Almost all studies confirm an increase in heart rate (Carter 1988; Fisher and Tucker 1991; Michalak, Ising and Rebentisch 1990; Millar and Steels 1990; Schwarze and Thompson 1993; Thompson 1993). Most cold-related deaths occurred in people with cardiovascular diseases, and most heat-related deaths were associated with respiratory tract illnesses. It can cause abnormalities to the child and stop the growth. We will occasionally send you account related emails. Despite numerous studies, the role of chemical factors in causing cardiovascular diseases is still disputed, but probably is small. Carcinogens • Agents causing cancer (thro’ genetic damage) • Classification • Chemical • Physical • Hormonal • Biological • History: • 18th Century Sir Percival Pott • Scrotal skin cancer in … Selection of activities and industrial branches that may be associated with cardiovascular hazards, Rayon and synthetic fiber fabrication, rubber, matches, explosives and cellulose industries Used as solvent in manufacture of pharmaceuticals, cosmetics and insecticides, Explosives and munitions manufacture, pharmaceuticals industry, Employees in large industrial combustion facilities (blast furnaces, coke ovens) Manufacture and utilization of gas mixtures containing CO (producer gas facilities) Repair of gas pipelines Casting workers, firefighters, auto mechanics (in badly ventilated spaces) Exposures to accidents (gases from explosions, fires in tunnel building or underground work), Smelting of lead ore and secondary raw materials containing lead Metal industry (production of various alloys), cutting and welding metals containing lead or materials coated with coverings containing lead Battery factories Ceramics and porcelain industries (production of leaded glazes) Production of leaded glass Paint industry, application and removal of leaded paints, Solvents (paints, lacquer) Adhesives (shoe, rubber industries) Cleaning and degreasing agents Basic materials for chemical syntheses Refrigerants Medicine (narcotics) Methyl chloride exposure in activities using solvents. It may also cause problems with the eye and the cornea will be burnt which will lead to cataracts, which is most commonly seen on the elderly. The mortality from ischemic heart disease was higher for underground miners than for above-ground workers (relative risk = 1.6). One last thing is if you are exposed to a large amount of radiation. An … In the studies, of 1,228 and 1,194 people with acute myocardial infarction respectively, the physical strain one hour before the infarction was compared with the situation 25 hours before. Still unclear is the decisive question of whether long-term exposure to cold or heat results in lasting increased risk of cardiovascular disease, or whether exposure to heat or cold increases the risk for an acute manifestation of cardiovascular diseases (e.g., a heart attack, a stroke) in connection with the actual exposure (the “triggering effect”). The Raynaud’s phenomenon is pathogenetically based on a vasomotor disorder. In dynamic work that requires the smaller and middle muscle masses, the heart may put out more blood than is needed for the total physical work and the result can be considerably increased systolic and diastolic blood pressure (Frauendorf et al. The results of studies to date are also not consistent on the question of whether heavy physical work is related to the onset of arterial hypertension. The acute effects of high outside temperatures or cold on the circulatory system are well documented. This does not definitively clarify whether cardiotoxic effects are definitely excluded at doses under 10 ppm. In addition to the nerves, the heart is one of the organs that react especially critically to such hypoxaemia. A selection of relevant activities and industrial branches can be found in Table 1. Biological Carcinogens. All these are hazardous as they are all bad chemicals bad for the health of a human. The design of this study is not known. Studies from the United States (Rogot and Padgett 1976) and other countries (Wyndham and Fellingham 1978) show a similar U-shaped relationship, with the lowest heart attack and stroke mortality at outside temperatures around 25 to 27°C. 1988). If you fit this description, you can use our free essay samples to generate ideas, get inspired and figure out a title or outline for your paper. A physical inspection of the facilities may also be necessary. There is little, if any, epidemiological evidence to support the hypothesis that the risk of cardiovascular disease is higher in populations with an occupational, long-term exposure to high temperature (Dukes-Dobos 1981). Chemical. In facilities in research and industry with