How Can A Meth Addiction Can Ruin A Person's Life? If a person is dealing with a meth addiction, then it is important for him or her to go to meth rehab as soon as possible. Meth abuse can result in both short and long-term damage. Short-term meth abuse can result in weight loss, increased aggressiveness, nausea and irritability. It is also important to note that serious side effects can result from short-term meth abuse. Serious short-term effects of meth abuse include anxiety, convulsions and confusion. In some cases, convulsions can lead to death. Long-term meth abuse can result in irreversible damage. Some of the long-term effects of meth abuse include memory loss, brain damage, liver damage, kidney damage and irregular heartbeat. An