The three claims I will be researching are the claim that sunglasses causes sunburn results, due to the fact that less melanin is produced. The claim that tanning beds cause birth defects during pregnancy. And, the claim that people should get their cholesterol checked in the summer.
Do sunglasses cause sunburn?
Skin color changes in response to sun exposure. The pituitary gland is the trigger that produces hormones that produce melanin. Dr. Maolem says that if you are wearing sunglasses, much less sunlight reaches the optic nerve, which in turn tricks the pituitary gland in thinking that there is less sunlight. Then less melanin is produced, causing more sunburn results.
Melanin is a substance that gives the skin and hair it’s natural color. Dark-skinned people have more melanin in their skin than light skinned people. Freckles are concentrated areas of melanin.
Ultraviolet light has the effect of burning skin. Melanin prevents ultraviolet light. Therefore melanin prevents the effect of burning skin. Melanin is the determinant of skin color. It is found in hair, eye, and ear. The melanin in the skin is produced by cells called melanocytes, found in the epidermis. It is produced in response to light. It actually does not come from any glands, although there is a pineal gland that produces melatonin, though it has no effect on humans.
There is a light responsive cells in the retina. Though they sense changes in light, they can also affect our mood. It would not affect if we were to be sunburned or not.
Ultraviolet light is radiation that is shorter than visible light. It is found in sunlight. Once ultraviolet rays penetrate skin, it starts working on the melanocytes. The rays work as a catalyst for increases productio...
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...ipoprotein) increases by 8%. Whereas during the summer, the HDL (high-density lipoprotein) increases around 9%. This proves that during the winter month, less healthy food is indeed consumed causing bad cholesterol.
The result of this survey could also be because many people do not work out as much in the winter compared to the summer. People need to check their cholesterol level in the summer to see if they had gained high-density or low-density cholesterol.
The product of the statement that sunglasses cause sunburn was true. They do indeed cause sunburn by tricking the eyes. Tanning beds do cause birth defects due to the use of harmful UVB lights that destroys folate that is critical during pregnancy. And cholesterol should indeed be checked during the summer due to the fact that people consume fatter foods and do not exercise as much during the winter months.
Anthropologists and geographers have studied and overtime come to the conclusion that distribution of skin color is not random. Darker skin color has been found to typically come from near the equator and lighter skin colors are typically coming from closer to the north and south poles. Over the years, researchers have found that darker skin colors has protected the skin from having skin cancer. Recent studies have shown that “skin color is the product of natural selection acting to regulate the effects of the sun’s ultraviolet radiation on key nutrients crucial to the reproductive success” (169).
The hair of the scalp is longer and more flexible, while the hair of the eyebrows tends to be short and stiff. Oval shaped hair shafts produce wavy hair, flat hair shafts create curly hair and hair shafts that are perfectly round create straight hair. There are also different types of melanin, a natural compound responsible for the production of color in the eyes, skin and hair. There is yellow, brown and black melanin, each produced by melanocytes located at the follicle base. With age, melanin production decreases, causing greying of hair. (Applegate & Saunders, 2001, pp
The skin is made up of layers called epidermis, dermis and hypodermis. The epidermis is the outermost layer and consists mainly of dead cells and a protein called keratin. The epidermis is avascular, meaning there are no blood vessels in this layer. It contains a few nerve receptors for touch and pain. The cells found in the epidermis are stem cells, which become the next cell described, keratinocytes. These cells manufacture the protein keratin and are the most abundant cells in the epidermis. Melanocytes are found in the epidermis and they create the pigment called
Tanning can be harsh to your skin. The light coming from the sun contains different wavelengths of ultra violet (UV) waves. The two types of waves concerned about are UVA rays and UVB rays. UVA rays are long waves that cause more damage than a UVB ray. UVA rays penetrate deeper into your skin and cause tanning (“The Dangers of”). More and more exposure to UVA rays can cause permanent damage ...
In today’s culture, being tan coincides with what is believed to be beautiful. As a result, it is no surprise that in the United States of America, an estimated 922,000 people are currently living with some level of melanoma. Even though the news media and doctors warn people about the risks of too much sun exposure and give information as to how to prevent contracting skin cancer, people are still disregarding this important information and going into the sun for extended periods of time unprotected.
