Though these occurrences are indeed rare, they do happen. A person who hasn't been trained to utilize the proper delivery of acupuncture can damage another person permanently which is why it is so important to know who you go to for acupuncture treatments.
A trained acupuncturist knows the dangers of sharing needles and will always dispose of them after every use. If you find someone who doesn't do this then naturally, you shouldn't just leave but you should also report them due to the dangers and risks of Hepatitis and the risk of HIV and AIDS. The risks are very real if the acupuncturist is not using clean, NEW needles on every person.
People from around the world can just refer to themselves as acupuncturists because at present it is not recognized as a field which would mandate a license to practice. However, you can do your own research and discover where these individuals receive their training and hopefully discover the person is someone you can place your confidence in for treatment.
There are several links you can follow on the internet to discover where the better acupuncturists are located around the world and discover where most of them were trained. The UK has some significant support sites for people interested in acupuncture and for those interested in the people who practice acupuncture.
Acupuncture is very beneficial to the people who are treated using this treatment. However, if you don't find a practicing trained acupuncturist, then the risks associated with acupuncture are real. The risk of infection is a real possible if the acupuncturist uses unsanitary needles and if the needle has been used before, and then the obvious are risk factors with Hepatitis being most realized.
Acupuncturists, for the most part, are very ethical and follow practices to ensure client safety. However, for your better assurance, only go to an acupuncturist who is recommended by someone you trust who also has web credibility.