SOMATÓRIO
Hair goes gray because pigment cells in the hair base at the roots of the hair stop producing melanin.
It doesn't matter if you are fair-haired1 or dark-haired2 you have the same chances of getting gray hair. However, it is more noticeable in darker haired people3.
Graying of the hair generally4 starts at the age of around 30 for males and 35 for females however5 since the onset of this phenomenon varies greatly from person6 to person, age is not the most accurate indicator.
The graying of hair appears to be genetically determined but7 the connection isn't at all clear.
So for now, your hair turning gray is just one of those mysteries of science that we have yet to solve. But salt and pepper hair always did look distinguished.
Did you know?
- Poliosis is the graying of the hair. It8 comes from polios, the Greek word for "gray."
Adapted from: http://www.coolquiz.com/trivia/explain/docs/grayhair.asp
De acordo com o texto “Why does hair turn gray?”, é correto afirmar que
(001) se trata de um anúncio voltado para a indústria de cosméticos.
(002) a pergunta proposta no título é respondida no primeiro parágrafo.
(004) homens geralmente ficam grisalhos antes das mulheres.
(008) a idade em que os cabelos começam a ficar grisalhos varia de um indivíduo para outro.
(016) pessoas com cabelos mais claros se tornam grisalhas antes de pessoas de cabelos mais escuros.
(032) Poliose é o nome da doença associada à queda precoce dos cabelos.