Kronobiologi

Oppdag hvilken rolle lys spiller på kroppen

Vi har sett at kronobiologi studerer døgnrytmer og at vekslingen mellom dag/natt er en av de viktigste synkronisatorene til vår biologiske klokke. Når natten faller på, markerer lysfallet starten på søvnfasen og kroppen (gjennom den superchiasmatiske kjernen) begynner å skille ut melatonin, og inviterer oss til å sove. På den annen side, når dagen bryter på, markerer økningen i lys starten på den våkne fasen. Kroppen stopper utskillelsen av melatonin og aktiverer utskillelsen av de våkne hormonene (kortisol, serotonin).

I tillegg til dens regulerende effekt på våre biologiske rytmer, er det nå bevist at lys like mye har en fysiologisk effekt på kroppen . En fersk studie har faktisk bevist at lys, hvis det leveres i tilstrekkelig intensitet og kvalitet, forbedrer humøret og øker kognitive prestasjoner som hukommelse, årvåkenhet, reaktivitet, intellektuelle evner, etc.

The Science of Light

Understanding the science behind light is essential for grasping its influence on our physiology. Light is a form of electromagnetic radiation that travels in waves, each with a different wavelength and energy level.

What is Light?

At its core, light consists of photons, which are particles of energy. These photons travel in waves and can vary in length. The human eye detects only a small portion of the entire electromagnetic spectrum—what we know as visible light, which ranges from approximately 380 to 700 nanometers in wavelength. This visible light is responsible for the colors we see and is crucial in regulating various biological processes.

Different Types of Light

Light can be categorized into several types based on wavelength, each affecting the body differently. Natural sunlight is the most balanced source of light, containing a mixture of ultraviolet (UV), visible, and infrared light. Each type of light plays a unique role; for instance, UV light is vital for vitamin D synthesis, while blue light, a component of visible light, is essential for regulating circadian rhythms. Nonetheless, each type can pose risks if there's overexposure, making it critical to balance our light exposure.

The Electromagnetic Spectrum

The electromagnetic spectrum encompasses all types of electromagnetic radiation, from gamma rays with the shortest wavelengths to radio waves with the longest. In terms of health, we are primarily concerned with visible light, UV light, and infrared radiation. Each segment of the spectrum interacts with the body differently, influencing a range of physiological and psychological processes. For instance, while UV light aids in vitamin D production, overexposure can lead to skin damage.

Ultraviolet Light (100–400 nm): Short-wavelength light, invisible to the human eye, that can damage skin and eyes with overexposure.
Visible Light (400–700 nm): The light we see, comprising all colors from violet to red.
Infrared Light (700–1,000 nm): A type of longer-wavelength light, felt as heat, used in therapies to promote relaxation and healing.

Discover what role light plays on the body

with Roland Pec - sleep specialist and chrono-therapist

Luminette reproduserer de gunstige effektene av solen og stimulerer spesifikke reseptorer, plassert i øynene, som aktiverer den energigivende responsen som lyset har på kroppen. Det vil hjelpe deg å kjempe mot nedgang i energien, slik at du føler deg mer i form og det vil ha en regulerende effekt på søvnmønsteret ditt.

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