Professional women are more susceptible to developing breast cancer, a new research has revealed. The study found that women in professional jobs had a nearly 70 percent higher risk of breast cancer than other women.

Factors responsible for the vulnerability is stress at work, including prejudice, discrimination, and resistance.

The research, which was based on a 55-year study of women who were in their thirties in the 1970's, shows that the longer a woman held the job, the greater will be the risk.

Dr Tetyana Pudrovska, who led the study, said that while women going into management in the 1970s were breaking new ground, the same kind of stress affects women today. The study focused on nearly 4,000 women who were all aged 36 in 1975.