• Albert Goldbeter

      Articles written in Journal of Biosciences

    • Ilya Prigogine (1917–2003)

      Albert Goldbeter

      More Details Fulltext PDF
    • A model for the dynamics of human weight cycling

      Albert Goldbeter

      More Details Abstract Fulltext PDF

      The resolution to lose weight by cognitive restraint of nutritional intake often leads to repeated bouts of weight loss and regain, a phenomenon known as weight cycling or “yo-yo dieting”. A simple mathematical model for weight cycling is presented. The model is based on a feedback of psychological nature by which a subject decides to reduce dietary intake once a threshold weight is exceeded. The analysis of the model indicates that sustained oscillations in body weight occur in a parameter range bounded by critical values. Only outside this range can body weight reach a stable steady state. The model provides a theoretical framework that captures key facets of weight cycling and suggests ways to control the phenomenon. The view that weight cycling represents self-sustained oscillations has indeed specific implications. In dynamical terms, to bring weight cycling to an end, parameter values should change in such a way as to induce the transition of body weight from sustained oscillations around an unstable steady state to a stable steady state. Maintaining weight under a critical value should prevent weight cycling and allow body weight to stabilize below the oscillatory range.

  • Journal of Biosciences | News

© 2017-2019 Indian Academy of Sciences, Bengaluru.