Recent News and Articles on the Keywords: blackhead + blackheads + 0.17 Related to the article below (Last Update: 8/5/2008)
Getting a glow for the wedding day GoErie.com, PA - Aug 3, 2008 Brighten up a dull complexion with monthly visits to a spa for facials, which improve circulation, rid the skin of debris and clear blackheads. ...
Skin's Disappearing Acts KREN CW 27 TV, NV - Jul 25, 2008 Grade 1 Blackheads and open comedones. "A comedone is like a blackhead with a hardened ball that looks like a yucky pearl which is comprised of bacteria and ...
Tallinn to sue the government Baltic Business News, Europe - Jul 23, 2008 As the suggestion was denied, the 16th century architectural monument, the House of the Blackheads? will have to be returned to the Brotherhood of ...
Pop culture Melbourne Herald Sun, Australia - Aug 2, 2008 Zits, pimples, acne, blackheads, whiteheads, blemishes: there are not many of us mere mortals or even supermodels who have not suffered from the dreaded ...
It's private Sydney Morning Herald, Australia - Jul 9, 2008 Are you embarrassed about the brutally labelled products in your bathroom cupboard (''for deepset wrinkles'' or ''for pimples and blackheads'' or ''stubborn ...
What is your lifestyle doing to your face? Mirror.co.uk, UK - Jul 31, 2008 Skincare routine: I tend to get spots and blackheads, so I'm wary of moisturising too much because I think it makes it worse. My skin is dull and dry so I ...
Spires, Towers and Steeples ? A View of Old Town Riga The Baltic Course, Latvia - Jul 11, 2008 ... on to Kungu iela in the left mid ground and in vertical tandem with the elaboratelysculptured Gothic-style House of Blackheads in the right foreground. ...
Black Holes are Racist? Reinventing the Color Wheel Blogcritics.org, OH - Jul 10, 2008 ... brownouts, blacking out (and seeing white spots), Monty Python's The Black Knight, Ajax? White Knight, whiteheads, blackheads, redheads, and rednecks? ...
[PDF]Induction of fertile cycles in the Blackhead sheep during the anoestrus period - F SCHNEIDER, F REHBOCK - Arch. Tierz., Dummerstorf, 2003 - fbn-dummerstorf.de ... It was, therefore, the aim of this study in a flock of Blackhead ewes extensively ...
Our experiments in a flock of Blackheads were started after weaning in May of ... -
Blackhead removing sheet and method for producing blackhead removing sheet - M Hoshi, H Okabe - US Patent 6,562,357, 2003 - freepatentsonline.com ... to form a blackhead removing layer that was 0.17 mm thick ... the time needed to dry
the blackhead removing sheet, and to remove blackheads more efficiently. ...
P Baranowski - Acta Scientiarum Polonorum-Zootechnika, 2004 - cababstractsplus.org ... Ca: P ratio was observed in the osseous tissues of the Romney Marsh lambs
(0.50?0.10), whereas the highest was found in the Blackhead lambs (1.17?0.17). ...
[PDF]Blackhead Disease: What HAVE WE LEARNED LATELY? LR McDougald - avian.uga.edu ...Blackhead Disease.. . . . ...Blackhead outbreaks in chickens, in contrast to what we
see in turkeys, causes considerable morbidity, but low mortali- ty. ...
Should the stagnant homeownership rate be a source of concern? - RK Green - Regional Science and Urban Economics, 1996 - Elsevier ... income (0.004) (0.004) (0.004) (0.003) (0.003) (0.003) PIT to -0.20 -0.17 0.62 0.34
income (0.34) (0.07) (0.43) (0.13) House price 0.00 0.019 -0.03 0.033 ...
To put it quite simply and non-mechanical, blackheads are little bumps embedded into the pores of our skin. They are usually yellowish or blackish in color. Blackheads are a type of acne called an open comedone. According to medical practitioners, blackheads are the first stage of acne, forming before bacteria invade the pores of our skin, which in turn, results in infection and inflammation, (otherwise known as the pimple). These lesions typically develop after puberty. It is at this time that hormones begin surging into the body and skin. The excess hormones in the skin result in stimulation of the oil gland. These glands are called sebaceous glands. This stimulation leads to excess oil production in the pores. The excess oil gets occluded in the pores resulting in a ball of accumulated oil which when exposed to air, turns black in color. There are many conditions that may cause or even worsen blackheads. Some of these causes are the use of topical oils and the use of makeup. While blackheads are present in most any skin type, they are most likely to develop on people with very oily skin.
Article continues below and (thank you)
Common Blackhead Causes
As previously stated, blackheads usually develop when the skin produces too much oil. A major factor contributing to excess oil production is the onset of puberty. At this time, hormones become unregulated due to a by product called dihydrotestosterone or DHT. This hormone results in the over activity of the oil gland which then results in clogged pores.
