In 1893, Marie Tucek made a “breast supporter” that looked like a modern brassiere. But a little later Mary Phelps Jacobs designed a better version and called it a brassiere. She patented it and sold the patent to a company named Warner Brothers Corset Company in Bridgeport, Connecticut for $1,500. It caught on. By the 1950s, teenage girls were urged to buy and use training bras to hold their breasts firmly in a desirable way and prevent sagging.
Bras and Breast Health Consequences
The connection between wearing bras and painful and bothersome non-malignant breast fibrocystic disease as well as malignant breast cancer was hardly mentioned until the book Dressed to Kill by researchers Sydney Ross Singer and Soma Grismaijer came out in 1995.
They surveyed 5,000 women and discovered that women who wore bras for 12 hours or more greatly increased breast cancer risk than women who wore bras less.
Dr. Gregory Heigh of Florida has discovered that over 90% of women with fibrocystic breast disease find improvement when they stop wearing their brassieres. There are case testimonies (source below) from breast fibrocystic disorders who realized this when they stopped or at less lessened brassiere use.