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Heavy metal profiles in teas and herbal infusions: a cross-country analysis

Sousa, Ana; Azevedo, Rui; Richardeau, Agathe; Almeida, Agostinho; Couto, Cristina; Ribeiro, Cláudia; Gonçalves, Virgínia; Ribeiro, Ana Rita; Pádua, Inês

Background: Teas and herbal infusions (THIs) are valued for their health benefits but may contain heavy metal impurities, posing health risks due to bioaccumulation and toxicity [1]. Heavy metal contamination in THIs is linked to anthropogenic sources like pollution, soil contamination, irrigation, fertilizers, and food processing equipment [2]. With the rising consumption of THIs, monitoring heavy metal contam...

Date: 2025   |   Origin: Scientific Letters

Evaluating the impact of high sugar diet on juvenile rats: a histomorphological...

Ferreira, Francisca; Leal, Sandra; Garcez, Fernanda; Nogueira, Sofia

Background: Intestinal barrier is an important structure that defends and maintains the homeostasis of the host. [1-3]. It is highly influenced by food due to the interaction between nutrients and gut microbiota [2]. A diet rich in sugar can disrupt gut homeostasis, leading to a dysfunctional barrier and causing chronic diseases [3]. The enterochromaffin cells (ECs) are dispersed throughout the intestine wall, ...

Date: 2024   |   Origin: Scientific Letters

Environmental contamination as a source of multi-toxics via maternal exposure a...

Carrola, João Soares; Gonçalves , Carla; Bento, Alexandra; Dinis-Oliveira , Ricardo Jorge; Leal, Sandra

Background: Environmental pollution exposes human to various toxics. Food is one main route of toxic exposure, encompass pesticides, per- and polyfluoroalkyl substances (PFAS), polycyclic aromatic hydrocarbons (PAHs), polychlorinated biphenyls (PCBs), metals and nanoplastics [1]. Maternal exposure is a concern due to rising childhood neurodevelopmental disorders like autism spectrum disorders (ASD) [1,2] and en...

Date: 2024   |   Origin: Scientific Letters

Tramadol and Tapentadol Induce Conditioned Place Preference with a Differential...

Barbosa, Joana; Leal, Sandra; Pereira, Frederico C.; Dinis-Oliveira, Ricardo Jorge; Faria, Juliana

Tramadol and tapentadol, synthetic opioids commonly prescribed for moderate-to-severe pain, have a unique pharmacology that optimizes their analgesia and safety. However, they are not devoid of risks, presenting addictive, abuse, and dependence potential. While tramadol-reinforcing properties have been documented by various studies with human and animal models, including conditioned place preference (CPP) assay...


Association between Elevated Iodine Intake and IQ among School Children in Port...

Carvalho, Irene P.; Peixoto, Bruno; Caldas, José Carlos; Costa, Ana; Silva, Sofia; Moreira, Bárbara; Almeida, Agostinho; Moreira-Rosário, André

The goal of this work was to examine whether elevated iodine intake was associated with adverse effects on IQ among school-age children in Portugal. In a representative sample of children from the north of the country, IQ percentiles by age (assessed with Raven’s Colored Progressive Matrices) were dichotomized to <50 (“below-average” IQs) and ≥50. Morning urine iodine concentrations, corrected for creatinine, w...


Association between elevated iodine intake and IQ among school children in Port...

Carvalho, Irene P.; Peixoto, Bruno; Caldas, José Carlos; Costa, Ana; Silva, Sofia; Moreira, Bárbara; Almeida, Agostinho; Moreira-Rosário, André

The goal of this work was to examine whether elevated iodine intake was associated with adverse effects on IQ among school-age children in Portugal. In a representative sample of children from the north of the country, IQ percentiles by age (assessed with Raven’s Colored Progressive Matrices) were dichotomized to <50 (“below-average” IQs) and ≥50. Morning urine iodine concentrations, corrected for creatinine, w...


Neurocognitive functioning in acute coronary syndrome: ventricular ejection fra...

Graça, Gabriela; Sousa, Ana; Ribeiro, Cláudia; M. F. Gonçalves, Virgínia; Barbosa, Joana; Leal, Sandra; Peixoto, Bruno




Editorial Ciências da Nutrição

Leal, Sandra

Editorial da Coeditora de Ciências da Nutrição, Prof.ª Doutora Sandra Leal.


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