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Gholami M, Ziaei S, Kazemnejad A, Movahedinejad M. The Relationship between Macronutrient Intake and Insulin Resistance in Polycystic Ovary Syndrome. JNFS 2023; 8 (2) :202-211
URL: http://jnfs.ssu.ac.ir/article-1-532-en.html
Department of Reproductive Health and Midwifery, Faculty of Medical Sciences, Tehran Tarbiat Modares University, Tehran, Iran
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The Relationship between Macronutrient Intake and Insulin Resistance in Polycystic Ovary Syndrome

Mahboobe Gholami; PhD1, Saeideh Ziaei; MD2, Anoshirvan Kazemnejad; PhD3 &
Maryam Movahedinejad; MSc*2

1 Department of Midwifery, School of Nursing and Midwifery, Neyshabur University of Medical Sciences, Neyshabur, Iran; 2 Department of Reproductive Health and Midwifery, Faculty of Medical Sciences, Tehran Tarbiat Modares University, Tehran, Iran; 3 Department of Biostatistics, Faculty of Medical Sciences, Tehran Tarbiat Modares University, Tehran, Iran; 4 Department of Midwifery, Faculty of Medical Sciences, Tehran Tarbiat Modares University, Tehran, Iran.
ARTICLE INFO ABSTRACT
ORIGINAL ARTICLE
Background: Polycystic ovary syndrome (PCOS) is the most common endocrine disorder in women of reproductive age. It is linked to genetic and environmental factors such as nutrition. Insulin resistance (IR) is one of the major pathological changes in PCOS. This study aimed to determine the relationship between IR and macronutrient intake in PCOS subgroups. Methods: This case-control study was performed on 151 women with PCOS and were divided into four groups according to the Rotterdam diagnostic criteria: A=41, B=33, C=40, and D=37, and 31 women were also in the control group and did not have this syndrome. All macronutrients were assessed with a 168-item food frequency questionnaire (FFQ). Results: There was a significant relationship between HOMA-IR and some dietary components
 (Increased calorie in group A, increased total fat intake in group C, lower intake of unsaturated fats (PUFA and MUFA) in group D and higher intake of saturated fat (SFA) and protein intake in the control group). There was no correlation in subgroup B (ovulatory phenotype). Conclusion: Due to the significant relationship between IR and some dietary components in PCOS subtypes, it is recommended to maintain a balance in carbohydrate and fatty acids intake, and increase dietary fiber to improve health parameters in PCOS subjects.


Keywords: Macronutrient; PCOS; Insulin resistance
Article history:
Received: 5 Oct 2021
Revised: 9 Jan 2022
Accepted: 15 Feb 2022
*Corresponding author
maryam.movahedinezhad@
modares.ac.ir
Department of Midwifery, Faculty of Medical Sciences, Tehran Tarbiat Modares University, Tehran, Iran.

Postal code: 14115-111
Tel: +98 915 9516438

Introduction
Polycystic ovary syndrome (PCOS) is the most common endocrine disorder in women (Legro et al., 2013). One of the most commonly used definitions for PCOS is the presence of at least two of the three clinical-biochemical criteria of Rotterdam. The symptoms include hyperandrogenemia, oligomenorrhea or ovulation, and macroscopic ultrasound evidence that the size of the ovaries in these women is 2 to 5 times the normal range and the ovaries contain numerous cysts that are typically less than one centimeter in diameter (Azziz et al., 2005, ESHRE and ASRM-Sponsored PCOS Consensus Workshop Group, 2004). The syndrome may occur with some or all of the symptoms, menstrual disorders, infertility, hirsutism, acne, and alopecia (Aali and Naderi, 2004).
The prevalence of PCOS due to different clinical features and biochemical characteristics of these patients has been reported differently in several studies according to race, ethnicity, and study population (Kauffman et al., 2002). In a study by Gabrielli et al. in Brazil, the prevalence of PCOS was estimated to be 32% among 859 women between the ages of 18 and 45 years (Gabrielli and Aquino, 2012). In a study by Ramazan et al. in Iran, its prevalence was estimated at 14.6% according to the Rotterdam criteria (Ramezani et al., 2011).
