Introduction

The aging processes, and interventions to ameliorate them, have fascinated humans since the dawn of civilization. Research into aging is now a vital area of human endeavor, as our species reaches the limits of its longevity and faces the prospect of an aging population.

This article aims to highlight the processes involved with aging and how they affect the entire hierarchical structure of living organisms, from molecules to cells, tissues, organs, and systems. Accordingly, many theories have evolved to explain the aging processes at each of these levels. A brief overview of these theories will highlight the framework for investigations into the aging processes with the ultimate aim of reducing their deleterious effects, such as age-related disease, perhaps with nutritional and molecular biological intervention strategies.

The term 'aging' can have a wide variety of different meanings in different circumstances. For example, the normal processes from birth, through growth and maturation, an extended period of adulthood, and on to senescence can be thought of as aging.

The term is used here to describe a progressive sequence of detrimental age-related changes that are observed to occur in every individual of a given species, although they may appear at different rates. These changes lead to a breakdown in the normal homeostatic mechanisms, with the result that the functional capacity of the body and its ability to respond to a wide variety of extrinsic and intrinsic agents is often decreased. This causes the degradation of structural elements within the cells, tissues, and organs of the body, leading eventually to the onset of age-related disorders and ultimately death.

How To Add Ten Years To Your Life

How To Add Ten Years To Your Life

When over eighty years of age, the poet Bryant said that he had added more than ten years to his life by taking a simple exercise while dressing in the morning. Those who knew Bryant and the facts of his life never doubted the truth of this statement.

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