It's All in the Parameters: A Critical Analysis of Some Well-Known Negative Studies on Low-Level Laser Therapy

Abstract

A study of 1,200 papers on LLLT has resulted in 85 positive and 35 negative double-blind studies. The negative studies have been scrutinized carefully in an effort to pinpoint possible reasons for the failures. In the following, the majority are double-blind studies, but some non-blinded and animal studies have been included to give typical examples of pitfalls.