Object of This study is investigate the effect of low calorie high fiber diet on some factors in obese or overweight hirsute women and Pco . This study is based on a not blind randomized clinical trial that perform on 50 hirsute women with this inclusion criteria ( Hirsutism or Pco confirmed by a physician; lack of food or certain medications; lack of gastrointestinal disease; hepatic, metabolic, cardiovascular, renal,…; women ages 18-45; not pregnant; not lactating; non-smoking; non-hormonal drugs in the past three months; patients treated with the same way). The population of eligible women is divided into two groups, A and B, each of which consists of 25 patients using Randomized block permutation. Women are well aware that they are divided randomly In an intervention or control group. The 24-hour dietary recall questionnaire and demographic information completed by researcher. 10 cc blood sample will be taken for the measurement of free testosterone , DHEA-S , SHBG, anderestendion ,17OHP, LH , FSH On days 3-5 of the menst ural period, Befor and one month after the completion of intervention .Time of the intervention is 3 month and The intervention including the use of high-fiber and low-calorie diet or a normal diet . During the intervention, the researcher follow the people by telephone or person visit And the results of study will be analyzed . Exclusion criteria: medical problems during the study; unwillingness to cooperate; pregnancy; Gastrointestinal problems when using a high-fiber diet