Question

1. Theory of Aging: Immunological Theory. Discuss for or against and provide citation and references. Minimum 250 words.

Answer 1

- I. The immunological theory of aging asserts that the of human aging is a mild and generalized form of prolonged autoimmune phenomeon. In other world, ago a highly complex series of processes is suspected to be barcolely controlled by the immune system, and the modern biological theories of aging in humans fall into two main categories proogscammed and damage or error theories and the impact that aging follows a biological time table ,perchaps a continuation of the one that regulates childhood frowth and development. 1. As humans age, they experience changes to almost all physiological functions, including those related to the immune system medical experts have proven that immune function does indeed decrease with age, which contributes to a whole host of well-know issues among seniores fpcom increased the health risks posed by common infections like a cold on the flu to a greatere ocurrence of Chrionic impect inflammas diseases such as gout and some type of anthritis. and" the data function suggests that changes in immune system in the elderly could be a symptom of the aging reverse the relationship and the theorcists believe that common Symptom of aging are caused by change in the immune and the many data in humans support the notice that age -associated immune dysfundion may at least in Park explain the aging process. Explanatorzy power may be I by combination with other theories such as the free radical theory and more longitudinal studies an needed to corroborate the immune theory of aging enha

The human longevity may be influnced by these changes in the immune system, but how they proceed is not clearly determind . In this chapter i we will review the age related changes in immune response are the parimary cause of aging. As you age , Critical cell in the immune system decrease in number and become less functional. Those that are of special interest to gerontologists are the class of white blood cells called lymphocytes, which fight invading bacteria and other Foreign cells. Lymphocytes fall into two major classes :- * B-cells-maturce in the bone marrow one of theire functions is to secrete antibodies in response to infectious agents - ore antigens. cells develop in the thymus which shocinks aftere puberday ze two subtypes, cytotoxic T-cells produce powerze chemicals. Helper T-cells produce Powerful a called lymphokines, which mobilize othere immune a Substances and cells. while the number of T-cells remains fairly con as you of age, the portion of them that prolifercate function dedines, and beyond making you more pron. vees comm and bacterial infections, such immun system changes can have a much greater impact T-cells des tordjed by cancer treatments such as 4 chemotherapy and radiation take longer to reen older people than they do in youngere people. 'ells produce powerful chemicals, mobilize otherc immune system s fairly constant olifercate and ne preone to mune, he ere to renew in