Another common cause of the appearance of blackheads is that the skin is has not been cleaned thoroughly. When skin is not cleaned properly, dead skin cells accumulate within the pores. These dead cells then clog the pore opening which then results in oil build up, which we already know causes blackheads to form. Yet another cause of clogged pores is the use of too much makeup. Excessive use of moisturizes, foundations or sun screens can also have the same effect as the overuse of makeup.
A good rule of thumb to always follow is that whatever is it you put on your face throughout the day, be sure to take it off before going to sleep that night. Although thorough cleansing is essential, over-scrubbing or cleansing has been found to be one of the reasons for skin's anomalies and irritation. Although excessive oil is not beneficial, our skin needs a small amount to stay healthy. Too much scrubbing or irritation of the skin will result in reflex over activity of the oil gland. This will result in increased oil production and clogging of the pores, which, in turn, aggravates acne.
Blackheads Grow
Regular cleansing is recommended to everyone, whether blackheads are present or not. Initial symptoms of blackheads are not visible to the naked eye. As we spoke about earlier, if your skin is left unclean, more dirt is attracted to the skin. What starts out as yellow blackheads then turns into black, hard bumps which are difficult to extract. For this reason is always suggested to keep skin cleaned thoroughly.
Removing Blackheads
You can extract blackheads yourself if there is no sign of infection on or surrounding the blemish. If attempting to extract the blackhead yourself, always be sure to use sterile materials. It is also advised to be certain your environment is extremely clean. As suggested by skin experts, the first step would be to steam your skin for several minutes. The best way to do this is to place your face over a bowl of very hot water. It is also recommended to hold a towel over your head to keep in the steam. This will loosen the pores and make the extraction process less painful. Be careful not to scold yourself.
It is preferable to use a flat blackhead remover, or a comedone extractor to remove blackheads. You can find this product at any beauty store. It is highly recommended not to attempt to extract aggravated, inflamed or infected acne lesions since this will worsen the acne and can cause scarring.
If you are unsure of your ability to extract blackheads, it is recommended to visit a professional. Aestheticians and dermatologists can offer deep cleansing facial treatments designed to keep skin clear of black or white heads. The cost of these treatments may be a little high for your budget, but most are happy with the results and feel it is worth it in the long run.
Owned and operated by board certified Dermatologist Dr. Alex Khadavi, M.D., Clearogen offers diagnosis, research and an acne product for people suffering from acne which attacks the root causes of the issue.
Pollutants, food ingredients, solvents may all cause harm, researchers say.
By Alan Mozes HealthDay Reporter
MONDAY, May 14 (HealthDay News) -- A detailed analysis of hundreds of completed breast cancer studies has linked disease development with environmental exposure to more than 200 chemical compounds.
The finding is part of an effort to build a free, online breast cancer database for researchers and the public.
Described as "the most comprehensive of its kind," the database will highlight growing concern about environmental carcinogens such as pollutants, food contaminants, and organic solvents. The scope of the project will also extend to work that explores risk-related lifestyle factors such as diet, levels of physical activity, smoking/drinking habits and body mass.
"This compilation is a great effort, because it summarizes all the evidence and gives us hints of what to look for next," explained researcher Leslie Bernstein, a professor of preventive medicine with the Keck School of Medicine at the University of Southern California in Los Angeles.
The results are outlined in a supplement to the May 14th online issue of Cancer. The database is already accessible at either www.silentspring.org/sciencereview or www.komen.org/environment.
According to the American Cancer Society (ACS), carcinogens are defined as agents that instigate abnormal cell division or harmful changes in the structure of a cell's DNA. They include chemicals, radiation, or infectious agents, among other things.
The ACS also notes that with the exception of skin cancer, breast cancer is the most common cancer among American women. This year, almost 179,000 women in the United States will be diagnosed with the disease, and about 40,000 will die.
The International Agency of Research on Cancer has already classified 90 or so compounds as human carcinogens, according to the ACS. But Bernstein's team said that most of the chemicals to which people are routinely exposed have not undergone any testing for carcinogenic risk. An estimated 80,000 chemicals are registered in the United States for commercial use, according to the researchers.
For more than two years, Bernstein worked alongside colleagues from Harvard University, the Roswell Park Cancer Institute, and the Silent Spring Institute to amass and sort through approximately 900 national and international breast cancer studies focused on carcinogens.
The team honed in on 460 human breast cancer studies, of which more than 150 looked at specific environmental carcinogens among breast cancer patients. Most of those studies were conducted in the 1990s.
The remaining studies involved animal or laboratory research. The researchers pointed out that animal studies are valid references, because all known human carcinogens have also triggered tumors in animal subjects.
