Premature thelarche and environmental pollutants

Area of Science:

• Endocrinology
• Environmental Health
• Pediatrics

Background:

• Premature thelarche is generally viewed as a benign condition with no impact on growth or puberty.
• Its endogenous origin is widely accepted, but exogenous oestrogenic pollutants are increasingly considered potential contributors.
• Environmental chemicals disrupting the endocrine system, known as endocrine disrupters, affect humans and animals.

Purpose of the Study:

• To highlight the significance of exposure to environmental oestrogenic pollutants as a potential cause of premature thelarche.
• To review the limited existing research on exogenous oestrogenic substances in premature thelarche.
• To emphasize the need for further investigation into environmental factors influencing this condition.

Main Methods:

• Review of existing environmental and epidemiological studies.
• Analysis of the role of oestrogenic and oestrogen-like substances in premature thelarche.
• Consideration of challenges in determining the specific role of individual substances due to complex biological mechanisms.

Main Results:

• Environmental pollutants, including oestrogens and oestrogen-like compounds from various sources, are present globally.
• Few studies have investigated the influence of exogenous oestrogenic substances on premature thelarche.
• The exact role of specific pollutants is difficult to ascertain due to multiple contributing factors and uncertain baseline oestradiol levels in children.

Conclusions:

• Exposure to oestrogenic environmental pollutants should be considered a potential cause of premature thelarche.
• Even low doses of exogenous steroid hormones can have significant biological effects in prepubertal children.
• Further research is crucial to elucidate the relationship between environmental oestrogens and premature thelarche.