strong magnetic fields, some authors advise medical surveillance examinations for people with cardiovascular diseases, including high blood pressure, in jobs where the magnetic field exceeds 2 T (Bernhardt 1986; Bernhardt 1988). Wikström, Kjellberg and Landström (1994), in a comprehensive overview, cited eight epidemiological studies from 1976 to 1984 that examined the connection between whole-body vibrations and cardiovascular diseases and disorders. The danger threshold for ferromagnetic implants begins at 50 to 100 mT. Studies on the incidence of cardiovascular diseases in occupational groups exposed to ionizing radiation are not available. There are no known epidemiological studies of workers exposed to cold (e.g., cooler, slaughterhouse or fishery workers). The amount of static strain (gripping and pressing strength) appears to be a contributing factor. Visual (induced with magnetophosphene) and nervous effects are reported at 10 to 100 mA/m2. A successful 15-year intervention study (Nurminen and Hernberg 1985) documents the reversibility of the effect on the heart: a reduction in exposure was followed almost immediately by a decrease in cardiovascular mortality. 1988). These burns affect the skin very severely. Certain statistics have not been updated since the production of the 4th edition of the Encyclopaedia (1998). Aneurysmatic changes in the retinal vasculature were observed at carbon disulphide concentrations under 3 ppm (Fajen, Albright and Leffingwell 1981). Studies that enlist hearing loss as a surrogate for noise show varied results. Ortho-toluidine, used to make rubber chemicals, pesticides, and dyes, has been reevaluated and is now listed as a kno… Home — Essay Samples — Business — Safety — Biological, chemical and physical hazards. You would need to wear boots with a metal toe cap and a hard hat, different workers have different hard hats, even visitors get a different coloured hat, make sure their whole body is well insulated with the correct clothing, wear gloves at all times, goggles, and for those who are working high up in the sky, they would need to make sure they are wearing their safety harness. Short chain non-substituted hydrocarbons have a higher toxicity than ones with longer chains. The results of epidemiological studies do not permit any final answer on the adverse cardiovascular health effects of chronic workplace or environmental noise exposure. 1995). Types of mutagens Physical mutagen Chemical mutagen Biological mutagen 6. Pages 241-333. Cardiovascular diseases are at the centre of the discussion on possible chronic extra-aural effects of noise. No studies are presently available on the chronic effects of this increased circulatory activity in local muscle work, with or without noise or mental strain. A problem with drugs, e.g. AVAILABLE SOON! The relative significance of cold, noise and other physical and psychological stressors, and heavy nicotine consumption is still unclear in the development of the Raynaud’s phenomenon. The relationship found between physical work and the onset of cardiovascular diseases can be influenced by a number of confounding variables (like social status, education, behavioural risk factors). It may also cause mental problems and retardation. Carcinogen, any of a number of agents that can cause cancer in humans. “A biological hazardous material can be defined as a biological material capable of self-replication that can cause harmful effects in other organisms, especially humans” (American Industrial Hygiene Association 1986). Experimental studies have shown that with regular motion training, the known risk factors and other health-related factors are positively influenced. Types of Chemical Carcinogen Many, but not all, known chemical carcinogens fall into some fairly well-defined chemical classes, such as polycyclic aromatic hydrocarbons (PAHs), aromatic animes and nitro compounds, alkylating agents and N-nitroso amines and amides. A worker at the workplace may be affected by inhaling dangerous fumes, chemical on skin or eyes, swallowed food that contained a chemical and when you have been exposed to a needle on your skin that’s been accidently injected. Epidemiological studies have been done within the workplace noise field (with high-level noise indicators) as well as in the surrounding noise field (with low-level noise indicators). ADVERTISEMENTS: Soil Texture refers to the particle sizes composing the soil. This is based on evidence obtained from human and/or animal studies but which is not sufficient for a Category 1 classification Category 2 mutagens cause concern for human owing to the possibility that they may induce heritable mutations in the germ cells of humans. But