Popular Weight-Loss Method Is Light On Evidence

Wrong. Evidence abounds that it fails.

Although the transtheoretical model stages of change (TTM SOC) method is frequently used to help obese and overweight people lose weight, a newly published Cochrane systematic review indicates there is little evidence that it is effective. "The use of TTM SOC only resulted in 2kg or less weight loss, and there was no conclusive evidence that this loss was sustained," says study leader Nik Tuah, who works at Imperial College London.

And the evidence is conclusive.