Le fluor joue un r�le important dans la sant� des dents et du squelette. Il a �t� largement �tudi� et d�battu. Si le fluor � des concentrations appropri�es est b�n�fique, un apport excessif de fluor, en particulier chez les enfants, peut entra�ner de graves probl�mes de sant� tels que la fluorose dentaire, la fluorose squelettique et la fluorose non squelettique. La surexposition � long terme au fluorure, en particulier dans les zones end�miques, a �t� associ�e � une s�rie d'effets n�fastes sur la sant�, notamment la neurotoxicit�, qui affecte le d�veloppement de l'intelligence chez les enfants. Le QI est une mesure de l'intelligence d�riv�e de tests standardis�s. De nombreuses �tudes men�es dans le monde entier ont syst�matiquement d�montr� une relation inverse entre l'exposition au fluor et les niveaux de QI chez les enfants. Bien que les preuves sugg�rent une association entre l'exposition au fluor et un QI plus faible, ces r�sultats ne sont pas concluants et ne peuvent pas �tre g�n�ralis�s. Le QI est influenc� par de multiples facteurs, qui n'ont pas �t� �valu�s de mani�re ad�quate dans ces �tudes. Pour �tablir une relation de cause � effet, nous avons besoin d'�tudes longitudinales qui tiennent compte de ces facteurs de confusion afin de mieux comprendre et d'att�nuer l'impact potentiel du fluorure sur l'intelligence.

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Description de la librairie

**Please note our transit times are from the date of dispatch.** We first started out as ?The Paperback Exchange,? a chain of physical bookstores where we would part exchange your beloved books for new stories to transport you to faraway places. However, as shopping started to evolve to online shops and marketplaces, we bid our stores goodbye to become ?PBShop.? This transition has only allowed us to blossom as we now ship thousands of titles to book lovers across the globe. We pride ourselves in being a community of local book lovers which allows our passion and devotion to shine in everything we do. In 2020 we not only celebrated our 20th birthday but our 1st birthday as being completely employee owned after becoming an E.O.T in September 2019. We are proud to be different and embrace standing apart on a book mountain by working from a virtual inventory which allows us to provide thousands of books that may be difficult to get for your bookshelf or your studies. Working with a number of different suppliers allows us to explore other avenues such as puzzles, sheet music and even stationery so we really do have something for everyone. Life is about being versatile in all realms of existence. If this is your first purchase with us, or you are a returning customer, we would like to welcome you to the PBShop family, for there is no friend as loyal as a book. We are a company who put our customers at the centre of everything we do as we understand the importance of reading because once you learn to read, you will forever be free. There are a whole lot of things in this world of ours that we are yet to explore, which is why we will forever inspire curious minds.

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Pbshop.co.uk
Unit 22 Horcott Industrial Estate, Horcott Road, Fairford, GL7 4BX, United Kingdom

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Conditions g�n�rales de vente

Returns Policy
We ask all customers to contact us for authorisation should they wish to return their order. Orders returned without authorisation may not be credited.
If you wish to return, please contact us within 14 days of receiving your order to obtain authorisation.
Returns requested beyond this time will not be authorised.
Our team will provide full instructions on how to return your order and once received our returns department will process your refund.
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Conditions d'exp�dition

Orders are shipped from our UK warehouse. Delivery thereafter is between 4 and 14 business days. Please contact us if you have any queries about our services or products.

Frais d?exp�dition de Royaume-Uni�vers�France

Frais d?exp�dition de Royaume-Uni�vers�France
Quantit� command�e	7 � 17 jours ouvr�s	7 � 17 jours ouvr�s
Premier article	EUR 4.90	EUR 4.90

Les d�lais de livraison sont fix�s par les vendeurs et varient en fonction du transporteur et du lieu. Les commandes transitant par les douanes peuvent �tre retard�es et les acheteurs sont responsables de tous les droits ou frais associ�s. Les vendeurs peuvent vous contacter au sujet de frais suppl�mentaires afin de couvrir toute augmentation des co�ts d'exp�dition de vos articles.