The article said the breast sizes of Americans were larger than others' regardless of fitness and weight, i.e. slender American women still have larger breast size. Pregnant and lactating women, and women with surgical breast enhancement were excluded from the survey.
Sorry to interrupt the general jollity here, but I'm concerned that there are no reasons given for this deviation. Since breast tissue is hormone-sensitive, however, I wonder if it could be a result of exposure to hormonal contraceptives causing breast overgrowth, and/or exposure to environmental endocrine disruptors.
A large variety of things can cause gynecomastia (breast development) in men. I suppose they can affect women, too:
- Certain liver disorders
- Certain drug therapies (including some anabolic steroids antibiotics, heart medicines, anti-anxiety drugs, tricyclic antidepressants, chemotherapy)
- Herbal products (such as lavender oils and tea tree oils in skin products)
