Hair change with agingOlder people tend to develop gray hair (actually colorless) because the pigmentation in the hair is lost and the hair becomes colorless. Gray hair is considered to be a characteristic of normal aging. The age at which this occurs varies from person to person, but in general nearly everyone 75 years or older has gray hair, and in general men tend to become gray at younger ages than women.
People starting out with very pale blond hair usually develop white hair instead of grey hair when aging.
Red hair usually doesn't turn grey as redheads age; red hair usually turns a sandy color and then turns white after that.
Some degree of scalp hair loss or thinning generally accompanies aging in both males and females, and it's estimated that half of men are affected by male pattern baldness by the time they're 50. The tendency toward baldness is a trait shared by a number of other primate species, and is thought to have evolutionary roots. (See evolutionary theories of baldness). There are also perhaps 50,000 bald women in the U.S.
Table of Contents:
Types of hair