Abstract
Exposure to inescapable shock typically reduces eating and body weight in rats. The present study examined the modulation of stress effects by prestress diet and poststress sugar availability. Maintenance on a high-fat, high-energy food attenuated stress-induced weight loss and anorexia and increased high-energy food selection when a low-energy wet mash was the only alternative. Access to sugar after stress also reduced short-term weight loss; among rats maintained on high-energy food, body weight was spared absolutely. The dependence of stress effects on pre- and poststress diet alternatives may speak to individual differences in the stress-eating relationship in humans. More generally, these results support a conceptualization of stress in terms of metabolic challenge and the integrated reorganization of energy regulatory processes.
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