What age would you say Michael Jackson started having mental health problems.?

if all is true about his upbringing and the physical and mental abuse he suffered as a child, then he would have started to have mental health difficulties from a young age. It would appear from reading articles about Michael Jackson, he didnt have a childhood, working with young people, who suffer such abuses i have often found them with low self esteem, no socialisation skills, loners, no self worth, to mention a few. Some resort to alcohol/substance/drug abuse to give them confidence or to forget the pain they are in or even make themselves feel better. Others even try self harm.People however are individuals and every case is different. He was a unique artist whose memory will live forever.