...the researchers still caution people to take it with a grain of salt. The research does show that bra usage may be potentially harmful, but the research sample was 330 women, so generalizing to every woman across the world would be a bit of a stretch.
To conclude, the researchers believe that more research should be done on the harmful effects of bra usage since they believe their research to be "preliminary." It's also worth noting that not all women wear bras for breast support. Some women simply don't want people to see the exposed breast and nipple, so they use bras for a different reason than the study was focused on. Basically, hold off on torching those bras.