For men and women alike, health and beauty are coveted, with a healthy sunblock tan ranking high as a desirable trait. There is a sound scientific basis for the popularity of the sunblock tan; not only is it visually appealing, it is a marker of good health. As with so many things dealing with the human condition, moderation is the key.
The sun has powered life on earth since its beginning, feeding the vegetation through photosynthesis, which in turn feeds all other living creatures. Even the fossil fuel so critical to modern life is the result of long dead vegetation transformed by time and pressure. Anything that blocks the sun rays can be damaging, and one would have to turn to a tanning booth for a sunblock tan.
The sun has long been important to mankind, not just for a sunblock tan, as expressed in culture. The popular cartoon character superman draws strength from the yellow sun, although he never attains a sunblock tan, but people do gain health benefits from exposure to sunlight. There are theories defining how exposure to the sun, or lack thereof, has a powerful influence on circadian rhythms and may also affect disease.
In the days of Descartes, around 1625, the pineal gland, situated deep within the brain, was considered a sort of gateway between the world and the human spirit. The precise function of this gland is as yet still not completely understood beyond its function on releasing melatonin. This hormone has a number of effects in regulating physiology, among them helping one attain that sought after sunblock tan.
Another common knowledge impact of sunlight is that it makes most people feel better, in addition to the attractive sunblock tan they can achieve. Biologically the reason is melatonin, produced by the pineal, which regulates drowsiness. The release is inhibited directly by the influence of sunlight on the retina of the eye; the presence of the sunlight inhibits the release.
Sunlight also seems to directly impact some diseases, and may prevent others, so pursuit of a sunblock tan has benefits and risks. Multiple sclerosis is a debilitating disease that affects the nervous system and is often fatal, and may be prevented by adequate solar exposure. Scientists have found a direct proportionality between higher latitudes and the incidence of the disease, the connection being reduce overall sun exposure in these regions.
There are also a number of negative effects from exposure to the sun, the most obvious being sunburn, the most dangerous cancer. For most human beings, more than fifteen minutes exposure to direct sunlight begins to damage the surface of the skin. Those seeking a sunblock tan must take care not to overexpose the skin.
The three types of sun ultraviolet rays, A, B and C do not all harm skin equally, and that knowledge has driven the development of protective lotions. There has been a lot of progress since the first sticky substance with an SPF value of 2 was produced. It is now possible to gain the value of direct sunlight without all the damage with to get that healthy sunblock tan glow.
The sun has powered life on earth since its beginning, feeding the vegetation through photosynthesis, which in turn feeds all other living creatures. Even the fossil fuel so critical to modern life is the result of long dead vegetation transformed by time and pressure. Anything that blocks the sun rays can be damaging, and one would have to turn to a tanning booth for a sunblock tan.
The sun has long been important to mankind, not just for a sunblock tan, as expressed in culture. The popular cartoon character superman draws strength from the yellow sun, although he never attains a sunblock tan, but people do gain health benefits from exposure to sunlight. There are theories defining how exposure to the sun, or lack thereof, has a powerful influence on circadian rhythms and may also affect disease.
In the days of Descartes, around 1625, the pineal gland, situated deep within the brain, was considered a sort of gateway between the world and the human spirit. The precise function of this gland is as yet still not completely understood beyond its function on releasing melatonin. This hormone has a number of effects in regulating physiology, among them helping one attain that sought after sunblock tan.
Another common knowledge impact of sunlight is that it makes most people feel better, in addition to the attractive sunblock tan they can achieve. Biologically the reason is melatonin, produced by the pineal, which regulates drowsiness. The release is inhibited directly by the influence of sunlight on the retina of the eye; the presence of the sunlight inhibits the release.
Sunlight also seems to directly impact some diseases, and may prevent others, so pursuit of a sunblock tan has benefits and risks. Multiple sclerosis is a debilitating disease that affects the nervous system and is often fatal, and may be prevented by adequate solar exposure. Scientists have found a direct proportionality between higher latitudes and the incidence of the disease, the connection being reduce overall sun exposure in these regions.
There are also a number of negative effects from exposure to the sun, the most obvious being sunburn, the most dangerous cancer. For most human beings, more than fifteen minutes exposure to direct sunlight begins to damage the surface of the skin. Those seeking a sunblock tan must take care not to overexpose the skin.
The three types of sun ultraviolet rays, A, B and C do not all harm skin equally, and that knowledge has driven the development of protective lotions. There has been a lot of progress since the first sticky substance with an SPF value of 2 was produced. It is now possible to gain the value of direct sunlight without all the damage with to get that healthy sunblock tan glow.
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