Turn On Age Article For Free

When a person becomes old can be answered in different ways: Chronologic age is based solely on the passage of time. It is a person's age in years. ... Biologic age refers to changes in the body that commonly occur as people age. ... Psychologic age is based on how people act and feel.

There is much debate among researchers about the mechanisms that contribute to the ageing process. However, it is widely accepted that damage to genetic material, cells and tissues that accumulates with age and cannot be repaired by the body is the cause of the loss of function associated with ageing.

Diet and Exercise Improve Enjoyment in Old Age Healthy foods give us the energy we need to engage in physical activity. Exercise sends endorphins, the feel-good hormones, throughout the body. Of course, the social aspects of sharing a meal and getting exercise tie it all together for optimal happiness building.

The nine hallmarks of aging Genomic instability. Telomere attrition. Epigenetic alterations. Loss of proteostasis. Deregulated nutrient-sensing. Mitochondrial dysfunction. Cellular senescence. Stem-cell exhaustion.

Oxidative damage. One major theory sees our metabolism as the cause of our aging. ing to this theory, aging is a by-product of normal metabolism; no mutations are required. About 2?3% of the oxygen atoms taken up by the mitochondria are reduced insufficiently to reactive oxygen species (ROS).

With that in mind, there are four factors related to aging well: maintaining physical function, cognitive function, stress reduction and mental health, and continued involvement in social and spiritual activities.

Some researchers think an accumulation of errors in the epigenome drives aging and that removing the errors by ?reprogramming? cells could lengthen life. Shinya Yamanaka, a Japanese stem-cell researcher, shared a Nobel Prize in 2012 for discovering proteins that reprogram a cell's epigenome to its embryonic state.