This syndrome is associated with a wide range of reproductive, metabolic, and psychological disorders (Moran et al., 2013). In 2004, the cost of treatment in the US health care system was estimated to be approximately $ 4 billion; 40% of which was for women with insulin resistance (IR) PCOS and type 2 diabetic women, and its management, especially in people with IR PCOS, is very important (Conway et al., 2014).
The most well-known cause of the pathogenesis of PCOS is IR (Berek, 2012) . IR is a central pathogenic factor that occurs during the development of hyperinsulinemia and is a cardiometabolic disorder stimulating all tissues and increasing the abnormality in the process of ovarian steroidogenesis. Therefore, IR in patients with polycystic ovaries  compared to healthy women may increase the risk of diabetes mellitus, dyslipidemia, atherosclerosis, and cardiovascular disease (Hernández-Valencia et al., 2010, Zangeneh et al., 2017).
Its pathophysiology is not fully understood, although several hypotheses have been proposed,  malformations in four endocrine active components including the ovary, renal gland, hypothalamic-pituitary axis, and insulin-sensitive tissues such as the insulin (Abu-Wasel et al., 2013). Both lean and obese women with PCOS are susceptible to IR, but obese women are more susceptible (Ehsani et al., 2015). Obesity can act as a gonadotropin due to IR, impaired synthesis of androgens or adipocytokines, and direct or indirect effects on adipose tissue. It can also affect the peripheral metabolism of steroids (Blüher, 2013). Therefore, changes in lifestyle and weight loss through exercise and nutrition are recommended for these patients (Conway et al., 2014).
In the study of Thomson et al., weight loss of 9 kg over 20 weeks in overweight and obese individuals with PCOS led to a significant decrease in fasting insulin, IR-HOMA, testosterone, free androgen specificity (FAI), increased sex hormone-binding globulin (SHBG), and improved fertility (FAI = Total Testosterone (TT) (nmol/l)/SHBG (nmol/l) * 100) (Thomson et al., 2009).
In nutrition science, macronutrients are divided into three broad categories, including protein, carbohydrate, and fat. The major role of macronutrients is to provide energy in calorie units (Williams, 1995). Some studies have shown that protein, carbohydrate, and fat intake can exacerbate IR (Kasim-Karakas et al., 2004, Panagiotakos et al., 2005, Pehlivanov and Orbetzova, 2007, Zivkovic et al., 2007). Some studies also reported that high protein, high carbohydrate, and fat-rich diets reduced IR or had no effect on IR (Sjaarda et al., 2015, Stender and Dyerberg, 2004, XIA and ZHANG, 2012, Zhang et al., 2015).
Since nutritional behaviors play a major role in human health or disease, it is important to examine the relationship between nutrition and PCOS. On the other hand, due to the inconsistencies in previous studies, this study aims to determine the relationship between IR and macronutrient intake in four subgroups of the PCOS phenotype based on Rotterdam criteria.
Materials and Methods
Design and participants: The present case-control study investigated dietary intake of macronutrients in four subgroups of PCOS and a control group with IR in Tehran during 2015-2016. The sample size based on the results of the pilot study and the correlation between the IR index and dietary component showed that the minimum correlation between these indices was 0.50. Therefore, with 95% confidence and 80% test power, the number of samples required based on the following formula for each subgroup with approximately 27 samples was 26.2. Taking into account a drop-out rate of 20%, the final volume per phenotype was estimated at 31 individuals.
The samples were referrals to the gynecology ward, endocrinology ward of Arash Hospital, and private clinic using a convenience sampling method if they were eligible to enter the study after filling informed consent form.
The inclusion criteria in the case group were Iranian race and age of 18-40 years. The exclusion criteria were chronic metabolic and non-metabolic diseases affecting diet such as diabetes mellitus, hyperthyroidism, hypothyroidism, and hyperlipidemia, taking medicines that affect appetite and diets, specific diet, pregnancy, and hormone use for three months before starting the study. The criteria in the control group were age of 18-40 years and without any diagnostic criteria for PCOS (non-hirsute: without excessive hair growth, with regular ovulation cycles), and those who referred to women's clinic for other reasons. Then the two groups were matched for education, body mass index (BMI), economic status, and physical activity and exercise status.
