Three Metastasis Myths, Debunked | Melanoma Dispatch |

Persistent rumors claim that a needle biopsy – a procedure in which a surgeon removes a small part of a suspected tumor using a needle – can cause cancer to spread. However, there is no evidence that this is the case. On the contrary, biopsies often allow early diagnosis and timely treatment of cancers. Likewise, there is no evidence that massage promotes cancer spread. Indeed, massage therapy for cancer patients can reduce pain, muscle tension, mental stress, and nausea. Cancer spread is driven by biological changes inside the cancer cells, not outside mechanical forces like a biopsy needle or a massage. Finally, sugar does not “feed” cancer. Excess sugar consumption can contribute to obesity, which is associated with increased risk of several cancers, but by itself, sugar does not have any effect on cancer spread.