Diet was not thought of as an important adjunct in treatment of PCOS. But, many experts now believe that diet should be a part of the treatment plan. Lifestyle changes for PCOS include eating a healthy, balanced diet, exercising regularly. Try to lose weight – as little as 5% of total body weight has been shown to be beneficial. Taking into consideration glycemic index o different foods helps in achieving the desired weight and reversing the symptoms of PCOS.