Initially, the disease was diagnosed after excluding other abnormalities that mimic the PCOS phenotype )ovarian or adrenal neoplasm, Cushing's syndrome, hyperprolactinemia, thyroid disease and congenital adrenal hyperplasia starting in adulthood by assessing 17-Hydroxyprogesterone (17-OHP), dehydroepiandrosterone sulfate (DHEAS), cortisol, thyroid hormones, and prolactin levels (Berek, 2012) .
Then based on the Rotterdam diagnostic criteria, two of the following three disorders are necessary:
1- Clinical hyperandrogenism (Hirsutism or H). Clinical hyperandrogenism: The Ferriman-Gallwey score of  8 (Tehrani et al., 2014), and above or biochemical hyperandrogenism: elevated serum TT levels or free androgen index (FAI): hyperandrogenic TT, greater than 0.68 ng/ml and FAI more than 5.36% (Hashemi et al., 2014). TT and sex hormone-binding globulin (SHBG) assay methods were measured by electro quantitative luminescence using a Roche German kit by Cobas E411. FAI = TT (nmol/l)/SHBG (nmol / l) * 100 (Goodarzi et al., 2011).
2-Ovulation disorder (Oligo/anovulation or O).
The menstrual cycle of more than 35 days (oligomenorrhea) or more than 3 months (amenorrhea) (Schorge et al., 2008).
3-Polycystic ovary view in ultrasound (P)
An ovarian volume greater than 10 cubic centimeters in at least one ovary or observation of more than 5 to 8 multiple fine follicles (Schorge et al., 2008).
After entering the study, they were divided into the following four phenotypes:
1) Complete phenotype or A (H + P + O)
2) Ovulatory phenotype or B (H + P)
3) Normoandrogenic phenotype or C (P + O)
4)  Normosonography phenotype or D  (H + O) (Kar, 2013).
Finally, 182 participants were included in the study (31 people in the control group, 41 people in group A, 33 people in group B, 40 people in group C, and 37 people in group D).
Measurements: The researcher assessed physical activity by asking research units about whether or not they exercise. The groups became homogeneous in terms of physical activity (Kim et al., 2007). For all samples, the 168-item Food Frequency Questionnaire (FFQ) was completed. Validity and reliability have been evaluated by others (Asghari et al., 2012, Mirmiran et al., 2010). This questionnaire was used to obtain a person's usual diet during the past year. For analyze the nutritional information of the FFQ questionnaire, Excel-based software was used. Thus, by entering the amount of each food consumed items in the cell, the amount of nutrients was calculated.
Finally, the total amount of nutrients consumed by each individual was obtained from the sum of all the nutrients in each food item consumed (Hosseini-Esfahani et al., 2015).

Given the different daily calorie intakes of each individual, it is obvious that the ratio of each nutrient to the total daily calorie intakes and consequently the contribution of one nutrient to the total calorie intakes may also be different. Therefore, to make an accurate comparison between the information obtained from each individual with the other participants, after obtaining the daily caloric intake of each of these macronutrients, they were calibrated for energy adjusting. Finally, the whole analysis was performed on the energy-regulated data.
Anthropometric evaluations (height, weight, and BMI), ovarian sonography, hirsutism as a clinical symptom of hyperandrogenism, and hormonal tests were performed to determine serum androgens. Questions were raised about menstruation. Fat [total fat, saturated fatty acids (SFA), polyunsaturated fatty acid (PUFA), monounsaturated fatty acid (MUFA)], Calories, protein and fiber (total and soluble) were measured.
IR was assessed using the HOMA-IR index. The original HOMA-IR model was described in 1985 with a formula for approximate estimation by Mathew et al. (Matthews et al., 1985). The cut-off point for defining IR was considered based on the HOMA-IR > 2.5 (Wallace et al., 2004).
Five milliliters of venous blood for checking the fasting blood glucose and insulin levels was obtained from all research units in the laboratory in the fasting state. Glucose was measured by glucose oxidase assay and insulin was measured by immunoradiometric method. Beck Man's immunotech kit was used to check the cases, with an extra-test accuracy of 3.4% and an intra-test accuracy of 4.3%.
Ethical considerations: In this study, it has been tried to include all ethical considerations. The ethics code by the Ethics Committee is D52/5503.
