 [ Symptoms ] i have burning sensations on my chest and whole body had false diagnosis need second opinion [ Disease ] most helpful answer i do not believe there is any scientific evidence that working with infants will cause breast enlargement i hope not since i take care of our one year old grand daughter twice a week if this assumption was true would not women in the child care industry all over the world have experienced this and be clamoring for a job there is likely another explanation for your breast enlargement