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Dairy food consumption and meal-induced cortisol response interacted to influence weight loss in overweight women undergoing a 12-week, meal-controlled, weight loss intervention.
Witbracht, Megan G; Van Loan, Marta; Adams, Sean H; Keim, Nancy L; Laugero, Kevin D.
Afiliación
  • Witbracht MG; Department of Nutrition, University of California, Davis, CA, USA.
J Nutr ; 143(1): 46-52, 2013 Jan.
Article en En | MEDLINE | ID: mdl-23190756
Dairy food enhances weight loss in animal models, possibly by modifying the metabolic effects of cortisol. This study determined in overweight women (ages 20.0-45.9 y; n = 51) whether including dairy food in an energy-restricted diet affects cortisol concentrations and whether differences in provoked cortisol explain the magnitude of weight loss. Women received either an adequate amount of dairy food (AD), the equivalent of ≥711 mL/d milk, or a low amount of dairy food (LD), the equivalent to ≤238 mL/d milk, in a 12-wk, energy-restricted dietary intervention. Participants were tested in a 12-h laboratory visit, which included 2 standard meals and a dinner buffet that was consumed ad libitum. Salivary cortisol was measured from waking to bedtime. Energy restriction increased (P ≤ 0.04) the minimum and decreased (P ≤ 0.02) the diurnal amplitude in the salivary cortisol concentration from baseline to postintervention. Energy restriction enhanced the dinner meal-stimulated salivary cortisol response (DMR) (P ≤ 0.02) but only in the LD group. Compared with the LD treatment, the AD treatment induced (P ≤ 0.04) greater reductions in body weight and fat, but only in women characterized as having a baseline DMR (responders) (n = 26); weight and fat lost in the AD and LD groups were similar in nonresponders (n = 25). Overall, energy restriction dampened diurnal salivary cortisol fluctuations [symptomatic of hypothalamic-pituitary-adrenal (HPA) axis dysfunction] and enhanced dinner meal-stimulated salivary cortisol concentrations. The AD treatment prevented the latter. Furthermore, certain phenotypic markers of HPA axis function may help to expose the weight-reducing effects of consuming dairy food.
Asunto(s)

Texto completo: 1 Colección: 01-internacional Banco de datos: MEDLINE Asunto principal: Sistema Hipófiso-Suprarrenal / Saliva / Hidrocortisona / Productos Lácteos / Dieta Reductora / Sobrepeso / Sistema Hipotálamo-Hipofisario Tipo de estudio: Clinical_trials Límite: Adult / Female / Humans / Middle aged País/Región como asunto: America do norte Idioma: En Revista: J Nutr Año: 2013 Tipo del documento: Article País de afiliación: Estados Unidos

Texto completo: 1 Colección: 01-internacional Banco de datos: MEDLINE Asunto principal: Sistema Hipófiso-Suprarrenal / Saliva / Hidrocortisona / Productos Lácteos / Dieta Reductora / Sobrepeso / Sistema Hipotálamo-Hipofisario Tipo de estudio: Clinical_trials Límite: Adult / Female / Humans / Middle aged País/Región como asunto: America do norte Idioma: En Revista: J Nutr Año: 2013 Tipo del documento: Article País de afiliación: Estados Unidos