Data analysis: SPSS software was used for data analysis and statistical tests. At first, the Kolmogorov-Smirnov test was used for data normality. Parametric tests (for normal data) and non-parametric tests (for non-normal data) were used to analyze the data. Kruskal Wallis test (for non-normal data) and one-way ANOVA test (for normal data) were used to compare the variables. The Spearman correlation test (because data were not normal) was used to investigate the relationship between quantitative variables. The Chi-square test was also used to investigate some underlying variables. P-value≤0.05 was considered the level of significance.
Results
The results showed (Table 1) that there were no significant differences between the four subgroups of PCOS women and the control group in terms of age (P=0.09), BMI (P=0.99), an education level (P=0.30), economic status (P=0.27), and physical activity status (P=0.87).
There was a significant difference in the index of insulin. The number of women with PCOS who also had IR was higher in phenotype A than in other groups (61%). In phenotype B, 51.5%, phenotype C, 37.5% and phenotype D, 48.6% had PCOS and IR at the same time. In the control group, although they had no symptoms of PCOS, two (6.5%) patients had the syndrome (Table 2).
Spearman test results showed that IR in different PCOS subgroups and control groups correlated with the oral intake frequency of macronutrients. In subgroup A, the HOMA-IR was significantly correlated with daily calorie intake (P=0.03). In subgroup B, there was no significant relationship between the HOMA-IR and any of the dietary components (P>0.05). In subgroup C, there was a significant positive relationship between HOMA-IR and total fat (P=0.03). In subgroup D, there was a significant negative relationship between the HOMA-IR with PUFA (P=0.01), MUFA (P=0.003), and SFA (P=0.004). In the control group, there was a significant positive correlation between HOMA-IR, SFA (P=0.04), and protein intake (P=0.01, Table 3).
Table 1. Comparison of demographic variables at baseline between groups.
Variables Phenotype A
N=41
Phenotype B
N=33
Phenotype C
N=40
Phenotype D
N=37
Control
N=31
P-value
Age (y) 28.07 ± 4.70 27.00 ± 5.44 29.70 ± 6.44 29.83 ± 5.93 28.07 ± 4.70 0.09a
Body mass index (kg/m2) 25.48 ± 5.23 25.06 ± 4.28 25.08 ± 3.93 24.98 ± 4.80 25.48 ± 5.23 0.99a
Educational status
  Under diploma 4 (9.8) 3 (9.1 ) 4 (10.0 ) 2 ( 5.4) 2 (6.5 ) 0.30b


  Diploma 9 (22.0) 5 ( 15.2) 10 (25.0 ) 15 (43.2 ) 14 (45.2 )
  Bachelor 19 (46.3) 16 (48.5 ) 20 ( 50.0) 16 ( 40.5) 10 (32.3 )
  Master’s degree and higher 9 (22.0) 9 (27.3 ) 6 (15.0 ) 4 (10.8 ) 5 (16.1 )
The economic situation
  Poor 16 (39.0 ) 23 ( 69.7) 23 (57.5 ) 21 ( 56.8) 17 ( 54.8) 0.27b

  Medium 16 (39.0 ) 5 ( 15.2) 11 ( 27.5) 7 ( 18.9) 7 ( 22.6)
  Good 9 (22.0 ) 5 ( 15.2) 6 (15.0 ) 9 ( 24.3) 7 ( 22.6)
Physical activity status
  Level 1 23 (56.1 ) 20 ( 60.6) 25 ( 62.5) 25 (67.6 ) 20 ( 67.6) 0.87b

  Level 2 6 (14.6 ) 6 ( 18.2) 7 (17.5 ) 5 (13.5 ) 5 (13.5 )
  Level 3 12 ( 29.3) 7 (21.2 ) 8 ( 20.0) 7 ( 18.9) 6 ( 18.9)
a: Kruskal Wallis test; b: Chi-square test; Level 1: Normal daily activities without exercise. Level 2: Moderate physical activity: (1 to 2 times a week, each time for at least 20 minutes). Level 3: High physical activity: (3 or more 3 times a week, Each time for at least 20 minutes).
 
Table 2. Comparison of insulin resistance status in PCOS subgroups and control group.
Insulin resistance statusa Phenotype A Phenotype B Phenotype C Phenotype D Control group
n % n % n % n % n %
NO 16 39.5 16 48.5 25 62.5 19 51.4 29 93.5
Yes 25 61.0 17 51.5 15 37.5 18 48.6 2 6.5
Total 41 100 33 100 40 100 37 100 31 100
a: Yes is HOMA-IR >2.5 and No is less than 2.5; P<0.001 Chi-square test.
