Deprecated: Methods with the same name as their class will not be constructors in a future version of PHP; Translation_Entry has a deprecated constructor in /home/jacqueslalanne/public_html/nature-sante.org/wp-includes/pomo/entry.php on line 14

Deprecated: Methods with the same name as their class will not be constructors in a future version of PHP; POMO_Reader has a deprecated constructor in /home/jacqueslalanne/public_html/nature-sante.org/wp-includes/pomo/streams.php on line 12

Deprecated: Methods with the same name as their class will not be constructors in a future version of PHP; POMO_FileReader has a deprecated constructor in /home/jacqueslalanne/public_html/nature-sante.org/wp-includes/pomo/streams.php on line 120

Deprecated: Methods with the same name as their class will not be constructors in a future version of PHP; POMO_StringReader has a deprecated constructor in /home/jacqueslalanne/public_html/nature-sante.org/wp-includes/pomo/streams.php on line 175

Deprecated: Methods with the same name as their class will not be constructors in a future version of PHP; POMO_CachedFileReader has a deprecated constructor in /home/jacqueslalanne/public_html/nature-sante.org/wp-includes/pomo/streams.php on line 221

Deprecated: Methods with the same name as their class will not be constructors in a future version of PHP; POMO_CachedIntFileReader has a deprecated constructor in /home/jacqueslalanne/public_html/nature-sante.org/wp-includes/pomo/streams.php on line 236

Deprecated: Methods with the same name as their class will not be constructors in a future version of PHP; WP_Widget_Factory has a deprecated constructor in /home/jacqueslalanne/public_html/nature-sante.org/wp-includes/widgets.php on line 544

Deprecated: Methods with the same name as their class will not be constructors in a future version of PHP; Hja_Widget has a deprecated constructor in /home/jacqueslalanne/public_html/nature-sante.org/wp-content/plugins/javascript-html-text-adder/includes/widgets/class-hja-widget.php on line 25

Deprecated: Methods with the same name as their class will not be constructors in a future version of PHP; WYSIJA_object has a deprecated constructor in /home/jacqueslalanne/public_html/nature-sante.org/wp-content/plugins/wysija-newsletters/core/base.php on line 16

Deprecated: Methods with the same name as their class will not be constructors in a future version of PHP; WYSIJA_help has a deprecated constructor in /home/jacqueslalanne/public_html/nature-sante.org/wp-content/plugins/wysija-newsletters/core/base.php on line 245

Deprecated: Methods with the same name as their class will not be constructors in a future version of PHP; WYSIJA has a deprecated constructor in /home/jacqueslalanne/public_html/nature-sante.org/wp-content/plugins/wysija-newsletters/core/base.php on line 420

Deprecated: Methods with the same name as their class will not be constructors in a future version of PHP; WYSIJA_model has a deprecated constructor in /home/jacqueslalanne/public_html/nature-sante.org/wp-content/plugins/wysija-newsletters/core/model.php on line 3

Deprecated: Methods with the same name as their class will not be constructors in a future version of PHP; WYSIJA_model_config has a deprecated constructor in /home/jacqueslalanne/public_html/nature-sante.org/wp-content/plugins/wysija-newsletters/models/config.php on line 3

Deprecated: Methods with the same name as their class will not be constructors in a future version of PHP; WYSIJA_help_forms has a deprecated constructor in /home/jacqueslalanne/public_html/nature-sante.org/wp-content/plugins/wysija-newsletters/helpers/forms.php on line 4

Deprecated: Methods with the same name as their class will not be constructors in a future version of PHP; WYSIJA_help_front has a deprecated constructor in /home/jacqueslalanne/public_html/nature-sante.org/wp-content/plugins/wysija-newsletters/helpers/front.php on line 6

Deprecated: Methods with the same name as their class will not be constructors in a future version of PHP; WYSIJA_control has a deprecated constructor in /home/jacqueslalanne/public_html/nature-sante.org/wp-content/plugins/wysija-newsletters/core/controller.php on line 5

