Exta fat in your body can produce hormones and growth factors that effects the way our cells work. Overweith can cause several types of cancer like breast cancer, pencreas kidney bowel or womb. Fat cells in the body are active and produce hormones and proteins that are released into the bloodstream and carried around the body. Because they are spread through the circulation, these ‘chemical messengers’ can affect many parts of the body, and increase the risk of several different types of cancer.