Table 3. Correlation between dietary components and HOMA IR index in four subgroups of PCOS and control group
Phenotype A
Calories Total fiber Soluble fiber Total fat PUFA MUFA SFA Protein
0.334a -0.188 -0.139 0.195 0181 -0.151 0.010 0.017
0.033b 0.240 0.385 0.227 0.264 0.352 0.952 0.916
Phenotype B
0.019 0.309 0.288 -0.173 0.094 -0.069 -0.051 -0.037
0.915 0.080 0.104 0.337 0.604 0.705 0.776 0.836
Phenotype C
0.074 0.036 -0.035 0.341 0.226 0.256 0.053 -0.063
0.649 0.824 0.830 0.031 0.161 0.110 0.747 0.697
Phenotype D
-0.028 -0.288 -0.132 0.124 -0.404 -0.473 0.062 -0.311
0.033 0.240 0.385 0.227 0.013 0.003 0.004 0.061
Control group
0.139 0.247 0.522 0.202 0.482 0.512 0.366 0.443
0.455 0181 0.066 0.275 0.067 0.052 0.043 0.012
a: Correlation coefficient; b: P-value; PUFA: Polyunsaturated fatty acid; MUFA: Monounsaturated fatty acid; SFA: Saturated fatty acid
Discussion
Many studies have investigated and compared IR with nutritional factors, but so far no study has investigated the association between IR and macronutrient intake in four phenotypes of women with PCOS. Due to differences in dietary patterns in different countries, this study investigates the relationship between IR and nutritional patterns in the consumption of macronutrients in Iran. In the present study, macronutrients were evaluated in three broad categories including protein, carbohydrate, and fat with HOMA-IR. The results showed that IR in different PCOS subgroups and the control group correlated with oral intake frequency of macronutrients.
In subgroup A, the HOMA-IR was correlated with daily calorie intake. In subgroup B, there was no relationship between the HOMA-IR and any of the dietary components. In subgroup C, there was a positive relationship between HOMA-IR and total fat. In subgroup D, there was a negative relationship between the HOMA-IR with PUFA, and MUFA. In the control group, there was a positive correlation between HOMA-IR, SFA, and protein intake.
So far, no study has been found on the intake of macronutrients individually in insulin-resistant PCOS phenotypes. Therefore, the present study compared the results of studies evaluating the association between different dietary components and IR in these patients. Graff reported a correlation between dietary glycemic index and IR in people with the classic PCOS phenotype (phenotypes A and B) (Graff et al., 2013). In Pehlivanov's study, people with PCOS in subgroups A and B received more calories and had a higher HOMA-IR index (Pehlivanov and Orbetzova, 2007), and these two studies were in line with the present study.
A case-control study was conducted by Zhang in China on 169 PCOS women and 338 control and non-PCOS women who were homogeneous in age. The results showed that women with PCOS had lower carbohydrate and calorie intake than controls (Zhang et al., 2015), which was contrary to the results of the present study due to differences in culture, nutrition, and taste between different races. Douglas studied 30 women with PCOS and 27 healthy women who were matched for age, race, and BMI and reported that people with PCOS tend to consume high glycemic index foods, but there was no significant positive association between food and IR (Douglas et al., 2006). The difference in the results of this study may be due to the lower sample size than the present study.
Sjaarda et al. also conducted a study on 259 women with PCOS and reported that there was no association between a high carbohydrate diet and high calorie intake or any macronutrients with IR (Sjaarda et al., 2015), which was due to the type of research examples. The study was performed on 259 women without a history of infertility and PCOS. The only examples in this study were women with amenorrhea. The results of this study are contrary to the results of the present study. Ebbeling et al. considered the type of carbohydrate intake more important than its total amount to maintain the metabolic health of women with PCOS. Low glycemic diets improved IR (Ebbeling et al., 2005). Brynes et al. also showed that high glycemic foods had the opposite effect (Brynes et al., 2003).
IR is the physiological condition during which the insulin hormone is less able to lower blood sugar. The subsequent rise in blood sugar can be so high that it goes beyond the normal range of blood sugar and can be detrimental to health. Some cells, such as fat and muscle cells, require insulin to enter glucose. If these cells do not respond to the circulating insulin, their blood sugar will rise. IR has several effects, including a decrease in the ability of adipocytes to harvest blood lipids and increased hydrolysis of peripheral triglycerides.
