thalassemia is a genetic disease in which oxygen is not properly supplied to bodily organs due to an abnormal structure of the patient s hemoglobin ( 1 ) . the disease is seen in almost all human races , but it is more prevalent in the mediterranean and tropical regions as well as in asia and africa ( 1 , 2 ) . the annual incidence rate of symptomatic cases has been estimated to be 1 in 100,000 populations worldwide and 1 in 10,000 in european countries ( 3 ) . iran , with approximately 3 million minor thalassemic and 25 thousand major thalassemic patients , is located in the thalassemia belt ( 2 ) . repeated blood transfusions and iron absorption from the intestine may cause iron overload in these patients ( 4 ) . iron overload can , in turn , lead to increased levels of free radicals in the body . studies have indicated that the level of oxidative stress is significantly high in patients with transfusion - dependent thalassemia ( 5 - 7 ) ] , while the levels of antioxidants , such as vitamins e and c , are lower than the normal range ( 8 , 9 ) . excess iron is precipitated in the visceral organs , primarily the heart , liver , and endocrine glands ( 1 ) . despite the availability of iron - chelators , heart toxicity remains the leading cause of death in beta - thalassemia major patients due to iron overload ( 10 - 12 ) . the most common treatment method for the removal of excessive iron is chelation therapy ( 1 ) . desferal is a medicine in this category ; however , it has several side effects , such as excessive pain during injection ( 13 ) . the quality of its oral form is also challenging , and it is not applicable to all patients ( 14 ) . moreover , with the rising cost of desferal , a high economic burden is imposed on society s healthcare system . attempts to identify appropriate and cost - effective ways to reduce iron overload in patients with beta - thalassemia were among the researchers top concerns . nevertheless , few studies have been conducted in this area so far . in an investigation by schumacher et al . , iron depletion was reported in 10% of male and 20% of female athletes ( 15 ) . furthermore , some researchers assessed the effects of aerobic exercise and intercessory prayer on ferritin in patients with thalassemia ( 2 , 16 ) . other researchers , by determining the nutritional needs of these patients and suggesting the addition of specific complements to the treatment program , have tried to meet the nutritional needs of these patients and reduce tissue damage due to iron overload ( 17 ) . yet , only a limited number of studies have been conducted in this regard , particularly in iran . therefore , the present study aimed to investigate the effect of nutrition , exercise , and a prayer program on reducing iron overload in patients with beta - thalassemia major . this randomized clinical trial with pre / posttest design was performed on two groups of thalassemia patients ( intervention and control groups ) . this study was conducted in shahid dastgheib hospital affiliated with shiraz university of medical sciences , the largest center for thalassemia patients in shiraz . the inclusion criteria for the study were being between 15 and 35 years of age , having the ability to receive the training and take care of oneself , not being prohibited to exercise by a cardiologist , and not having participated in similar studies during the past six months . on the other hand , the exclusion criteria were a lack of cooperation during the study ( unwillingness , migration , or non - compliance with the program ) , hospitalization for any reason ( acute complications of the disease , cardiovascular disorders , and other problems ) , suffering from acute or chronic infectious diseases , and an urgent need to alter the chelation therapy due to an excessive increase or decrease in iron overload . based on similar studies ( 16 ) , a 30-subjects sample size was determined to be adequate for the study ( 15 patients in each group ) . however , considering the probability of loss , the sample size was increased to 50 subjects ( 25 in each group ) . among the 390 patients with thalassemia who had been referred to the hospital , 200 did not meet the inclusion criteria and 100 were not willing to participate in the study . therefore , 50 patients with major thalassemia were selected based on the inclusion criteria of the study ( figure 1 ) . these patients were randomly divided into an intervention and a control group . in this study , 12 patients were excluded due to hospitalization , unwillingness to continue participating in the study , and suffering from infectious diseases . thus , the number of patients in the intervention and control groups decreased from 25 each to 18 and 20 , respectively . the educational content was prepared based on various resources , articles , and specialists opinions . in the first session , the group members became familiar with each other , expressed their goals , and talked about their life experiences . the patients educational needs were also determined using a questionnaire . in the second session , the patients were provided with a brief description of the types of the disease , new treatment methods , and the dos and donts of eating . considering nutrition , the focus was on avoiding heme - iron - rich foods ( iron found in meat ) , substitution of the nutritional