<br /> Singer Fergie is opening up on her past drug use.<br />In the early 2000s, Fergie became addicted to crystal meth.<br />The drugs eventually caused her to hallucinate.<br />I was [suffering from] chemically induced psychosis and dementia. I was hallucinating on a daily basis. Fergie<br />Despite her struggles, Fergie is looking at it from a positive perspective.<br />The drugs thing, it was a hell of a lot of fun… until it wasn’t... I thank the day it happened to me. Because that’s my strength, my faith, my hope for something better. <br />