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.
Deep within the brain there is an endocrine gland known as the pineal gland, whose purpose is not entirely clear. What science knows is that the gland produces a derivative of serotonin known as melatonin, which helps regulate human sleep and wake cycles. Melatonin also plays a role in the ability to attain a sunblock tan, by controlling the aggregation of melanocytes in the skin.
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.
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.
Exposure to solar radiation appears to stave off MS, and it also helps the body produce vitamin D from cholesterol. As with so many other things, however, too much can be detrimental even for the purpose of getting a sunblock tan. Staying in the sun too long results in a sunburn, which can be a serious and painful affliction; with chronic exposure, skin cancer can develop.
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.
Deep within the brain there is an endocrine gland known as the pineal gland, whose purpose is not entirely clear. What science knows is that the gland produces a derivative of serotonin known as melatonin, which helps regulate human sleep and wake cycles. Melatonin also plays a role in the ability to attain a sunblock tan, by controlling the aggregation of melanocytes in the skin.
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.
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.
Exposure to solar radiation appears to stave off MS, and it also helps the body produce vitamin D from cholesterol. As with so many other things, however, too much can be detrimental even for the purpose of getting a sunblock tan. Staying in the sun too long results in a sunburn, which can be a serious and painful affliction; with chronic exposure, skin cancer can develop.
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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