Postnatal nutritional iron deficiency impairs dopaminergic-mediated synaptic plasticity in the CA1 area of the hippocampus.

Objectives: Developmental iron deficiency (ID) has been shown to put children at risk for compromised learning and memory capacity, and it has also been shown to impair hippocampus-dependent forms of memory as well as hippocampal synaptic transmission. Catecholamines are known to play a pivotal role in memory consolidation, and studies have demonstrated that perinatal ID alters dopaminergic systems in various brain areas. It is not known, however, whether perinatal ID impairs dopaminergic synaptic plasticity in learning and memory structures such as the hippocampus.

Effect of honey versus sucrose on appetite, appetite-regulating hormones, and postmeal thermogenesis.

Objective: Increased per capita consumption of sweeteners may be responsible in part for the rising prevalence of obesity in the United States. Recent studies suggest that consumption of honey is not associated with this same obesogenic effect and may have beneficial effects neuro on body weight. The purpose of this study was to evaluate whether the meal-induced responses of ghrelin and peptide YY(3-36) (PYY(3-36)) and/or meal-induced thermogenesis differ following a honey- versus a sucrose-containing meal.