Obesity

Isocaloric replacement of ultraprocessed foods was associated with greater weight loss in the Preventing Overweight Using Novel Dietary Strategies (POUNDS) Lost trial

Obesity (Silver Spring)Published Secondary analysis of the POUNDS Lost randomised trial

Authors' conclusion

Isocaloric substitution of UPFs with NOVA 1 + 2 was associated with marginally greater weight loss under energy restriction. These modest findings support more research exploring the mechanisms linking UPFs with body weight regulation beyond energy intake.

Study context

Population
POUNDS Lost trial participants with 24-h dietary recalls; mean age 52.3 years, 85% White, 55% female, 58.2% nonsmoking, mean BMI 32.7 kg/m²trial subset
Participants
356 participants
Comparison
Isocaloric replacement of ultraprocessed foods (UPFs) (NOVA 4) with minimally processed foods and culinary ingredients (NOVA 1 + 2)
Primary endpoint
Weight change associated with replacing %kcal from UPFs with NOVA 1 + 2
Follow-up
6 months
Methodological detailssecondary prospective analysis, multivariable-adjusted substitution models
  • Secondary prospective analysis
  • Multivariable-adjusted substitution models

Primary result

As reported in the abstract

Weight reduction per 10%kcal of UPFs replaced with NOVA 1 + 2

ß

0.51

95% CI −0.93 to −0.09

P = 0.02

Further findings

kg

OutcomeT3T1ß (95% CI)P value
Weight loss by NOVA 1 + 2 tertile · 6 monthsGreater weight loss with T3−8.33−5.32P < 0.001
Body fat percentage reduction per 10%kcal of UPFs replaced with NOVA 1 + 2 · 6 monthsBetween NOVA 1 + 2 and UPFs · associated with greater body fat percentage reduction2.7 (−5.10 to −0.43)P = 0.02
Trunk fat reduction per 10%kcal of UPFs replaced with NOVA 1 + 2 · 6 monthsBetween NOVA 1 + 2 and UPFs · associated with greater trunk fat reduction3.9 (−7.01 to −0.70)P = 0.02

Waist circumference reduction · 6 months

Replacing UPFs with NOVA 1 + 2 not associated with greater waist circumference reduction

Original publication

Isocaloric replacement of ultraprocessed foods was associated with greater weight loss in the POUNDS Lost trial. Obesity (Silver Spring). Published 27 June 2024. doi:10.1002/oby.24044

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