In addition to causing nerve damage and brain, addicts must also bear the risks ofcocaine hidden. The risk of heart disease lurking silently without any symptoms of cocaine addicts. A new study finds that heart damage caused by heavy cocaine use can occur without showing any symptoms. In the study researchers assessed the heart health of 30 long-term cocaine users,average age 37 years, who entered drug rehabilitation programs 48 hours after the lastuse of cocaine. Study participants had used cocaine for an average of 12 years andconsumes about 5.5 grams of cocaine per day. Normal cardiac function at all cocaine users, but 12 of them have a local disorder, 83percent suffered structural damage and 47 percent experienced swelling (edema) in the lower left ventricle. Edema associated with the use of cocaine.