Breast augmentation
The modern prosthetic breast was invented in 1961, by the American plastic surgeons Thomas Cronin and Frank Gerow, and manufactured by the Dow Corning Corporation; in due course, the first augmentation mammoplasty was performed in 1962. There are five generations of medical device technology for the breast-implant models filled with silicone gel; each generation of breast prosthesis is defined by common model-manufacturing techniques.
Breast ironing
A recent rise in the incidence of breast ironing has been attributed to the earlier onset of puberty, caused by dietary improvements in Cameroon over the last 50 years. Half of Cameroonian girls who develop under the age of nine have their breasts ironed, and 38% of those who develop before eleven. Additionally, since 1976, the percentage of women married by the age of 19 has decreased from nearly 50% to 20%, leading to an increasingly long gap between childhood and marriage. The later age of marriage may be due to changed social norms that allow girls and women to attend school through university and to hold jobs in the formal sector. Women who delay marriage in pursuit of education and career can procure the corresponding benefit of financial independence later in life, whereas girls who become pregnant are often forced to drop out of school and forgo formal employment.