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美国的整形医生认为，与大众的观念相反，母乳喂养并不会导致产后乳房下垂。

整形专家称，越来越多的女性求诊于整形医生以矫正怀孕对体型导致的影响，常见的是产后导致的乳房下垂，人们通常认为这是因为哺乳婴儿所造成的。

但是，研究发现其它的因素如年龄偏大、肥胖和吸烟史等是某些女性产后出现乳房下垂的原因。

民间广泛流传母乳喂养会对乳房形态产生不好的影响，这也是妇女放弃母乳喂养的主要原因。但目前为止，尚没有客观的资料支持或否定这种观念。新的研究结果可以纠正错误的观念，让妇女解除顾虑做母乳喂养，使母婴都美丽、健康。

该研究发表于《美容外科杂志》上，结果显示，年龄偏大，体重超重、多孕多产、孕前乳房较大和吸烟史是发生乳房下垂的显著危险因素。

Breastfeeding not cause of sagging breasts

LEXINGTON, Ky., Oct. 24 (UPI) -- Breastfeeding, contrary to popular belief, is not a likely cause of post-pregnancy drooping of the breasts, U.S. plastic surgeons said.

Lead author Dr. Brian Rinker, a plastic surgeon in Lexington, Ky., said a growing number of women turn to plastic surgeons to counteract the effects of pregnancy on their bodies, with the common post-partum complaint of sagging breasts -- also known as breast ptosis -- which many believe to be linked to breastfeeding.

However, the study found other factors -- including older age, higher body mass index and a history of smoking -- are responsible for the breast sagging experienced by some women after pregnancy.

"It is widely assumed that breastfeeding will adversely affect the appearance of the breasts, and this has been a major reason cited by women who choose not to breastfeed," Rinker said in a statement. "However, there has been very little objective data to support or deny that this is, in fact, the case. With this study, we hope to shed some light on the subject and correct any misconceptions."

The study, published in Aesthetic Surgery Journal, showed that greater age, higher BMI, greater number of pregnancies, larger pre-pregnancy bra cup size and history of smoking were significant risk factors in the development of sagging breasts.