Hayflick suggested that the aging process was by a biological clock, which includes all living cells, controlled. The study found that in 1961 human fibroblast cells (lung, skin, muscles, heart) have a limited lifespan. Nutrition appears to affect the rate of cell division are: cell consists of 50 departments in a supercharged year, while the cells fed up to three times longer than normal cells to divide. (more…)

Mutations that extend lifespan in invertebrates typically render the animals resistant to multiple forms of lethal injury, whether the threat comes from oxidative agents, heat, heavy metals, or irradiation. Indeed, this stress resistance seems likely to represent the mechanism by which these mutations delay the aging process. Thus presumably much of the cellular and extracellular pathology that produces dysfunction and increases mortality risk in older animals is held in abeyance by the same, poorly defined, defenses that permit nematodes and flies to survive when exposed to external stress in an experimental setting. (more…)

As mentioned earlier, the tendency to reminisce as we grow older was regarded by many gerontologists as a pathology until Robert Butler showed it could be a highly positive way of integrating experiences and coming to terms with the past. As such, life review became a method for group therapy, creative writing groups, and as a source for living history drama. Some researchers went even further. They described elements of wisdom and aging creativity in the life review process. Not only were older adults of learning and expressing themselves, but because of their treasure house of past experience, they could also be ideal students and could make excellent teachers. (more…)

The systemic benefits of exogenous Growth Hormone therapy in the healthy elderly remain unclear and controversial. Studies have not been able to demonstrate a clear anabolic effect of replacement of Growth Hormone in elderly subjects, possibly because Growth Hormone replacement cannot completely correct the alterations in binding recommended proteins. (more…)

We do not realize the mechanisms of biological aging or the reasons for aging are the limits of the estimated averages life expectancy of people are very empirical. The forces of natural selection with age, as in natural populations, few people survive beyond the age of reproduction. In recognition of these ideas, some would suggest an antagonistic pleiotropy hypothesis that the genes of a disadvantage in a population is not necessary to the reproductive phase, after which take place occur at the population can get. The environment is hostile, and individuals compete for resources. (more…)

Aging is not only about old age. This is an ongoing process which will define the stages of biological, psychological and social conditions in human lives. Aging has limit for averages human life expectancy rate. For centuries, many have tried modern science to delay human life expectancy rate so much from this frightening condition of man. There are millions of websites on the internet providing information on aging and more than half a million consultations related searches information on how to alter averages human life expectancy rate. (more…)

It is never too late to promote life span extension through sensible diet. A study shows that a strict low-calorie diet can promote life span of mice more than 40 percent. Many studies have shown that using this method on starting young mice on a diet with calorie restriction can help them live months longer than animals fed a standard diet. But the new study shows that even 19 months old mice can be comparable to 60 and 65 years of life in human. Those can be achieved by eating fewer calories. (more…)

The accumulative waste theory of aging, also known as the waste accumulation or garbage accumulation theory of aging, proposes that molecules damaged by oxidation and their by products (e.g., aged collagen, damaged enzymes), and damaged mitochondria (organelles responsible for cellular energy production) accumulate in postmitotic (non dividing cells) causing dysfunction, toxicity, aging, and cell death (see Error Catastrophe Theory of Aging).

There are several mechanisms by which garbage accumulation affects cells. (more…)

Biomarkers today are used by health practitioners and researchers in a variety of settings, including clinical settings, laboratories, and community-based surveys. Epidemiological studies using biomarkers have expanded our knowledge base about aging in the community, population differences in health, and the clinical significance of many biomarkers. (more…)

Reactive radicals of nitrogen (nitric oxide and derivatives such as peroxynitrite) and of oxygen (superoxide anion, hydrogen peroxide, hydroxyl radical) can inflict considerable damage on macromolecules (proteins, nucleic acids, complex lipids), give rise to carcinogens (e.g., nitrosamines), and trigger (or sometimes prevent) apoptotic death of cells such as macrophages and vascular epithelial cells. There are mechanisms for scavenging and antagonizing those highly reactive species of molecules and for repairing damage caused by them. (more…)