Not long ago, what is now considered a healthy skin tone was considered a mark of a low social status. What was called a farmer tan, was the result of long days working in the fields on a regular basis, and farming did not fit well with high society. Fashion has a way of making dramatic swings, and now a well developed sunblock tan is essential to looking beautiful.
The sun is, of source of vital importance to life on planet earth, even beyond getting a sunblock tan. It provides critical energy and nutrition to all of the creatures alive today. Vegetation is nurtured by the energy in solar rays, creating nutrients through photosynthesis. While most enjoy the sun in the effort to perfect their sunblock tan, there are other reasons to seek solace in the sun.
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 is, of source of vital importance to life on planet earth, even beyond getting a sunblock tan. It provides critical energy and nutrition to all of the creatures alive today. Vegetation is nurtured by the energy in solar rays, creating nutrients through photosynthesis. While most enjoy the sun in the effort to perfect their sunblock tan, there are other reasons to seek solace in the sun.
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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