The likely causes of precocious puberty -
- A) exposure to pollutants
- B) exposure to phthalates
- D) unhealthy weight gain
- E) disruptions to the endocrine system
In the text, it is given that -
- The onset of puberty has been occurring earlier and earlier. It is shown that about 10 percent of children ages 6 or 7 begin developing signs of puberty.
- This early puberty is known as precocious puberty.
- In the early 1900s, girls typically began menstruating at age 17. Nowadays it begins around age 12.
- This trend has been attributed to the growing number of overweight children and greater exposure to pollutants.
- Exposure to phthalates, artificial chemicals found in plastics, has also been cited as a cause.
- These chemicals disrupt the endocrine system by mimicking hormones in the body.
Thus, the correct causes are:
- A) exposure to pollutants
- B) exposure to phthalates
- D) unhealthy weight gain
- E) disruptions to the endocrine system
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