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Slave Health On Plantations In The United States
The health of slaves on American plantations was a matter of concern to both slaves and their owners. Slavery had associated with it the health problems commonly associated with poverty. It was to the economic advantage of owners to keep their working slaves healthy, and those of reproductive age reproducing. Those who could not work or reproduce because of illness or age were sometimes abandoned by their owners, expelled from plantations, and left to fend for themselves. Life expectancy A broad and common measure of the health of a population is its life expectancy. The life expectancy in 1850 of a white person in the United States was forty; for a slave, thirty-six. Mortality statistics for whites were calculated from census data; statistics for slaves were based on small sample-sizes. Diseases among slaves European physicians in the West Indies frequently shared their knowledge of black-related diseases with North American colleagues. Diseases that were thought to be "negro dis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plantation Complexes In The Southern United States
A plantation complex in the Southern United States is the built environment (or complex) that was common on agricultural plantations in the American South from the 17th into the 20th century. The complex included everything from the main residence down to the pens for livestock. Until the abolition of slavery, such plantations were generally self-sufficient settlements that relied on the forced labor of enslaved people. Plantations are an important aspect of the history of the Southern United States, particularly the antebellum era (pre-American Civil War). The mild temperate climate, plentiful rainfall, and fertile soils of the southeastern United States allowed the flourishing of large plantations, where large numbers of enslaved Africans or African Americans were held captive and forced to produce crops to create wealth for a white elite. Today, as was also true in the past, there is a wide range of opinion as to what differentiated a plantation from a farm. Typically, th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Syphilis
Syphilis () is a sexually transmitted infection caused by the bacterium ''Treponema pallidum'' subspecies ''pallidum''. The signs and symptoms of syphilis vary depending in which of the four stages it presents (primary, secondary, latent, and tertiary). The primary stage classically presents with a single chancre (a firm, painless, non-itchy skin ulceration usually between 1 cm and 2 cm in diameter) though there may be multiple sores. In secondary syphilis, a diffuse rash occurs, which frequently involves the palms of the hands and soles of the feet. There may also be sores in the mouth or vagina. In latent syphilis, which can last for years, there are few or no symptoms. In tertiary syphilis, there are gummas (soft, non-cancerous growths), neurological problems, or heart symptoms. Syphilis has been known as "the great imitator" as it may cause symptoms similar to many other diseases. Syphilis is most commonly spread through sexual activity. It may also be transmi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Milk
Milk is a white liquid food produced by the mammary glands of mammals. It is the primary source of nutrition for young mammals (including breastfed human infants) before they are able to digestion, digest solid food. Immune factors and immune-modulating components in milk contribute to milk immunity. Early-lactation milk, which is called colostrum, contains antibody, antibodies that strengthen the immune system, and thus reduces the risk of many diseases. Milk contains many nutrients, including protein and lactose. As an agricultural product, dairy milk is Milking, collected from farm animals. In 2011, Dairy farming, dairy farms produced around of milk from 260 million dairy cows. India is the world's largest producer of milk and the leading exporter of skimmed milk powder, but it exports few other milk products. Because there is an ever-increasing demand for dairy products within India, it could eventually become a net importer of dairy products. New Zealand, Germany and the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vitamin A
Vitamin A is a fat-soluble vitamin and an essential nutrient for humans. It is a group of organic compounds that includes retinol, retinal (also known as retinaldehyde), retinoic acid, and several provitamin A carotenoids (most notably beta-carotene -carotene. Vitamin A has multiple functions: it is essential for embryo development and growth, for maintenance of the immune system, and for vision, where it combines with the protein opsin to form rhodopsin the light-absorbing molecule necessary for both low-light (scotopic vision) and color vision. Vitamin A occurs as two principal forms in foods: A) retinol, found in animal-sourced foods, either as retinol or bound to a fatty acid to become a retinyl ester, and B) the carotenoids alpha-carotene, β-carotene, gamma-carotene, and the xanthophyll beta-cryptoxanthin (all of which contain β-ionone rings) that function as provitamin A in herbivore and omnivore animals which possess the enzymes that cleave and convert provi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vitamin A Deficiency
Vitamin A deficiency (VAD) or hypovitaminosis A is a lack of vitamin A in blood and tissues. It is common in poorer countries, especially among children and women of reproductive age, but is rarely seen in more developed countries. Nyctalopia (night blindness) is one of the first signs of VAD, as the vitamin has a major role in phototransduction. Xerophthalmia, keratomalacia, and complete blindness can follow if the deficiency is more severe. Vitamin A deficiency is the world's leading cause of preventable childhood blindness, and is critical to achieving Millennium Development Goal 4 to reduce child mortality. About 250,000 to 500,000 malnourished children in the developing world go blind each year from a deficiency of vitamin A, around half of whom die within a year of becoming blind. The United Nations Special Session on Children in 2002 set a goal of the elimination of VAD by 2010. The prevalence of night blindness due to VAD is also high among pregnant women in many develop ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tsetse Fly