This hydrolysis can increase the free fatty acids in the bloodstream. Since the human genotype has not changed over the centuries, environmental factors have been considered a major contributor to the increase in IR in recent years. One of the most important issues in this regard is the energy balance between the number of calories consumed through food and the number of calories consumed during physical activity. In addition to energy balance, the type of food consumed is also important. From an evolutionary perspective, it has been suggested that being overweight and other related diseases are the natural results of high-calorie intake (Homayounfar et al., 2013). Being Overweight (as IR) can act as a gonadotropin and thereby impair the synthesis of androgens. Overweight can also affect the hypothalamus and ovaries through adipocytokines, indirectly or indirectly, and ultimately affect the peripheral metabolism of steroids. Therefore, as the first line of treatment for women with PCOS, the amount of calorie intake and weight management should be considered  (Ehsani et al., 2015). High-calorie intake was associated with IR in patients with complete PCOS phenotype (lack of ovulation, hirsutism, and abnormality in the ultrasound view).
Kasim-Karakas examined the effects of dietary PUFA in 17 patients with PCOS, which is consistent with the results of the present study. During a 3-month diet period, dietary fats were replaced with PUFAs, which reported that PUFAs significantly increased diol 3-glucuronide progeny, thereby reducing IR and ovulation  (Kasim-Karakas et al., 2004). Zivkovic reported that diets containing MUFA  in women with PCOS decrease IR (Zivkovic et al., 2007). In a study by McLaughlin, diets containing MUFA and PUFA lipids reduced IR in patients with PCOS (McLaughlin et al., 2016). In the present study, in subgroup D, an inverse relationship was observed between daily intake of PUFA and MUFA with HOMA-IR.
 Tierney stated that diets rich in MUFA increased IR (Tierney and Roche, 2007), which is not consistent with the present study. In the study by XIA, there was a positive correlation between saturated fat intake and HOMA-IR in women with PCOS. This study was in line with the present study (XIA and ZHANG, 2012). Stender conducted a study to determine the effect of trans-fatty acids on health. Their results showed that high-fat diets, especially saturated fats and trans-fatty acids, were associated with decreased IR. The results of this study were contrary to the results of the present study. In the current study, an increase in saturated fat intake in subgroups D and control was associated with increased IR (Stender and Dyerberg, 2004). Perhaps the reason for this contradiction, in the quality and quantity of fats is that diet composition plays an important role in homeostasis and insulin sensitivity in animals and humans. Some studies have shown that high-fat diets can cause hyperglycemia and IR. Fatty acids with varying degrees of saturation may not be able to induce fat-induced IR. It seems that the combination of fatty acids or types of fatty may have an independent effect on insulin function and alter insulin sensitivity (Saidpour et al., 2011).  In the present study, total fat increased in subgroup C and subgroups D, decreased MUFA and PUFA consumption, and increased SFA led to increased IR. In the control group, increased SFA intake and increased protein led to increased IR.
Another finding of the present study was the effect of macronutrients such as protein on IR. High protein intake increased IR that consistent with the study of Panagiotakos, which had a positive correlation between protein intake and IR  (Panagiotakos et al., 2005). One of the studies that are inconsistent with the present study is the XIA study, which was conducted to compare diet composition in women with and without PCOS. Eighty-six women (47 with PCOS and 39 without PCOS) participated in this study. The results showed a negative correlation between protein intake and HOMA-IR (XIA and ZHANG, 2012).
The limitations of this study include the lack of cooperation of many physicians in requesting appropriate tests. On the other hand, some research units did not perform the requested tests.
Conclusion
In the present study, considering the relationship between some dietary components and IR, it is important to study the dietary pattern and its modification in the management of people with PCOS. Even in the control group (without clinical or laboratory evidence of a diagnosis of PCOS), some nutritional factors (more SFA saturated fat intake and high protein intake) were associated with IR. Therefore, modifying the dietary pattern can improve the status of PCOS and prevent the potential risks of IR in different PCOS subtypes. In general, the results of this study suggest that balance carbohydrate and fatty acids intake and dietary fiber intake improve health parameters in PCOS patients.
