Throughout history, mankind has revered youth, vigor and beauty, and it is still so to this day. The search for the holy grail, means to extend vigor and the pursuit of a sunblock tan are all manifestations on the focus on health. A pithy advertisement states if a good body came in a bottle, everyone would have one, the same is true of a sunblock tan.
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.
In ancient times, the sun was so important that it was worshiped, with the Egyptians naming the Deity Ra. Culture has long included facets documenting the understanding of the central position solar energy plays in allowing life on earth, even beyond the appeal of a sunblock tan. Science has developed a number of theories about the relationship between the solar cycle and human health.
Within the brain there is a gland known as the pineal. Medical science has debated its purpose and function for centuries. That it could play a role in getting a sunblock tan was never imagined, such is the complexity of human physiology. The pineal controls the release of melatonin, which, through its impact on melanin, allows the skin to develop a sunblock tan.
Exposure to the sun helps develop a sunblock tan through activation of melanocytes in the skin, the aggregation of which is controlled by melatonin. This same hormone also affects how drowsy people become; an increase in the hormone increases the drowsiness. There is a control mechanism; when sunlight reaches the retina of the eye, it inhibits the release of the hormone, which is why we are drowsier on overcast days.
The affect of the sun goes even deeper, beyond the desire for a sunblock tan, to implications that there its actions can directly promote good health, and a lack of exposure can initiate disease. Specifically, science has discovered a strong correlation between higher latitudes and the incidence of mortality due to multiple sclerosis. The higher the latitude, the less intense the suns rays.
There are also detrimental effects of too much exposure, commonly sunburn, but more seriously skin cancer. Directly attributable to overdosing on the solar rays, it is the condition those seeking a perfect sunblock tan must be careful to avoid. Limiting the time one remains in direct sunlight is the best answer, and even in tanning booths there is a concern.
For humans, too much of almost anything is a bad thing, a concern when perfecting a sunblock tan. The skin hue is not the concern, but the exposure to UV radiation is problematic. The products allowing us to safely develop a sunblock tan have improved greatly, but caution is critical.
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.
In ancient times, the sun was so important that it was worshiped, with the Egyptians naming the Deity Ra. Culture has long included facets documenting the understanding of the central position solar energy plays in allowing life on earth, even beyond the appeal of a sunblock tan. Science has developed a number of theories about the relationship between the solar cycle and human health.
Within the brain there is a gland known as the pineal. Medical science has debated its purpose and function for centuries. That it could play a role in getting a sunblock tan was never imagined, such is the complexity of human physiology. The pineal controls the release of melatonin, which, through its impact on melanin, allows the skin to develop a sunblock tan.
Exposure to the sun helps develop a sunblock tan through activation of melanocytes in the skin, the aggregation of which is controlled by melatonin. This same hormone also affects how drowsy people become; an increase in the hormone increases the drowsiness. There is a control mechanism; when sunlight reaches the retina of the eye, it inhibits the release of the hormone, which is why we are drowsier on overcast days.
The affect of the sun goes even deeper, beyond the desire for a sunblock tan, to implications that there its actions can directly promote good health, and a lack of exposure can initiate disease. Specifically, science has discovered a strong correlation between higher latitudes and the incidence of mortality due to multiple sclerosis. The higher the latitude, the less intense the suns rays.
There are also detrimental effects of too much exposure, commonly sunburn, but more seriously skin cancer. Directly attributable to overdosing on the solar rays, it is the condition those seeking a perfect sunblock tan must be careful to avoid. Limiting the time one remains in direct sunlight is the best answer, and even in tanning booths there is a concern.
For humans, too much of almost anything is a bad thing, a concern when perfecting a sunblock tan. The skin hue is not the concern, but the exposure to UV radiation is problematic. The products allowing us to safely develop a sunblock tan have improved greatly, but caution is critical.
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