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Study aim
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Determining the effect of modified diet on semen factors in men with idiopathic infertility
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Design
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A randomized, controlled, parallel-group, unblinded clinical trial on 66 patients. The codes of Random Allocation Software (RAS) were used for randomization.
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Settings and conduct
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Eligible patients referred to Mehr infertility treatment center (Rasht, Gilan) are randomly divided into two groups of 33: intervention and control. The food record questionnaire to measure and control macronutrients intake in the diet, and physical activity record to calculate the energy expenditure will be evaluated in beginning and every two weeks during the study. Ten milliliter fasting blood and semen samples after 2-3 days of sexual abstinence will be taken from all subjects at the beginning and end of the intervention.
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Participants/Inclusion and exclusion criteria
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Inclusion criteria: Oligoasthenoteratozoospermic men aged 20 to 45 years with semen volume > 1.5 ml, BMI equal to 18.5-30, normal testicular volume, normal karyotype and normal levels of FSH, LH and prolactin will be included in the study. And exclusion criteria: consumption of tobacco, alcohol and drugs in the last three months, Y-chromosome microdeletion, more than 25% DNA fragmentation rate, following any special diet during the last three months, taking multivitamin and mineral supplements during the last three months, the presence of uncontrolled inflammatory and chronic diseases such as diabetes, hypothyroidism, history of cancer or pelvic chemotherapy or radiotherapy, untreated varicocele, and prostatitis.
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Intervention groups
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The control group will be given a diet based on height and weight with the modification of the percentage of macronutrients, and for the intervention group, a diet for fertility improvement will be designed according to the individual's height and weight.
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Main outcome variables
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Semen analysis