It's been a long running dilemma and there have been myriad studies and extensive research but recent research which is the largest study thus far, seems to bear out the fact that pregnant women who live in cities and urban areas are more likely to give birth to smaller babies than those who live in a healthier environment.

Cancer can originate in a number of different cell types. One such cell type is the B-cell. B-cells are one of five kinds of lymphocytes found in the body. As part of the immune system, their function is largely to create antibodies against antigens. If such antigens are foreign to the immune system, B-cells help activate our body's fight response.