Deprecated: Methods with the same name as their class will not be constructors in a future version of PHP; WYSIJA_view has a deprecated constructor in /home/jacqueslalanne/public_html/nature-sante.org/wp-content/plugins/wysija-newsletters/core/view.php on line 4

Deprecated: Methods with the same name as their class will not be constructors in a future version of PHP; WYSIJA_view_front has a deprecated constructor in /home/jacqueslalanne/public_html/nature-sante.org/wp-content/plugins/wysija-newsletters/views/front.php on line 3

Deprecated: Methods with the same name as their class will not be constructors in a future version of PHP; PasswordHash has a deprecated constructor in /home/jacqueslalanne/public_html/nature-sante.org/wp-includes/class-phpass.php on line 36

Deprecated: Methods with the same name as their class will not be constructors in a future version of PHP; WYSIJA_help_toolbox has a deprecated constructor in /home/jacqueslalanne/public_html/nature-sante.org/wp-content/plugins/wysija-newsletters/helpers/toolbox.php on line 3

Warning: Parameter 1 to wp_default_scripts() expected to be a reference, value given in /home/jacqueslalanne/public_html/nature-sante.org/wp-includes/plugin.php on line 571

Warning: Parameter 1 to wp_default_styles() expected to be a reference, value given in /home/jacqueslalanne/public_html/nature-sante.org/wp-includes/plugin.php on line 571

Deprecated: Methods with the same name as their class will not be constructors in a future version of PHP; WYSIJA_NL_Widget has a deprecated constructor in /home/jacqueslalanne/public_html/nature-sante.org/wp-content/plugins/wysija-newsletters/widgets/wysija_nl.php on line 6

Notice: register_sidebar est appelée de la mauvaise manière. Aucun id n’a été configuré dans le tableau d’arguments de la barre latérale "Main Sidebar". "sidebar-1" sera utilisé par défaut. Configurez manuellement id avec "sidebar-1" pour faire disparaître cette notification et conserver le contenu actuel de la barre latérale. Veuillez consulter la page Débugger dans WordPress (en) pour plus d’informations. (Ce message a été ajouté à la version 4.2.0.) in /home/jacqueslalanne/public_html/nature-sante.org/wp-includes/functions.php on line 3560
Lumière et santé en toute saison | Nature-Santé

Lumière et santé en toute saison

Variations lumineuses saisonnières

Dès que les journées raccourcissent à l’automne, plusieurs éprouvent une certaine baisse d’énergie. Au 21 décembre l’ensoleillement est à son plus bas. Le taux de sérotonine dans le corps l’est aussi.
En fin d’hiver, plusieurs personnes se sentent au ralenti, voient leur énergie et leur motivation baisser, ont besoin de plus de sommeil. Les pensées suicidaires sont plus fréquentes. Les femmes éprouvent plus souvent cette difficulté. La déprime saisonnière est plus fréquente dans les pays nordiques car les jours y sont plus courts.
On appelle cette réaction le trouble affectif saisonnier.
L’exposition à la lumière, un besoin
Été comme hiver, l’oeil et la peau ont besoin de lumière, pour activer le cerveau, régulariser le sommeil, la température du corps, l’attention et l’activité physique et intellectuelle.
Une demi-heure par jour et quelques heures par semaine d’exposition à l’air et au soleil restent un besoin essentiel du corps.
Si on passe toute la journée à la lumière artificielle dans une pièce sans fenêtre on doit s’éclairer avec une lampe qui fournit tout le spectre des rayons du soleil. On peut aussi s’exposer une heure par jour à une lampe spéciale dispensant une lumière intense.



Comparaison d’exposition à diverses lumières :
Situation
Intensité lumineuse en lux
Journée ensoleillée sur une plage
100 000
Au bureau bien éclairé
1000
À la maison
500
Lampe spéciale placée à 50 cm
10 000