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( Senescence) Senescence or biological aging is the change in the biology of an organism as it ages after its maturity. Such changes range from those affecting its cells and their function to that of the whole organism. There are a number of theories why senescence occurs including those that it is programmed by gene expression changes and that it is the accumulative damage of biological processes.

The word senescence is derived from the Latin word senex, meaning "old man" or "old age" or "advanced in age".

Differences in maximum life span among species correspond to different "rates of aging". For example, inherited differences in the rate of aging make a mouse elderly at 3 years and a human elderly at 80 years.^{[citation needed]} These genetic differences affect a variety of physiological processes, including the efficiency of DNA repair, antioxidant enzymes, and rates of free radical production.

Senescence of the organism gives rise to the Gompertz–Makeham law of mortality, which says that mortality rate rises rapidly with age.

Senescence Subcategories Senescence Articles How To Age Gracefully by Sheila Berg Anti-aging addresses how to prevent, slow, or reverse the effects of aging and help people live longer, healthier, happier lives. In contrast to life extension, which places more emphasis on the science behind aging, the term anti-aging is more often... Tips About Anti Aging Skin Care by Messaoudi Adel Antiaging skin care is a very poplar conception in today’s world. Now everyone desires to hide their age practising antiaging skin care processes (and a number of people are booming too). However antiaging skin care is not accomplished by a... Effects of ginseng in the aging process of human beings by Rigler Jason No one likes to look old or want to feel old. Everyone wants to be physically active and young forever. But this is not possible… one gets old with times. Ginseng is one of the most generally used “anti aging medicine”. According to various studies, ... Scientists Develop Anti-Aging Compound Using MAGIC by Carson Danfield by Carson Danfield South Korea, who's previous sterling reputation for biotech was recently besmirched, is returning to the scientific lime light. Researchers at the Korea Advanced Institute of Science and Technology are challenging the most deadly of all diseases... A... Seven primary causes for aging by shijina mukundan Aging is been scientifically studied over a century now by Biogerontolgists. They have defined seven basic causes for aging during that time. The last reason for aging was found in 1981, and no other reason is been discovered after that. In perspecti... Anti-Aging with Carnosine by Bruce Hollingdrake What is Anti Aging Carnosine? To be frank not much is known about this dipeptide right know. Carnosine has already been given the nickname the anti-aging dipeptide as it has shown some positive anti-oxident properties. Carnosine is a water-soluble fr... Delaying Age-related Functional Decline - A Multi-Pronged Approach - Part 1: Nutrition by Frank Wilhelmi I don’t think I was the first to use the expression ‘age-related functional decline’, but I think it an excellent descriptive summary of what happens as we age. Aging, as we experience it, is the result of many related physiological processes slow... Anti-Aging Products versus the Benefits of a Healthy Lifestyle by Sara Schell On one hand, we have cosmetic companies and plastic surgeons telling us that we need to buy creams, have ourselves injected with botox or collagen; get nips, tucks, and lifts; brave the possible dangers of hormone replacement therapy and pray for a m... Promoting Mitochondrial Health - Nutrients That Optimize Cellular Energy by Dale Kiefer LE Magazine February 2005 Promoting Mitochondrial Health - Nutrients That Optimize Cellular Energy By Dale Kiefer Mitochondria, the powerhouses in each human cell, have the crucial job of generating energy for use throughout the...