According to the World Health Organization (WHO), stress appears in a person whose resources and personal management strategies are exceeded by the demands placed on him. It would contribute to weakening or disrupting the immune system, resulting in the appearance or exacerbation of certain diseases, such as cancers. The word cancer alone conveys fear and anxiety, and many scientists have shown that chronic stress tends to exacerbate the progression of cancers. In addition, new research highlights epinephrine (more commonly called adrenaline), a stress hormone, which would trigger a cascade of biochemical reactions favoring the growth of breast cancer. On the other hand, Swiss researchers have succeeded in deciphering the mysterious molecular mechanisms linking breast cancer and stress hormones; discover that synthetic derivatives of stress hormones, often used as anti-inflammatory therapy in the treatment of the disease, decreased the effectiveness of chemotherapy. A bit of hope fortunately, from the doctors of Miami’s University who attest that, stress management techniques would have beneficial effects in patients with breast cancer. These techniques would increase survival, according to the results of a study published in the November 2015 edition of the journal Breast Cancer Research and Treatment. Also, looking into the topic of "stress management in women with breast cancer" is proving to be an undertaking of capital interest, as it contributes, on the one hand, to preventing the negative impacts of prolonged stress on the affected subject and, on the other hand, to help her live with breast cancer without stress.

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