Vitamin D Essay Example | Topics and Well Written Essays - 500 words - 1

Vitamin D - Essay Example The production of this very specific sub-type of Vitamin D that is Vitamin D3, takes place in the human skin. It is produced in the skin when a chemical called 7-dehydrocholesterol is in a chemical reaction with ultraviolet rays.The bi-weekly requirement of a normal human being is ten to twenty minutes of exposure to the sunlight, on either their arms, hands, back or the face without the application of a sunscreen. For this exposure, the ultraviolet exposure index must reach more than three. The case where there is exposure for a longer time, the supply of the vitamin produced may degrade very quickly – as quickly as it may be produced, in most cases. Vitamin D3 plays an important role in the absorption of calcium and phosphorus from the body. It also helps in the proper functioning of the minerals. Calcium and phosphorus form an important component of bones and teeth. The osteoclastic (bone breaking cells) cells break the bones to generate calcium when needed. Low levels of c alcium and phosphorus can hence cause different bone related disorders and dental problems. As a result, Vitamin D3 can also be an important factor in preventing rickets, osteomalacia and osteoporosis. The usage of Vitamin D3, at a normal rate, may not have any side effects; however, if taken in excess, it may make the user nauseate and may result in constipation. Vitamin D3 can be a source of causing kidney diseases, liver diseases and may result in causing a difficulty in absorbing nutrients from food.

Pauls prison epistles (Ephesians, Colossians, Philemon, and Research Paper

Pauls prison epistles (Ephesians, Colossians, Philemon, and Philippians) - Research Paper Example His fashion majorly credits his apostolic ability to Jesus Christ and the will of God. Evidence is in the wording and letter structure that is unique of all Paul’s writings. The epistle of Ephesians was written in Rome in A.D 60 (Walvoord & Zuck 434). This is well explained by the opening of the revelation of John of Patmos. The revelation shows that John was aware of Paul’s letters to seven centers of Christianity in which Ephesus was one of them. Another evidence is the letter known as ‘I Clement’ written in A.D 96 by Clement, Bishop of Rome to the church at Corinthian (Ackroyd 3). According to the salutation that Paul uses, the epistle was a general letter meant for several readers. In the opening greetings, Paul conveys his greetings to God’s people at Ephesus while in some manuscript like in the beginning of chapter three, the word Ephesus is omitted and instead the word Gentiles is used. This shows that this letter was meant to be read in a number of churches in the province of Asia, of which Ephesus was one of them. The occasion for writing this latter is not clear since it does not have a specific audience. However, the book of acts brings out Paul as having spent a significant time on his last visit to Ephesus. In his time in Ephesus, he taught and baptized disciples, taught in the synagogue and the cities where he met a conflict with the pagans. It was in the same occasion that he did a speech of exhortation to the city elders. Therefore, the events mentioned could be suggested as the occasions that lead Paul to write this Epistle (BibleU 1). This letter was written when Paul was in prison in Rome. The supporting evidence is that it was sent together with the letter to Colossae, Philemon, and Philippians, which were all written in a Roman prison. In this letter there is no evidence of who he was with while writing this letter. According to Bruce (245), the epistle was written as an encouragement to