Does a healthy diet help weight management among overweight and obese people?

Nazmus Saquib, Cheryl L. Rock, Loki Natarajan, Shirley W. Flatt, Vicky A. Newman, Cynthia A. Thomson, Bette J. Caan, John P. Pierce

Research output: Contribution to journalArticlepeer-review

10 Scopus citations


A randomized dietary intervention trial across 4 years examined diet, weight, and obesity incidence (body mass index [BMI] ĝ‰¥ 30 kg/m 2) differences between study groups. Participants were 1,510 breast cancer survivors with BMI ĝ‰¥ 25 kg/m 2 at entry. Dietary intake was assessed yearly by telephone; weight and height were measured at clinic visits. Intervention participants consumed more fruit, vegetables, and fiber and less energy from fat than control participants during follow-up cross-sectionally (p <.0001) and longitudinally (p <.0001); weight did not differ between study groups at any follow-up visit, and significant weight change difference was observed between groups only in the 1st year (p <.0001). Diet and weight results remained unchanged after stratifying by age and BMI. No difference in obesity incidence was found during follow-up (p >.10) among overweight members of either study group. Without specific efforts to reduce total energy intake, dietary modification does not reduce obesity or result in long-term weight loss.

Original languageEnglish (US)
Pages (from-to)518-531
Number of pages14
JournalHealth Education and Behavior
Issue number3
StatePublished - Jun 2009


  • Body weight
  • Clinical trial
  • Energy from fat
  • Fruit
  • Total fiber
  • Vegetables

ASJC Scopus subject areas

  • Arts and Humanities (miscellaneous)
  • Public Health, Environmental and Occupational Health


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