(NBC NEWS) There’s another reason to keep an eye on your moles. Two new studies suggest that women with more moles may have a higher risk of breast cancer.

Moles are already linked with a higher risk of melanoma — the deadliest form of skin cancer. The two new studies cannot explain how moles might be related to breast cancer, but there’s a lot of research showing that moles, like breast cancer, can be influenced by hormone levels.

Moles are formed naturally by cells in the skin, and the vast majority of moles are completely harmless. But dermatologists say it’s a good idea for people to keep an eye on their moles, and report any changes such as sudden growth itching or bleeding.
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