Effectiveness of a Medicine

For the treatment of choice or therapeutic method to prevent and must be based on a symptom of the disease or on objective data to prove its safety and effectiveness are based.

However, there are several levels of evidence. Only to be confirmed by a neighbor on the effectiveness of a medicine (evidence) is very weak evidence. The same statement from a large number of people are certainly more weight, but is still far from conclusive evidence that a particular approach has its supporters, although its usefulness is questionable goal.

The fact that treatment will be used for many years, even centuries, is not conclusive evidence of their effectiveness. Just think of the bloodshed, which was practiced thousands of years ago, but we now know to be dangerous and even deadly, because it weakens the already sick patient. However, since a long time this practice is effective and was used widely since ancient times to the twentieth century.