Tsetse ( , or ) (sometimes spelled tzetze; also known as tik-tik flies), are large, biting flies that inhabit much of tropical Africa. Tsetse flies include all the species in the genus ''Glossina'', which are placed in their own family, Glossinidae. The tsetse are obligate parasites, which live by feeding on the blood of vertebrate animals. Tsetse have been extensively studied, because of their role in transmitting disease. They have a prominent economic impact in sub-Saharan Africa, as the biological vectors of trypanosomes, causing human and animal trypanosomiasis. Tsetse are multivoltine and long-lived, typically producing about four broods per year, with up to 31 broods over their lifespans. Tsetse can be distinguished from other large flies by two easily-observed features: Primarily, tsetse fold their wings over their abdomens completely when they are resting (so that one wing rests directly on top of the other); Secondly, tsetse also have a long proboscis, extending d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lactose Intolerance
Lactose intolerance is a common condition caused by a decreased ability to digest lactose, a sugar found in dairy products. Those affected vary in the amount of lactose they can tolerate before symptoms develop. Symptoms may include abdominal pain, bloating, diarrhea, flatulence, and nausea. These symptoms typically start thirty minutes to two hours after eating or drinking milk-based food. Their severity typically depends on the amount a person eats or drinks. Lactose intolerance does not cause damage to the gastrointestinal tract. Lactose intolerance is due to the lack of the enzyme lactase in the small intestines to break lactose down into glucose and galactose. There are four types: primary, secondary, developmental, and congenital. Primary lactose intolerance occurs as the amount of lactase declines as people age. Secondary lactose intolerance is due to injury to the small intestine. Such injury could be the result of infection, celiac disease, inflammatory bowel disease, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Antebellum South
In History of the Southern United States, the history of the Southern United States, the Antebellum Period (from la, ante bellum, lit=Status quo ante bellum, before the war) spanned the Treaty of Ghent, end of the War of 1812 to the start of the American Civil War in 1861. The Antebellum South was characterized by the Slavery in the United States, use of slavery and the Culture of the Southern United States#History, culture it fostered. As the era proceeded, Southern intellectuals and leaders gradually shifted from portraying slavery as an embarrassing and temporary system, to a full-on defense of Slavery as a positive good in the United States, slavery as a positive good, and harshly criticized the budding Abolitionism in the United States, abolitionist movement. The economy was largely plantation based, and dependent on exports. Society was stratified, inegalitarian, and perceived by immigrants as lacking in opportunities. Consequently the manufacturing base lagged behind t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Antebellum Slavery
The legal institution of human Slavery#Chattel slavery, chattel slavery, comprising the enslavement primarily of List of ethnic groups of Africa, Africans and African Americans, was prevalent in the United States, United States of America from its founding in 1776 until 1865, predominantly in the Southern United States, South. Slavery was established throughout European colonization of the Americas, European colonization in the Americas. From 1526, during early Slavery in the colonial history of the United States, colonial days, it was practiced in what became British America, Britain's colonies, including the Thirteen Colonies that formed the United States. Under the law, an enslaved person was treated as property that could be bought, sold, or given away. Slavery lasted in about half of U.S. states until Thirteenth Amendment to the United States Constitution, abolition. In the decades after the end of Reconstruction era, Reconstruction, many of slavery's economic and soci ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dysaesthesia Aethiopica
In psychiatry, dysaesthesia aethiopica ("Black (Ethiopian) bad feeling) was an alleged mental illness described by American physician Samuel A. Cartwright in 1851, which proposed a theory for the cause of laziness among slaves. Today, ''dysaesthesia aethiopica'' is not recognized as a disease, but instead considered an example of pseudoscience, and part of the edifice of scientific racism. History Found exclusively among African Americans, dysaesthesia aethiopica – called '' rascality'' by the overseers – was characterized by partial insensitivity of the skin and "so great a hebetude of the intellectual faculties, as to be like a person half asleep." Other symptoms included "lesions of the body discoverable to the medical observer, which are always present and sufficient to account for the symptoms." Cartwright contended that the existence of dysaesthesia aethiopica was "clearly established by the most direct and positive testimony," but other doctors had failed to notice it ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Drapetomania
Drapetomania was a supposed mental illness that, in 1851, American physician Samuel A. Cartwright hypothesized as the cause of enslaved Africans fleeing captivity. This hypothesis centered around the belief that slavery was such an improvement upon the lives of slaves that only those suffering from some form of mental illness would wish to escape. Cartwright specifically cited the tendency of slaves to flee the plantations that held them. Since slaves happy with their condition would not want to leave, he inferred that such people had to be sick, impervious to the natural order of things. He published an article about black slaves' illnesses and idiosyncrasies in a widely circulated Southern journal. Contemporarily reprinted in the South, Cartwright's article was widely mocked and satirized in the northern United States. The concept has since been debunked as pseudoscience and shown to be part of the edifice of scientific racism. The term derives from the Greek δραπέτης ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nutrition
Nutrition is the biochemical and physiological process by which an organism uses food to support its life. It provides organisms with nutrients, which can be metabolized to create energy and chemical structures. Failure to obtain sufficient nutrients causes malnutrition. Nutritional science is the study of nutrition, though it typically emphasizes human nutrition. The type of organism determines what nutrients it needs and how it obtains them. Organisms obtain nutrients by consuming organic matter, consuming inorganic matter, absorbing light, or some combination of these. Some can produce nutrients internally by consuming basic elements, while some must consume other organisms to obtain preexisting nutrients. All forms of life require carbon, energy, and water as well as various other molecules. Animals require complex nutrients such as carbohydrates, lipids, and proteins, obtaining them by consuming other organisms. Humans have developed agriculture and cooking to replace for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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