Poor systematic reviews and meta-analyses may be misleading.
Summerbell
C
C
Higgins
J
J
Garrow
J
J
D004038:Diet, Reducing; D015444:Exercise; D006801:Humans; D015201:Meta-Analysis as Topic; D009765:Obesity / Q000628:therapy*; D012196:Review Literature as Topic; D015431:Weight Loss