Source: Elderly Man; Public Domain: http://en.wikipedia.org/wiki/File:003_p4_dd.JPG
The technical term for aging.
A form of dementia that is caused by a degeneration of neurons and synapses of the cerebral cortex that causes memory loss and other complications as the disease progresses.
The most abundant protein in the human body, collagen is a large fibrous structural protein found in many connective tissues.
A thinner, “stringier” protein than collagen, elastin allows tissues to be stretched when pressure is applied to them and resume their shape once pressure is relieved.
Referred to as “male menopause”, andropause is when testosterone levels, libido and fertility decline with age; however males are still able to conceive a child (unlike women).
The cessation of menstrual cycles in females that marks the end of her fertility.