What problems can occur from heroin addiction?

Lots: Instant death from od, loss of family, friends. Legal problems, risky behavior to support habit. Loss of values. Incomprehensible demoralization. Hiv, hepatitis. No sex drive. Homelessness. Basically complete loss of mind, body and spirit. But no matter how bad it has gotten there is always hope and recovery and a new life if you are willing to work for it and ask for help.

Death: Heroin addicts risk death from overdose, which causes one to stop breathing. Other problems stem from sharing needles used intravenously. One can contract hepatitis c or hiv, as well as other diseases. Often, folks don't realize they expose themselves to contamination by sharing the water used for the injection; like a glass on a table which everyone sticks their needle to draw up water. Seek help.

Life altering: addiction is a life long disease, and the chemical changes in the brain which are associated with impulsivity, compulsion, craving etc. often will affect a person life. Exposure to STD is increased as also overdose and death to name a few. Your whole life changes, the drug controls you look for help if you are addicted.