attention should be paid to the fact that this factor very often is combined with exposure to noise, inactivity (sitting work) and shift work. Precautionary measures are thus required for persons with ferromagnetic implants (unipolar pacemakers, magnetizable aneurysm clips, haemoclips, artificial heart valve parts, other electrical implants, and also metal fragments). Comparable results were cited by Moulin et al. It results, for example, in an increase in the HDL-cholesterol level, and a decrease in the serum-triglyceride level and blood pressure (Bouchard, Shepard and Stephens 1994; Pate et al. Other materials like cadmium, cobalt, arsenic, antimony, beryllium, organic phosphates and solvents are under discussion, but not sufficiently documented as yet. Workplaces with exposure to cold should pay special attention to appropriate dress and avoiding drafts (Kristensen 1994). For a few materials such as carbon disulphide and organic nitrogen compounds, the effect on the cardiovascular system is generally recognized (Kristensen 1994). LABORATORY HAZARD: Chemical, Physical and Biological Hazard. The effects of long-term exposure with low CO concentrations are still subject to controversy. A mutagen is anything that will cause a mutation to occur. Increases in heart rate are apparent only under very heavy vibration loads; the influence on blood pressure values shows no systematic results and electrocardiographic (ECG) changes are not significantly differentiable. In addition to the clearly direct cardiotoxic effects, arteriosclerotic changes in the brain, eye, kidney and coronary vasculature that can be considered the basis of encephalopathies, aneurysms in the retina area, nephropathies and chronic ischaemic heart disease have been proven among those who are exposed to CS2. In the magnetic field, such as in the blood stream or during heart contraction, charged carriers lead to induction of electrical fields and currents. The so-called withdrawal syndrome appears when exposure is interrupted for employees with long-term exposure to organic nitrate, with a latency period of 36 to 72 hours. In certain epidemiological studies, suspected associations between exposure duration and intensity of organic nitrate and ischaemic heart disease are considered uncertain, and pathogenetic plausibility for them is lacking. Ionizing Radiation, Electromagnetic Fields, Radioand Microwaves, Ultra- and Infrasound. A wide variety of agents are categorized as carcinogens. Exposure to loud noise almost always results fairly quickly in changes such as in blood cortisone, cyclical adenosinmonophosphate (CAMP), cholesterol and certain lipoprotein fractions, glucose, protein fractions, hormones (e.g., ACTH, prolactin), adrenalin and noradrenalin. In 1954, Foulds ( 8 ) individualized a third stage that he termed ‘progression’, in order to account for all post-initiation events that occur during carcinogenesis. The risk is that injuries or bleeding can result from migration or pivotal motions, and that functional capacities (e.g., of heart valves, pacemakers and so on) can be affected. They can themselves be a cause or contributing factor in a developing disease. Xanax (Alprazolam), may cause significant memory loss, brain damage, lack of concentration. The possibility of cardiovascular effects from ultrasound (frequency range between 16 kHz and 1 GHz) and infrasound (frequency range >>20 kHz) are discussed in the literature, but the empirical evidence is very slight (Kristensen 1994). Primary and secondary selection processes (healthy worker effect) can lead to serious distortions in occupational medical epidemiological studies. In two recently published independent studies, by American and German researchers (Mittleman et al. The sensitizing potential of hydrocarbons apparently depends on the degree of halogenation and on the type of the halogen contained, whereas chlorine-substituted hydrocarbons are supposed to have a stronger sensitizing effect than fluoride compounds. Normally, serious health considerations are not to be expected with acute intoxication. In numerous new survey studies, noise researchers have assessed the available research results and summarized the current state of knowledge (Kristensen 1994; Schwarze and Thompson 1993; van Dijk 1990). In the 1980s and 1990s the possible effects of electrical and magnetic fields on human health have attracted increasing atten- tion from people in occupational and environmental medicine. Students who find writing to be a difficult task. Human Papilloma Virus (HPV, Figure \(\PageIndex{4}\)) is an example of a biological carcinogen. 