Comparison To Natural Tanning
Most tanning beds have about the same amount of UVA as sunlight (as opposed to UVB), while the 'warning signs' of overexposure, such as sunburn, do not appear at the same rate indoors as out. Furthermore, the radiation levels are more intense, requiring individuals to limit their exposure to very brief periods. The carcinogenic mutations in some skin cancers have been linked to UVA radiation more than UVB, suggesting that beds have different risks than natural light. The UVA light is also more strongly associated with skin aging than UVB, and with genetic damage.
Natural sunlight exposure has made studies of artificial tanning difficult, since all people are exposed to the natural sun. There are indisputable values to moderate sunlight exposure. UVB light induces the body to synthesize Vitamin D. Vitamin D is required for calcium absorption, and improves development and reduces cancer risk. The amount of sunlight required per day is estimated to be approximately the same that a single tanning session provides (10 minutes of strong sunlight every day for many people)., however 10 minutes of sunlight produces far fewer of the negative side effects caused by the tanning bed's UVA intensity.
Read more about this topic: Tanning Bed
Famous quotes containing the words comparison to, comparison and/or natural:
“In comparison to the French Revolution, the American Revolution has come to seem a parochial and rather dull event. This, despite the fact that the American Revolution was successfulrealizing the purposes of the revolutionaries and establishing a durable political regimewhile the French Revolution was a resounding failure, devouring its own children and leading to an imperial despotism, followed by an eventual restoration of the monarchy.”
—Irving Kristol (b. 1920)
“From top to bottom of the ladder, greed is aroused without knowing where to find ultimate foothold. Nothing can calm it, since its goal is far beyond all it can attain. Reality seems valueless by comparison with the dreams of fevered imaginations; reality is therefore abandoned.”
—Emile Durkheim (18581917)
“I am against nature. I dont dig nature at all. I think nature is very unnatural. I think the truly natural things are dreams, which nature cant touch with decay.”
—Bob Dylan [Robert Allen Zimmerman] (b. 1941)