Obesity is associated with an altered autonomic nervous system response to nutrient restriction.

Wijngaarden MA, Pijl H, van Dijk KW, Klaassen ES, Burggraaf J

Heart rate variability (HRV) reflects the balance of activities of sympathetic and parasympathetic components of the autonomic nervous system. We compared HRV parameters in response to a prolonged fast in obese versus normal weight humans. In addition, the effect of weight-loss was evaluated in obese individuals.