Currently, the recommended treatment for focal segmental glomerulosclerosis (FSGS) is based on the kidney biopsy and subtype of the disease. In most cases, the basic treatment is to use ACE-inhibitors or ARB agents to treat and control blood pressure. The goal for treatment is to keep blood pressure generally under 130/80. Treatment should also be directed at decreasing the amount of protein that you spill into your urine. Using statins to lower serum cholesterol is also recommended but you may not be able to take this medication if your have serious side effects from statins. I recommend that you eat a healthy diet and maintain a healthy body weight. I also recommend the low salt DASH diet. You can review the DASH diet at: https://www.nhlbi.nih.gov/health/health-topics/topics/dash
Other treatments can include immunosuppressive medications based on the subtype of the kidney biopsy. This would have to be discussed with your nephrologist. I suggest further consultation with your nephrologist.