| A | B |
|---|
| Parkinson's disease | A neurological disorder caused by a deficiency of the neurotransmitter dopamine |
| fluid intelligence | The ability to develop a solution when confronted with a new problem |
| glaucoma | A disease in which fluid inside the eye is under abnormally high pressure; can lead to the loss of peripheral vision and blindness |
| arthritis | Inflammation of a joint or joints, causing pain and swelling |
| age-related macular degeneration (AMD) | A deterioration of the macula leading to blurred vision and sensitivity to glare |
| presbyopia | The inability of the eyes to focus sharply on nearby objects, caused by a loss of elasticity of the lens that occurs with advancing age |
| cataracts | Opacity of the lens of the eye that impairs vision and can cause blindness |
| osteoporosis | The loss of bone density, causing bones to become weak, porous, and more prone to fractures |
| dementia | Deterioration of mental functioning (including memory, concentration, and judgement) resulting from a brain disorder |
| Alzheimer's disease | A disease characterized by a progressive loss of mental functioning (dementia), caused by a degeneration of brain cells |
| life expectancy | The average length of time a person is expected to live |
| life span | A theoretically projected length of life based on the maximum potential of the human body in the best environment |
| Social Security | A government program that provides financial assistance to people who are unemployed, disabled, or retired (and over a certain age) |
| gerontologist | One who studies the biological, psychological, and social phenomena associated with aging and old age |
| geriatrician | A physician specializing in the diseases, disabilities, and care of older adults |
