Hair usually begins to gray in middle adulthood due to:
A) a decrease in the production of melanin.
B) the replacement of muscle tissues by fat tissues.
C) an increase in the production of insulin.
D) the shrinking of heart and lung muscles.

Question

Hair usually begins to gray in middle adulthood due to:​
A) a decrease in the production of melanin.
B) the replacement of muscle tissues by fat tissues.
C) an increase in the production of insulin.
D) the shrinking of heart and lung muscles.

Quizplus · Accepted Answer

Gray hair is caused by a decrease in the production of melanin, the pigment that gives hair its color. This decrease is a normal part of the aging process and usually begins to occur in middle adulthood.

Hair Usually Begins to Gray in Middle Adulthood Due To:​

Hair Usually Begins to Gray in Middle Adulthood Due To: