How does aging occur?
** * Aging results as protein synthesis declines and cells no longer respond correctly to cues from other cells. Or no longer send correct cues to their neighbors. Or both. * Aging, in this view, is a cell communication failure that results from shortened telomeres. ++++++++++++++++++++++++++++++++++++++++++++++++++++ (Permission to reprint given if the following resource box is included.) ++++++++++++++++++++++++++++++++++++++++++++++++++++ Dr. Lendon Smith of television fame provides the content for Alternative Health Tips ezine. To get your FREE subscription to AAA Alternative Health Tips you may subscribe at our web page http://www.iwr.com/ezine ++++++++++++++++++++++++++++++++++++++++++++++++++++ * Stressed? Can’t Concentrate? Hyperactive? Try beCALM’D * Here is a list of a few of the testimonies we’ve received on how beCALM’d has helped others with these problems. * Off of the Ritalin * Lack of Concentration * ADD ADD Mom & ADHD Son * Behavior and learning problems. (ADHD) * My h
Aging occurs in DNA as newly forming cells look to their predecessors for their identity in a process analogous to photocopying. Over time, environmental pollution, dietary factors, lifestyle issues and genetic inheritance erode the cellular infrastructure. As the quality of the new cells degrades, the molecules, nutrients and chemicals that circulate in and among the cells become deficient in various nutrients and minerals. This can cause a breakdown in functions throughout the body and, over time, promote accelerated aging.
These questions are usually addressed by separate fields (Sex, Conflict & Aging), but I think of them as specific cases of the more general problem of how traits are expressed and how they evolve. The research in the Priest lab lies at the interface of evolution, behavioural ecology, reproductive physiology and molecular genetics. Much of this work involves parental effects, which occur when the physiology and genotype of mothers influence trait expression in offspring. We have found that older mothers produce offspring with reduced longevity in fruit flies. We have found that maternal exposure to toxic compounds in male seminal fluid stimulates parental effects which improve the fitness of daughters. We have also found that mating increases the rate of genetic recombination in the maternal genome. Population genetic theory and life history models that we have constructed show that parental effects can alter the rate, direction, and endpoint of phenotypic evolution. These findings indi
This is the most interesting scientific question. A large number of theories of aging have been proposed. However, any appropriate theory must explain four main characteristics of aging: it is progressive, endogenous, irreversible, and deleterious for the individual [1]. Ageing is associated with immunosenescence; decreased hormonal secretion, metabolism, lean body, and bone mass; and increased fat accretion. As a consequence, inflammatory diseases, dyslipidemia, atherosclerosis, obesity, and type 2 diabetes incidence increases with age [2]. Most of those prominent features of aging are related to peroxisome proliferator-activated receptors (PPARs) activity. Actually, the elderly population, particularly in the industrialized world, is exposed over its life span to an ever increasing number of agonists of PPARs in the form of various therapeutic agents and environmental pollutants through respiration, in food, and water [3]. Hence in this review, two important PPARs-oriented characteri
Aging occurs in DNA as newly forming cells look to their predecessors for their identity in a process analogous to photocopying. Over time, environmental pollution, dietary factors, lifestyle issues and genetic inheritance erode the cellular infrastructure. As the quality of the new cells degrades, the molecules, nutrients and chemicals that circulate in and among the cells become deficient in various nutrients and minerals. This can cause a breakdown in functions throughout the body and, over time, promote accelerated aging. What do DNA deficiencies and damage have to do with aging? The Human Genome Project showed that hereditary DNA deficiencies and DNA damage [caused by the stressful 21st century environment] are major causes of aging. Aging occurs as newly forming cells look to their predecessors for their identity. If the cells’ DNA is deficient or damaged, the copies will be progressively more so. This can cause a breakdown in functions throughout the body and, over time, promote
