i feel itching in my breast and its painful as well

It’s very much unlikely. If the opposite armpit develops swollen nodes, it could be anything from an ingrown hair to a skin disease, to a swollen lymph node caused by an infection or even an injury down your arm. Many of these conditions require further testing or treatment. It is important to see y....

Yes. It is important to get any lump in your breast checked by a doctor, even if it is not painful. Not all lumps are cancerous, but some could be cysts or benign growth but only a medical professional can determine what it is.

Yes, but indirectly. Free radicals can damage DNA but the cells have their own reparative mechanisms. For free radicals to cause cancer, the following events need to happen:- 1. Damage in individual cells significant enough to overwhelm its reparative mechanisms. 2. Damage in such a way that even ....