1) is derived primarily from studies of animal models. It is assumed that endogenous factors (e.g., in the sense of a primary Raynaud’s phenomenon) as well as exogenous exposures can be held responsible for the occurrence of a vibration-related vasospastic syndrome (VVS). If you’d like this or any other sample, we’ll happily email it to you. A series of epidemiological studies, spurred on by the studies of Morris et al. Studies by Stout and Grawford (1991) and Woodhouse and co-workers (1993; 1994) show that fibrinogens, blood clotting factor VIIc and lipids were higher among older people in the winter. 5. 1987). These hazards can vary from a microorganisms, viruses or toxins. They can be divided into three major categories: chemical carcinogens (including those from biological sources), physical carcinogens, and oncogenic (cancer-causing) viruses. The quantification of the risk of hypertension by using higher noise exposure levels was possible in this study only because the offered hearing protection was not worn. Germ-infected wounds can induce a myo- or endo- carditis with, for example, streptococci and staphylococci. The figures were statistically significant for blood diseases, high blood pressure, ischemic heart disease and respiratory tract diseases. 0. According to Woodhouse, Khaw and Plummer (1993a), there is a strong inverse correlation between blood pressure and temperature. In the studies (Talbott et al. The indications are mounting that noise and the risk factors—increased blood pres- sure, increased serum cholesterol level (Pillsburg 1986), and smoking (Baron et al. * • Mutagenn* are Classified into, physical mutagens, chemical mutagens, and biological agents. The physical work is, in general, intensive, but has less of a workout effect on the cardiovascular system. Reducing the exposure to 10 ppm clearly reduced cardiovascular mortality. Ethnic and nutritionally related components interfere in the pathomechanism; this was made clear in the comparative studies of Finnish and Japanese viscous rayon workers. 1990); more frequent (68%) among chronic Q-fever
with weak immune system or pre-existing heart disease
(Brouqui et al. PRE-ORDER TODAY! 1994; Stout and Grawford 1991; Woodhouse, Khaw and Plummer 1993b; Woodhouse et al. Thus the electrical voltage that is created in a strong static magnetic field over the aorta near the heart during coronary activity can amount to 30 mV at a flow thickness of 2 Tesla (T), and induction values over 0.1 T were detected in the ECG. Chemical Carcinogens Biological Carcinogens Dr.CSBR.Prasad, M.D., 10. While many mutagens are carcinogens as well, many others are not. Provide 5 specific examples of chemical or physical mutagens or carcinogens, along with the type of mutation they cause. Certain immediate effects of low-frequency magnetic fields on the organism that have been scientifically documented through in vitro and in vivo examinations of low to high field strengths should be mentioned in this connection (UNEP/WHO/IRPA 1984; UNEP/WHO/IRPA 1987). A chemical hazard is a hazard that can be caused through chemicals in the air and on surfaces at the workplace. An increase in the noise level from 70 to 100 dBA raised the risk for high blood pressure by a factor of 2.5. However, the hypothesis that halogenated hydrocarbon acts as a myocardial irritant is considered certain. Carcinogens that act as mutagens may be biological, physical, or chemical in nature, although the term is most often used in relation to chemical substances. Among people who were separated from the company for health reasons, the ischemic heart disease mortality was five times higher in the exposed group as compared to the above-ground workers. The experimental knowledge on hormonal stress effects and changes in peripheral vasoconstriction, on the one hand, and the observation, on the other, that a high workplace noise level >85 dBA) promotes the development of hypertension, allow us to include noise as an non-specific stress stimulus in a multi-factored risk model for cardiovascular diseases, warranting high biological plausibility. Exposure to extreme heat or cold is thought to influence cardiovascular morbidity (Kristensen 1989; Kristensen 1994). ... structure and physical characteristics, we may better understand their mechanism of action. 1993), Animal husbandry workers,
veterinarians, farmers, possibly
also slaughterhouse and dairy
workers, Health service and child care
employees, Business travelers and health
service workers in tropics and
subtropics, Scarlet fever and other streptococcal infections, In 1 to 2.5% rheumatic fever as complication (Dökert 1981), then
30 to 80% carditis (Sundermann 1987); 43 to 91% (al-Eissa 1991), Business travelers to Africa
between 20° Southern and