Acknowledgements
In this regard, we thank the Vice-Chancellor for Research in Tarbiat Modarres University of Medical Science, Tehran, Iran, and the Ethics Committee (letter number D52/5503). It should be noted that the respected personnel of the women's ward of Arash Hospital in Tehran is thanked for their cooperation in the research.
Authors' contributions
Gholami M: Manuscript writing and idea generation. Ziaei S: performed research plan, and supervised the study. Kazemnejad A: analyzed the data. Movahedinejad M: designed the research and had primary responsibility for final content.
Conflicts of interest
 There is no conflict of interest.
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Kim HM, Park J, Ryu SY & Kim J 2007. The effect of menopause on the metabolic syndrome among Korean women: the Korean National Health and Nutrition Examination Survey, 2001. Diabetes care. 30 (3): 701-706.
Legro RS, et al. 2013. Diagnosis and treatment of polycystic ovary syndrome: an Endocrine Society clinical practice guideline. Journal of clinical endocrinology & metabolism. 98 (12): 4565-4592.
Matthews D, et al. 1985. Homeostasis model assessment: insulin resistance and β-cell function from fasting plasma glucose and insulin concentrations in man. Diabetologia. 28 (7): 412-419.
McLaughlin T, et al. 2016. Adipose cell size and regional fat deposition as predictors of metabolic response to overfeeding in insulin-resistant and insulin-sensitive humans. Diabetes. 65 (5): 1245-1254.
Mirmiran P, Esfahani FH, Mehrabi Y, Hedayati M & Azizi F 2010. Reliability and relative validity of an FFQ for nutrients in the Tehran lipid and glucose study. Public health nutrition. 13 (5): 654-662.
Moran L, et al. 2013. The contribution of diet, physical activity and sedentary behaviour
to body mass index in women with and without polycystic ovary syndrome. Human reproduction. 28 (8): 2276-2283.

Panagiotakos DB, et al. 2005. The relationship between dietary habits, blood glucose and insulin levels among people without cardiovascular disease and type 2 diabetes; the ATTICA study. Review of diabetic studies. 2 (4): 208.
Pehlivanov B & Orbetzova M 2007. Characteristics of different phenotypes of polycystic ovary syndrome in a Bulgarian population. Gynecological endocrinology. 23 (10): 604-609.
Ramezani F, Rashidi H & Azizi F 2011. The prevalence of idiopathic hirsutism and polycystic ovary syndrome in the Tehran Lipid and Glucose Study. Reproductive biology and endocrinology. 9: 144.
Saidpour A, et al. 2011. Effects of high-fat diets based on butter or soybean, olive or fish oil on insulin resistance and plasma desacyl-ghrelin in rats. Iranian journal of nutrition sciences & food technology. 6 (3): 39-48.
Schorge J, et al. 2008. Williams gynecology. McGraw-Hill Medical New York.
Sjaarda LA, et al. 2015. Dietary carbohydrate intake does not impact insulin resistance or androgens in healthy, eumenorrheic women. Journal of clinical endocrinology & metabolism. 100 (8): 2979-2986.
Stender S & Dyerberg J 2004. Influence of trans fatty acids on health. Annals of nutrition and metabolism. 48 (2): 61-66.
Tehrani F, Rashidi H, Khomami M, Tohidi M & Azizi F 2014. The prevalence of metabolic disorders in various phenotypes of polycystic ovary syndrome: a community based study in Southwest of Iran. Reproductive biology and endocrinology. 12 (1): 1-6.
Thomson R, et al. 2009. The effect of weight loss on anti-Müllerian hormone levels in overweight and obese women with polycystic ovary syndrome and reproductive impairment. Human reproduction. 24 (8): 1976-1981.
Tierney AC & Roche HM 2007. The potential role of olive oil‐derived MUFA in insulin sensitivity. Molecular nutrition & food research. 51 (10): 1235-1248.
Wallace T, Levy J & Matthews D 2004. Use and abuse of HOMA modeling. Diabetes care. 27(6): 1487-1495.
Williams C 1995. Macronutrients and performance. Journal of sports sciences. 13 (51): s1-s10.
XIA HX & ZHANG W 2012. Study of Association between Polycystic Ovary Syndrome and Dietary Intake. Journal of reproduction & contraception. 23 (1): 29-40.
