Assignment Help & Custom Essay Help In Vitamin D Deficiency In Australia
Vitamin D is group of prohormones, which do not have hormone activity by itself but
by a complex mechanism become active hormones as per the assignment help team. They are soluble in fat. There are five forms of vitamin D ranging from vitamin D1 to Vitamin D5, but the most important ones are vitamin D2 also known as ergocalciferol, and vitamin D3 or cholecalciferol (as researched by assignment help experts). Collectively they are known as calciferol. Invertebrates, fungus and plants produce Vitamin D2 for their protection from the harmful UV radiation. Vertebrates cannot produce Vitamin D2. However, vertebrates can produce Vitamin D3. 7-dehydrocholesterol reacts with UVB radiation in human skin (custom essay help experts in biology) and produces Vitamin D3. UV B radiation has a wavelength of 270-300nm and is present in natural sunlight when the UV index is greater than three shown by help with assignment writing experts. If UVB is exposed to the body for a long time, equilibrium is achieved between generation and degradation of vitamin D3 information by custom essay help experts in biology. According to the Institute of Medicine (2006) and assignment help biology experts, vitamin D3 is more effective than vitamin D2 in human beings.Deficiency of Vitamin D by My Assignment Help .com
The main cause for vitamin D deficiency is the reduced intake or synthesis of cholecalciferol which might be due to reduced exposure to sunlight, reduced synthesis of vitamin D from given UVB exposure, low consumption of foods with high content of vitamin D as analyzed by assignment help team. Disorders like small bowl disorder, pancreatic insufficiency and biliary obstruction are also important causes of Vitamin D deficiency declared by custom essay help experts in biology. The other reason is the reduced synthesis or enhanced degradation of 25OHD, which mainly, occurs in people who are suffering from chronic disorders like hepatitis and cirrhosis. Other reasons found by assignment help experts, are the limited absorption of vitamin D due to impaired gastrointestinal tract. Liver or kidney disorders results in impaired conversion of vitamin D into active metabolites necessary for important biochemical reactions. Skin color and body fat is also a major determinant for the deficiency of vitamin D in the body as dark skinned people have difficulty to synthesize vitamin D through the exposure of UVB rays. Researcher My assignment Help .com at Hereditary is rarely responsible for vitamin D deficiency. According to Grant & Holick (2005), vitamin D deficiency results in bone softening diseases because of impaired mineralization of bones.
Following are the main medical conditions resulting due to the deficiency of vitamin D. (source assignment help expert)
Rickets is a medical condition-affecting child, in this, the bones are deformed and long bones have impeded growth.
Osteomalacia is medical condition affecting the adults. In this disorder thinning of bones, occur along with the weakness of proximal muscles resulting in bone fragility making the bones susceptible to fracture as informed by custom essay help experts in biology.
Osteoporpsis is the condition in which the bone mineral density is reduced due to lack of vitamin D. This results in fragile bone, which is susceptible to fracture as found by custom essay help experts in biology.
It has been found that vitamin D deficiency also results in increased susceptibility of several chronic diseases like high blood pressure, cancer, chronic pain, tuberculosis and seasonal affective disorder (assignment help, 1999). Some researchers at assignment help have also found that lack of vitamin D results in peripheral artery disease and cognitive impairment resulting in memory loss. Some studies by assignment help team had led to the conclusion that vitamin D deficiency also causes type 1 diabetes.
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