Write a 7 pages paper on protein and amino acid requirements in the adults. Life standard continues to increase tremendously in response to technological advancement, so does the average human lifespa

Write a 7 pages paper on protein and amino acid requirements in the adults. Life standard continues to increase tremendously in response to technological advancement, so does the average human lifespan and it is frequently claimed by research literature that advancing age forms a critically important factor capable of influencing the protein and AA metabolism and thereby requirements in the adults. The growing incidence of the most frequent health problems in the present age like diabetes, cardiovascular diseases, and cancer is also associated with advancing age and relationship between such diseases and protein and AA requirements are established in myriad research studies. In addition to advancing age which is a heavily recognized factor now, multiple other factors also influence the protein and AA metabolism and requirements in the adults of which the most widely researched ones will be contemplated in this essay.

Nitrogen balance studies based data is riddled with variations due to which “despite years of research, amino acid requirements remain a controversial issue” (Duncan, Ball, and Pencharz, 1996, p. 718. Gibson et al., 2002, p. 511). This is also a complex issue because of the variability in proteins AA composition and adult protein intake (Millward, Fereday, Gibson, and Pacy, 2000, p. 112). A dietary protein intake of 118g/d for adults of average weight engaged in average physical activity was considered a standard for most of the late 19th century but the general consensus as reported by historical evidence was that “the protein element should amount to over 100 g a day, and the energy value should be over 3000 calories” (McCay, cited in Rand et al., 2003, p. 109). However, the dietary standard was challenged by Chittenden by the turn of the 20th century who claimed that 118g/d could not be considered an appropriate dietary standard as one-half of this amount taken daily by adults could be more than enough to maintain vigor and meet the physiological needs of the human body.&nbsp.