Zangeneh F, Naghizadeh M, Bagheri M & Jafarabadi M 2017. Are CRH & NGF as psychoneuroimmune regulators in women with polycystic ovary syndrome? Gynecological endocrinology. 33 (3): 227-233.
Zhang J, et al. 2015. High intake of energy and fat in Southwest Chinese women with PCOS: a population-based case-control study. PloS one. 10 (5): e0127094.
Zivkovic AM, German JB & Sanyal AJ 2007. Comparative review of diets for the metabolic syndrome: implications for nonalcoholic fatty liver disease. American journal of clinical nutrition. 86 (2): 285-300.


 
Type of article: orginal article | Subject: public specific
Received: 2021/12/5 | Published: 2023/05/20 | ePublished: 2023/05/20

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27. Mirmiran P, Esfahani FH, Mehrabi Y, Hedayati M & Azizi F 2010. Reliability and relative validity of an FFQ for nutrients in the Tehran lipid and glucose study. Public health nutrition. 13 (5): 654-662.
28. Moran L, et al. 2013. The contribution of diet, physical activity and sedentary behaviour to body mass index in women with and without polycystic ovary syndrome. Human reproduction. 28 (8): 2276-2283.
30. Panagiotakos DB, et al. 2005. The relationship between dietary habits, blood glucose and insulin levels among people without cardiovascular disease and type 2 diabetes; the ATTICA study. Review of diabetic studies. 2 (4): 208.
31. Pehlivanov B & Orbetzova M 2007. Characteristics of different phenotypes of polycystic ovary syndrome in a Bulgarian population. Gynecological endocrinology. 23 (10): 604-609.
32. Ramezani F, Rashidi H & Azizi F 2011. The prevalence of idiopathic hirsutism and polycystic ovary syndrome in the Tehran Lipid and Glucose Study. Reproductive biology and endocrinology. 9: 144.
33. Saidpour A, et al. 2011. Effects of high-fat diets based on butter or soybean, olive or fish oil on insulin resistance and plasma desacyl-ghrelin in rats. Iranian journal of nutrition sciences & food technology. 6 (3): 39-48.
34. Schorge J, et al. 2008. Williams gynecology. McGraw-Hill Medical New York.
35. Sjaarda LA, et al. 2015. Dietary carbohydrate intake does not impact insulin resistance or androgens in healthy, eumenorrheic women. Journal of clinical endocrinology & metabolism. 100 (8): 2979-2986.
36. Stender S & Dyerberg J 2004. Influence of trans fatty acids on health. Annals of nutrition and metabolism. 48 (2): 61-66.
37. Tehrani F, Rashidi H, Khomami M, Tohidi M & Azizi F 2014. The prevalence of metabolic disorders in various phenotypes of polycystic ovary syndrome: a community based study in Southwest of Iran. Reproductive biology and endocrinology. 12 (1): 1-6.
38. Thomson R, et al. 2009. The effect of weight loss on anti-Müllerian hormone levels in overweight and obese women with polycystic ovary syndrome and reproductive impairment. Human reproduction. 24 (8): 1976-1981.
39. Tierney AC & Roche HM 2007. The potential role of olive oil‐derived MUFA in insulin sensitivity. Molecular nutrition & food research. 51 (10): 1235-1248.
40. Wallace T, Levy J & Matthews D 2004. Use and abuse of HOMA modeling. Diabetes care. 27 (6): 1487-1495.
41. Williams C 1995. Macronutrients and performance. Journal of sports sciences. 13 (51): s1-s10.
42. XIA HX & ZHANG W 2012. Study of Association between Polycystic Ovary Syndrome and Dietary Intake. Journal of reproduction & contraception. 23 (1): 29-40.
43. Zangeneh F, Naghizadeh M, Bagheri M & Jafarabadi M 2017. Are CRH & NGF as psychoneuroimmune regulators in women with polycystic ovary syndrome? Gynecological endocrinology. 33 (3): 227-233.
44. Zhang J, et al. 2015. High intake of energy and fat in Southwest Chinese women with PCOS: a population-based case-control study. PloS one. 10 (5): e0127094.
45. Zivkovic AM, German JB & Sanyal AJ 2007. Comparative review of diets for the metabolic syndrome: implications for nonalcoholic fatty liver disease. American journal of clinical nutrition. 86 (2): 285-300.

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