Oncologist (cancer doctor) says triclosan is an ingredient found in Colgate and other everyday products linked to cancer, bone loss etc.
http://www.news4jax.com/news/toothpaste-chemical-cancer-link/27473626
I have just made some toothpaste using coconut oil, sodium bicarbonate, peppermint oil, hydrogen peroxide, cardamon, green tea extract and xylitol.