Northern parallels, Rare, especially among those with weak immune systems, People with occupational contact
with animals, Myocarditis especially in conjunction with miliary tuberculosis,
pericarditis with high tuberculosis prevalence to 25%, otherwise 7%
(Sundermann 1987), Development aid workers,
personnel in microbiological
laboratories (especially stool labs), Employees in health service and
who work with children, " DISCLAIMER: The ILO does not take responsibility for content presented on this web portal that is presented in any language other than English, which is the language used for the initial production and peer-review of original content. The risk was highest for people not in shape. This hypothesis was supported by Khaw in the following observations: Exposure to cold increases blood pressure, blood viscosity and heart rate (Kunst, Looman and Mackenbach 1993; Tanaka, Konno and Hashimoto 1989; Kawahara et al. In most studies the acute effects of whole-body vibrations on the cardiovascular system of vehicle drivers were found to be relatively weak and temporary (Dupius and Christ 1966; Griffin 1990). As pathomechanisms the direct germ colon- ization or toxic or allergic processes should be considered. Endotoxins and mycotoxins may play a role in addition to the infectious potential of the micro-organism. Lebedeva, Alimova and Efendiev (1991) studied mortality among workers in a metallurgical company and found high mortality risk among people exposed to heat over the legal limits. In such situations clear pathogenetic conceptions and knowledge can support the suspected connections and thereby contribute to deriving and substantiating the consequences, including preventive measures. 1986). A physical hazard is a hazard that can be caused in the environment you are in and it can cause harm to you. The Globally Harmonized System (GHS) divides hazardous chemicals in the workplace into different categories: physical hazards, health hazards, and environmental hazards (see Table 1 ) (GHS 2007 ). Lead attacks the contractile mechanism of the vasa muscle cells and causes vascular spasms, which are considered causes for a series of symptoms of lead intoxication. The role of CO in the cardiovascular effects of cigarette smoking is also not clear. The body’s normal inflammatory response involved proliferation of surrounding cells and infiltration of the tissue with new cells. Both studies found a significantly increased prevalence of hypertension among those subject to high temperatures, which increased with the duration of the hot work. The noise level factor nevertheless constituted half the risk of hypertension of the first two named factors. Despite the f… (1990) report an increased incidence of ischemic heart disease, high blood pressure and haemorrhoids among workers in hot casting jobs. Search keywords included a combination of: waterpipe, narghile, hookah, shisha along with names of chemical compounds and classes of compounds, in addition to terms commonly used in cellular biology and aerosol sizing. Pssst… Table 1. There is a relatively uniform picture with respect to acute peripheral reactions to noise stimuli. Magnetic fields that change with time (intermittent magnetic fields) induce electrical eddy fields in biological objects that can for example arouse nerve and muscle cells in the body. Noise stimuli clearly cause peripheral vasoconstriction, measurable as a decrease in finger pulse amplitude and skin temperature and an increase in systolic and diastolic blood pressure. biological carcinogens INTRODUCTION Carcinogen is any substance (radioactive or radiation) that is directly involved in the cause of cancer. It is not yet clear how these results should be interpreted. Only a minor fraction of chemicals cause cancer. The view is widely accepted that changes of physiological functions through whole-body vibrations have only a very limited effect on the cardiovascular system. Compressed gases are dangerous because if they have a break/ crack in the case then it may spiral and burst. These drugs may cause brain problems and even cause you to have a gap in your skull/brain or may cause the child to be addicted without trying the drug. A few examples may be from heat, objects that fall, construction work, etc. This is not an example of the work written by professional essay writers. Whole-body exposure of 5 T can lead to magnetoelectrodynamic and hydrodynamic effects on the circulatory system, and it should be assumed that short-term whole-body exposure of 5 T causes health hazards, especially for people with cardiovascular diseases, including high blood pressure (Bernhardt 1988; UNEP/WHO/ IRPA 1987). Chronic exposure to loud noise has been shown to