Tanning affects the human skin through ultraviolet radiation, part of the spectrum of light that omits from the sun to the surface of the earth. Ultraviolet A rays are the longer ultraviolet rays that are projected, and these rays penetrate deep into the layers of skin, causing a tanning effect (Harvard Women's Health Watch, 2). It does this by penetrating into the lower layers of skin, or the epidermis, and triggering cells known as melanocytes to make melanin, the brown pigment that causes tanning (Hyde, Patrice, MD, 1). They account for most of the ultraviolet components emitted by lamps in tanning beds, because they are associated with an almost immediate tanning effect (Brady, Mary S, 2). The shorter rays are ultraviolet B rays, and these rays only reach the outer superficial skin cell layer, also known as the epidermis (Harvard Women's Health Watch, 2). UVB rays, therefore, are the actual cause of sunbur...
Sun shine contain ultraviolet ray which can cause the sunburn or even skin cancer. According to Cancer Council in Australia, Australia has highest incident rate of skin cancer in the world. More than 430000 Australians are diagnosed with skin cancer each year. There are approximately 60 percent of people who have got skin cancer will survive greater than five years after they diagnosis (Cancer Council Australia, 2014). In order to protect people under the sun, the sun protective behaviour is significant necessary.
amount of UV exposure absorbed by a person is a direct result of the intensity of the light absorbed, the length of time of the exposure, and whether or not the skin was protected by clothing or sunscreen. Skin damage can be prevented by limiting when and how long one is exposed to sunlight, and by wearing protective clothing and sunscreen. Avoid exposure to sunlight during mid-day hours, when it is most intense. Tight weave clothing, and hats, protect against the sun's rays. Tanning beds, while popular, are also ...
The major environmental risk factor for melanoma is overexposure to ultraviolet (UV) radiation from the sun. People who have fair skin that burns or freckles easily need to be especially careful in the sun as protecting yourself against UV overexposure is an important way you can help reduce your risk of developing melanoma.
Moll, J. (2008, October 06). Can The Mediterranean Diet Lower Cholesterol. Retrieved December 1, 2013, from About: http://cholesterol.about.com/od/cholesteroldiets/a/mediterranean.htm
Melanin helps reduce the absorption of wavelengths into the skin (Chaplin, Jablonski, 59). The more melanin in the skin, the greater the protection against harmful UV rays, and the amount of melanin in the skin correlates with the skin’s color (more melanin means darker skin)....
...cations. Many people will find that amount of sunlight they receive has little or no impact on the state of their psoriasis, but in the cases where the light therapy has worked, it seems to reduce the appearance of the lesions greatly. Obviously, the risk of the UV light therapy is the possible threat of skin cancer.
The tendency to build up high cholesterol may run in families, but extremely high levels are usually the result of a poor diet high in saturated fats and calories, along with little or no exercise. In some cases, high levels of cholesterol may be associated with undiagnosed medical symptoms such as diabetes or low thyroid function. According to the American Heart Association, there would eventually be a 50 percent lower rate of heart disease if Americans would lower their blood cholesterol levels by 25 percent. These statements find confirmation in a 1984 report done by the National Heart, Lung and Blood Institution on the results of a 10 year study. It showed that for every 1 percent of lowered cholesterol, the chances of a heart attack are lowered by 2 percent.
The body seems to be slower. Motivation to do anything takes a hit. In fact, in a survey taken in Maryland, over 90% of the people surveyed reported that they noticed a change in mood, behavior, and energy levels with the change of seasons.... ... middle of paper ...
Probably the most commonly used word by your dermatologist, your beautician, your pharmacist or just the girl next door, and for a good reason. The sun’s damaging UV rays can single-handedly destroy your skin over time and in some cases even cause irreparable damage. It will burn your skin, dry it out, destroy collagen fibers and predispose you to cancer. Whether it’s a scorching sun or not, whether you are outdoors or not, sunscreen is an everyday must-wear. You have a choice.