To date only one study evaluating the association between breast cancer and use a bra when sleeping. The result also mentioned the risk of breast cancer in women who slept with who do not use the bra was the same.
Maintain a healthy weight may help reduce the risk of breast cancer. due to overweight and obesity become one of the factors triggering breast cancer.
Women who are overweight usually have a large breast size and use a bra when sleeping. Meanwhile, thin woman who usually sleep without a bra. This difference is thought to nourish the myth of bra and breast cancer.