Are all moles that change cancerous? i've always had a lot of moles and i'm almost 35... some have changed. none are painful.

Well, since we can't: see your moles - rather than take chances would encourage you to see dermatologist for a head to toe check of your skin. That way - it can be determined if any of your moles appear suspicious or need to be biopsied. Take care.

Moles: Not all moles are cancerous. There is a possibility it may become cancerous. Have it checked periodically through a Dermatologist.