In the animal studies alone, evidence surfaced that linked 216 chemicals to the onset of breast tumors. These included 36 industrial chemicals, 6 chlorinated solvents, 18 products of combustion, 10 pesticides, 18 dyes, four type of radiation, 47 pharmaceuticals, and 17 hormones.
Of these compounds, the researchers isolated 73 that can be found in either human food or consumer products.
They noted, for example, the lingering hazards associated with polychlorinated biphenyls (or PCBs), which were typically used in the production of electrical equipment until federally banned in 1979. PCBs continue to pose a risk via contaminated rivers, fish, and pre-existing building construction, the researchers warned.
In addition, the authors categorized 35 compounds as carcinogenic air pollutants, including polycyclic aromatic hydrocarbons (or PAHs), which are byproducts of combustion.
The team also drew attention to another group of 25 organic compounds, including dioxins, which are produced by waste incineration and manufacturing. These carcinogenic chemicals are present in many American workplaces and place more than 5,000 women at an increased risk for breast cancer, the researchers said. These include women working in machine shops, dry cleaners, hairdressers, glass manufacturers, and aircraft maintenance facilities, all of which use harmful organic solvents.
Furthermore, among the identified carcinogens, 29 are produced in large amounts -- upwards of one million pounds or more per year.
The database project did not set strict guidelines as to how to limit exposure to carcinogens. But the authors said they encouraged research and government oversight into the problem. They advised that people do try and limit their exposure to PCB-contaminated fish, gasoline-generated air pollution, chlorinated tap water, non-stick coated cookware, and detergents containing fluorescent whiteners.
Just how carcinogenic, in terms of breast cancer risk, are these and other compounds on the list? The jury is still out on that question, Bernstein said.
"Women are terribly concerned about environmental causes of breast cancer," she said. "But it's really very difficult to study. Often the only way we've been able to look at some of these things is during occupational exposures or accidents -- what we usually call disasters."
"So, this work is a very useful tool for those of us who want to try to understand what we've missed in breast cancer. Now, it's up to us to do something with all this information," Bernstein said.
Janet Gray, a professor of psychology and the director of the program in science, technology and society at Vassar College in Poughkeepsie, N.Y., called the new database "an enormous contribution."
"Its greatest value is just the sheer comprehensive nature of the work, which allows both the public and researchers to have access to huge amounts of information in one place," she said. "I think this effort will really move us forward."
Known and Probable Carcinogens
Including Industrial Processes, Occupational Exposures, Infectious Agents, Chemicals, and Radiation)
What Is a Carcinogen?
Cancer is caused by abnormalities in a cell’s DNA (its genetic "blueprint"). These may be inherited from parents, or they may be caused by outside exposures to the body such as chemicals, radiation, or even infectious agents.
Substances that can cause changes that can lead to cancer are called carcinogens. Some carcinogens do not act on DNA directly, but lead to cancer in other ways, such as causing cells to divide at a faster rate, which could increase the chances that DNA changes will occur.
Carcinogens do not cause cancer in every case, all the time. Substances classified as carcinogens may have different levels of cancer-causing potential. Some may cause cancer only after prolonged, high levels of exposure. And for any particular person, the risk of developing cancer depends on many factors, including the length and intensity of exposure to the carcinogen and the person’s genetic makeup.
How Do We Determine if Something Is a Carcinogen? Scientists get much of their data about whether something might cause cancer from laboratory (cell culture and animal) studies. Although it isn’t possible to predict with certainty which substances will cause cancer in humans based on animal studies alone, virtually all known human carcinogens that have been adequately tested produce cancer in lab animals. In many cases, carcinogens are first found to cause cancer in lab animals and are later found to cause cancer in people. Because there are far too many substances (natural and manmade) to test each one in lab animals, scientists use knowledge about chemical structure, other types of lab tests, and information about the extent of human exposure to select chemicals for testing.
Most studies of potential carcinogens expose the lab animals to doses that are higher than common human exposures. This is so that cancer risk can be detected in relatively small groups of animals. For most carcinogens, it is assumed that those that cause cancer at larger doses in animals will also cause cancer in people. Although it isn’t always possible to know the relationship between exposure dose and risk, it is reasonable for public health purposes to assume that lowering human exposure will reduce risk.
Another important way to identify carcinogens is through epidemiologic studies, which look at human populations to determine which factors might be linked to cancer. While these studies also provide useful information, they also have their limitations. Humans do not live in a controlled environment. People are exposed to numerous substances at any one time, including those they encounter at work, school, or home; in the food they eat; and the air they breathe. And it is usually many years (often decades) between exposure to a carcinogen and the development of cancer. Therefore, it can be very hard to single out any particular exposure as having a definite link to cancer.
By combining data from both types of studies, scientists are able to make an educated assessment of a substance’s cancer-causing ability. When the available evidence is compelling but not felt to be conclusive, the substance may be considered to be a probable carcinogen.
