Research

Energy balance

Intermittent energy restriction (IER) using a 'week-on, week-off' strategy produces weight loss and weight loss maintenance comparable to continuous energy restriction (CER) over 12 months.

If you find daily calorie counting unsustainable, try a 'week-on, week-off' approach. Eat your normal diet for one week, then restrict calories (e.g., to ~1300 kcal) for the next week. Repeat this cycle for a year. This study shows you can achieve the same weight loss and maintenance as eating restricted calories every day, which may help you stick with it longer.

ModerateSupportsMEDIUM confidence
This study indicates that intermittent dieting was as effective as continuous dieting over 8 weeks and for weight loss maintenance at 12 months.
Jennifer Keogh et al. · Clinical Obesity · 2014

Why this rating

Randomized controlled trial with a relatively small sample size (n=75 randomized, fewer completers) and high dropout rate (40% in first 8 weeks), limiting statistical power.

Source

Effects of intermittent compared to continuous energy restriction on short‐term weight loss and long‐term weight loss maintenance

Jennifer Keogh et al. · Clinical Obesity · 2014

DOI 10.1111/cob.12052

rct · n=75Cited 70×
Read the paper
DOI resolved against Crossref · corpus check 2026-06-10

This is one finding among thousands. Every one is graded and traced to its source, so you can see what the evidence actually supports. Browse the research →