Why it gets harder to keep losing weight

Original Title

Caloric restriction-induced metabolic adaptation associated with amount of body weight lost – results from the LION study

Not medical advice. For informational purposes only. Always consult a healthcare professional. Terms

Summary

When people lose weight by eating less, their bodies slow down metabolism to save energy — like a car using less gas after you drive less.

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Surprising Findings

The more weight you lose, the more your metabolism slows down—strongly correlated (β=0.005, p=0.003).

Most assume metabolic adaptation is fixed or random, but this shows it’s directly proportional to weight loss—meaning extreme dieters pay a higher metabolic price.

Practical Takeaways

Aim for moderate weight loss (5–10% of body weight) to minimize metabolic adaptation and improve long-term maintenance.

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Publication

Journal

Adipositas - Ursachen, Folgeerkrankungen, Therapie

Year

2025

Authors

C Blanken, A Reik, H Hauner, C Holzapfel