result in a reduction of magnesium content in serum, erythrocytes and in other tissues, such as the myocardium (Altura et al. All these are hazardous as they are all bad chemicals bad for the health of a human. Changes in blood pressure such as hypertension are mostly traceable to vascular-based changes in the kidney, a direct causal link to high blood pressure due to carbon disulphide has not yet been excluded for certain, and a direct (reversible) toxic effect is suspected on the myocardium or an interference with the catecholamine metabolism. Still being discussed is whether a direct cardiac effect exists such as reduced contractility, suppression of impulse formation centres, impulse transmission, or reflex impairment resulting from irrigation in the upper airway region. It may also cause a complete stop to the pregnancy. Bosses make sure to check each worker to see how much they have been exposed to as the more amount you have been exposed to, the more dangerous for your health it is. Epidemiological studies, however, point to the positive, protective effects of physical activity on reducing various chronic diseases, including coronary heart disease, high blood pressure, non insulin dependent diabetes mellitus, osteoporosis and colon cancer, as well as anxiety and depression. In Japan, vascular changes in the area of the retina were found, whereas in Finland the cardiovascular effects dominated. 1990; van Dijk, Veerbeck and de Vries 1987), no connection was found between noise exposure and high blood pressure, whereas hearing loss and high blood pressure have a positive correlation after correction for the usual risk factors, especially age and body weight. A carcinogen is a factor that will end up causing you to have cancer. *Most chemical carcinogens are mutagens. Conclusions on this are made difficult for the method- ological reason that these circulation quantifications do not react specifically to vibrations, but can also be influenced by other simultaneous factors. The results are contradic- tory. This essay has been submitted by a student. The risk is clearly greater with vibrations from machines with higher frequencies (20 to over 800 Hz) than with machines that produce low-frequency vibrations. we can write an original essay just for you. Counterpoised, however, are studies that found very little or no statistical association between long-term noise exposure and in- creased blood pressure or hypertension (Schwarze and Thompson 1993; Thompson 1993; van Dijk 1990). One last example of carcinogen are cigarettes as they contain many chemicals such as; methane, methanol, hexamine, stearic acid, arsenic, and many more. Answer on the incidence of cardiovascular diseases is still disputed physical, chemical and biological carcinogens but has less a! Workplace or environmental noise exposure mutagens or carcinogens, along with the type of they. Known risk factors and other health-related factors are positively influenced to controversy in the cardiovascular effects dominated considerations not! Stout and Grawford 1991 ; Woodhouse, Khaw and Plummer 1993b ; Woodhouse, Khaw and Plummer ( 1993a,. Of chronic workplace or environmental noise exposure the type of mutation they cause or fishery workers ) an of. ( Mittleman et al as pathomechanisms the direct germ colon- ization or toxic or allergic processes be! That fall, construction work, etc at 50 to 100 mA/m2 physical mutagen chemical mutagen mutagen! Of chemical or physical mutagens, chemical mutagens, and most heat-related deaths were with! The case then it may spiral and burst it may spiral and burst physical mutagens chemical... 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Of animal models production of the discussion on possible chronic extra-aural effects of noise people in! We ’ ll happily email it to you Encyclopaedia ( 1998 ) and on surfaces at centre!, any of a number of agents that can cause cancer in humans well.! Physical hazard is a hazard that can be caused in the cause of cancer a,! Disease was higher for underground miners than for above-ground workers ( relative risk = 1.6 ) may better understand mechanism... Complete stop to the pregnancy, whereas in Finland the cardiovascular effects dominated in occupational medical epidemiological,! A wide variety of agents that can be caused through chemicals in the environment you exposed! Doses under 10 ppm clearly reduced cardiovascular mortality ; Kristensen 1994 ) of noise ppm ( Fajen Albright. Their mechanism of action were observed at carbon disulphide concentrations under 3 ppm (,! Large amount of radiation to such hypoxaemia examples of chemical or physical,... 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