Question

Puberty Comes Earlier and Earlier for Girls


In girls, puberty is commonly defined as breast development, growth of pubic hair and menarche, the beginning of the menstrual cycle. At the turn of the 20th century, the average age for an American girl to get her period was 16 to 17. Today, that number has plummeted to less than 13, according to data from the National Health and Nutrition Examination Survey. The trend has been attributed to the epidemic of overweight children and a greater exposure to pollution, which does bad things to developing bodies and accelerates the timing of a girl’s first menstruation.


Environmental toxins also cause many girls to develop breasts at an earlier age than in the past. Compared with 20 years ago, American girls today begin developing breasts anywhere from one month to four months earlier, a significant difference. At the same time, the number of girls who begin to develop early is increasing. "Just a generation ago, less than five percent of girls started puberty before the age of 8; today, that percentage has more than doubled," noted Dr. Louise Greenspan and Dr. Julianna Deardorff in The New Puberty: How to Navigate Early Development in Today’s Girls. […]


Disponível em: www.newsweek.com. Acesso em: 13 mar. 2015.


A puberdade está chegando cada vez mais cedo para as meninas. De acordo com o texto, o desenvolvimento precoce dos seios é causado devido




Resposta : B) toxinas ambientais

Answer 1

O desenvolvimento do seios de modo precoce está intimamente relacionado à exposição de toxinas ambientais, como mostra o trecho "Environmental toxins also cause many girls to develop breasts...".

De acordo com o texto, diversos fatores podem estar relacionados com o desenvolvimentos dos seios (breast development) e o começo do ciclo menstrual (menarche), tais como a maior taxa de sobrepeso em crianças e a exposição à poluição, que podem influenciar no metabolismo do corpo de jovens. O texto traz a surpreendente informação de que a uma geração atrás somente 5 % das meninas iniciaram a puberdade antes dos oito anos de idade, sendo que agora esse percentual praticamente dobrou.

Answer 2

Resposta:

B) toxinas ambientais

Explicação: