Proper nutrition and regular physical activity are important factors in achieving an improvement in the health and life quality of women diagnosed with insulin resistance (IR) and polycystic  ovary syndrome (PCOS). The objective of the survey study was to assess some selected behaviours, health disorders and dietary habits of adult women with IR and PCOS. In the survey  participated 60 women aged 18 – 35. The authors’ self-designed questionnaire and a 24-hour dietary recall questionnaire were made available electronically to women who were charges of the  Insulin Resistance Foundation – a healthy diet and a healthy life. The lists of foods eaten were qualitatively analysed with the use of a Diet 5.0 software. The results obtained were compared  with the recommendations by the Polish Diabetes Association and nutritional standards for the population of Poland. The nutritional status was diagnosed taking into account the WHO  standards. In the statistical analysis were applied fractions. Incorrect nutritional status concerned 6 out of 10 female patients. Nearly 9 out of 10 respondents had an insufficient energy supply in relation to total metabolic rate (f = 0.88). Half of the female patients ate a proper amount of protein, 4 of 10 women – a proper amount of fat, and 1 of 10 surveyed – a proper amount of  carbohydrates (f = 0.15). At the same time, in their diets, more than 3/4 of women did not include sufficient amounts of fluids (f = 0.83), nor dietary fibre (f = 0.87), nor calcium and iodine (f =  0.80). More than half of the surveyed took up physical activity (at least 2 – 3 times a week). More than half of the patients had comorbidities – mostly thyroid diseases (f = 0.35) and irritable  bowel syndrome (f = 0.17). Negative lifestyle patterns may exacerbate the obesity problem and increase the occurrence risk of metabolic syndrome. There is a need to educate women in order to  prevent the development of pathologies accompanying PCOS.