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AMD is considered a complex disorder, caused by a combination of genetic and environmental factors. AMD exhibits multifactorial inheritance, and the many factors interact with one another and cause the condition. The aging process is one of the st...
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AMD is considered to be a complex disorder, likely caused by a combination of genetic and environmental factors. This type of disorder is caused by multifactorial inheritance, which means that many factors likely interact with one another and caus...
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Starting at what is commonly called middle age, operations of the human body begin to be more vulnerable to daily wear and tear; there is a general decline in physical, and possibly mental, functioning. In the Western countries, the length of life is often into the 70s.
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Aging is the process of growing older, a process that includes physical changes and, sometimes, mental changes. "The aged" refers to elderly people, those who have reached an advanced age.
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Starting at what is commonly called middle age, operations of the human body become more vulnerable to daily wear and tear. There is a general decline in physical, and possibly mental, functioning.
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This term is used by demographers when referring to an increase over time in the proportion of older persons in the population. It does not necessarily imply an increase in life expectancy, that " people are living longer that they used to, " or that they are dying on average at older ages, although these phenomena are usually observed in association with aging of the population.
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