How Are Carcinogens Classified?
International Agency for Research on Cancer (IARC)
The most widely used system for classifying carcinogens comes from the IARC, which is part if the World Health Organization (WHO). In the past 30 years, the IARC has evaluated the cancer-causing potential of about 900 likely candidates, placing them into one of the following groups:
Group 1: Carcinogenic to humans
Group 2A: Probably carcinogenic to humans
Group 2B: Possibly carcinogenic to humans
Group 3: Unclassifiable as to carcinogenicity in humans
Group 4: Probably not carcinogenic to humans
Perhaps not surprisingly, most of the agents are of probable, possible, or unknown risk. Only about 90 are classified as "carcinogenic to humans."
National Toxicology Program (NTP)
In the United States, the NTP releases the Report on Carcinogens about every 2 years. The NTP is formed from parts of several different government agencies, including the National Institutes of Health (NIH), the Centers for Disease Control and Prevention (CDC), and the Food and Drug Administration (FDA).
The Report on Carcinogens (RoC) identifies 2 groups of agents:
"Known to be human carcinogens"
"Reasonably anticipated to be human carcinogens"
Unlike the IARC’s list, the RoC does not list substances that have been studied and found not to be carcinogens. Below are the lists of known and probable human carcinogens from both groups.
Known Human Carcinogens
International Agency for Research on Cancer (IARC) "Carcinogenic to Humans" (Group 1)
Agents and Groups of Agents
Aflatoxins (naturally occurring mixtures of)
4-Aminobiphenyl
Arsenic and arsenic compounds (Note: This evaluation applies to the group of compounds as a whole and not necessarily to all individual compounds within the group)
Estrogens, nonsteroidal (Note: This evaluation applies to the group of compounds as a whole and not necessarily to all individual compounds within the group)
Estrogens, steroidal (Note: This evaluation applies to the group of compounds as a whole and not necessarily to all individual compounds within the group)
Ethylene oxide
Etoposide in combination with cisplatin and bleomycin
Formaldehyde
Gallium arsenide
Gamma radiation
Helicobacter pylori (infection with)
Hepatitis B virus (chronic infection with)
Hepatitis C virus (chronic infection with)
Herbal remedies containing plant species of the genus Aristolochia
Human immunodeficiency virus type 1 (infection with)
Human papillomavirus type 16
Human papillomavirus type 18
Human T-cell lymphotropic virus type I
Melphalan
8-Methoxypsoralen (Methoxsalen) plus ultraviolet A radiation
MOPP and other combined chemotherapy including alkylating agents
Mustard gas (Sulfur mustard)
2-Naphthylamine
Neutrons
Nickel compounds
Opisthorchis viverrini (infection with)
Oral contraceptives, combined (Note: There is also conclusive evidence that these agents have a protective effect against cancers of the ovary and endometrium)
Oral contraceptives, sequential
Phosphorus-32, as phosphate
Plutonium-239 and its decay products (may contain plutonium-240 and other isotopes), as aerosols
Radioiodines, short-lived isotopes, including iodine-131, from atomic reactor accidents and nuclear weapons detonation (exposure during childhood)
Radionuclides, alpha-particle-emitting, internally deposited (Note: Specific radionuclides for which there is sufficient evidence for carcinogenicity to humans are also listed individually as Group 1 agents)
Radionuclides, beta-particle-emitting, internally deposited (Note: Specific radionuclides for which there is sufficient evidence for carcinogenicity to humans are also listed individually as Group 1 agents)
Radium-224 and its decay products
Radium-226 and its decay products
Radium-228 and its decay products
Radon-222 and its decay products
Schistosoma haematobium (infection with)
Silica, crystalline (inhaled in the form of quartz or cristobalite from occupational sources)
Solar radiation
Talc containing asbestiform fibers
Tamoxifen (Note: There is also conclusive evidence that this agent (tamoxifen) reduces the risk of contralateral breast cancer)
2,3,7,8-Tetrachlorodibenzo-para-dioxin
Thiotepa
Thorium-232 and its decay products, administered intravenously as a colloidal dispersion of thorium-232 dioxide
Treosulfan
Vinyl chloride
X- and Gamma radiation
Mixtures
Alcoholic beverages
Analgesic mixtures containing phenacetin
Areca nut
Betel quid with tobacco
Betel quid without tobacco
Coal-tar pitches
Coal-tars
Mineral oils, untreated and mildly treated
Salted fish (Chinese-style)
Shale-oils
Soots
Tobacco products, oral tobacco products
Wood dust
Exposure Circumstances
Aluminum production
Arsenic in drinking water
Auramine, manufacture of
Boot and shoe manufacture and repair
Coal gasification
Coke production
Furniture and cabinet making
Hematite mining (underground) with exposure to radon