needs with non - heme - iron - rich foods ( iron found in non - meat materials ) , and the consumption of antioxidants , such as vitamins e and c ( box 1 ) . in the third session , exercise and physical activity within one s physical endurance were emphasized , and the principles and methods were explained . in addition , the patients were asked to do moderate exercises , such as walking , at home for 15 minutes every day and increase or decrease their duration and speed depending on their tolerance ( box 2 ) . in the fourth session , the importance of preventing infection , the association between infection , iron , and iron chelators as well as the prevention strategies was trained ( box 3 ) . it was reported that iron overload impaired the immune system and increased the risk of infection in thalassemia patients ( 18 ) . moreover many organisms , such as yersinia enterocolitica , klebsiella species , escherichia coli , streptococcus pneumoniae , pseudomonas aeroginosa , legionella pneumophila , and listeria monocytogenes , have been indicated to increase virulence in the presence of excessive iron ( 19 ) . in the fifth session , the nature , reason , and ways of praying were explained and the patients were asked to pray every day and fill their moments with god by attracting their heart and mind towards him . the spiritual training programs ( including intercessory prayer ) were carried out according to the participants religious beliefs ( all were muslim ) . it should be mentioned that the patients were required to repeat spiritual words and phrases at least three times a day . each training class lasted for 1 - 1.5 hours considering the patients understanding and tolerance levels . to ensure patient learning , they were involved in discussions and question - and - answer sessions after each training session . in addition , the participants were given a 15-page booklet entitled care program for major thalassemia patients , which contained the educational content of the training program after the intervention . a self - reporting performance record form was filled out daily by the patients to confirm their compliance with the educational program . they recorded no intake of red meat , fish , liver and kidney , the consumption of dairy products but only with meals , having fruits and vegetables as snacks , walking and its duration , performing infection strategies , and frequency of repetition of spiritual phrases . the researcher s contact number was also given to all the participants for any possible questions . the participants demographic characteristics consisted of age , gender , education level , time of diagnosis , number of transfusions , and medications used to reduce iron overload . additionally , the basic iron content included serum iron , ferritin , unsaturated iron - binding capacity ( uibc ) , and total iron - inding capacity ( tibc ) . the basic iron content was measured in a specialized laboratory . to ensure the reliability of the test results , all the experiments were carried out in a specialized laboratory by just one individual using specific kits ( electrochemi luminesence from roche germany ) to determine the amount of ferritin and then the colorimetric method to determine the iron and uibc at a given time . to prevent information transfer , the study was initially conducted in the control group , so that they could not get any information about the details of the intervention . it should be noted that the individual who took blood from the patients and the one who analyzed the tests were blind to the study groups . this study was registered in iranian registry of clinical trials of the ministry of health and medical education ( irct2014011216190n1 ) . the study was also approved by the ethics committee of shiraz university of medical sciences . written informed consent was obtained from all the participants . in this way they were also informed about the voluntary nature of the study and that their participation / non - participation had no effects on their treatments and care . the study data were analyzed using chi - square , fisher s exact test , mann - whitney , wilcoxon , independent samples t - test , and paired samples t - test with the the spss statistical software ( ver . this randomized clinical trial with pre / posttest design was performed on two groups of thalassemia patients ( intervention and control groups ) . this study was conducted in shahid dastgheib hospital affiliated with shiraz university of medical sciences , the largest center for thalassemia patients in shiraz . the inclusion criteria for the study were being between 15 and 35 years of age , having the ability to receive the training and take care of oneself , not being prohibited to exercise by a cardiologist , and not having participated in similar studies during the past six months . on the other hand , the exclusion criteria were a lack of cooperation during the study ( unwillingness , migration , or non - compliance with the program ) , hospitalization for any reason ( acute complications of the disease , cardiovascular disorders , and other problems ) , suffering from acute or chronic infectious diseases , and an urgent need to alter the chelation therapy due to an excessive increase or decrease in iron overload . based on similar studies ( 16 ) , a 30-subjects sample size was determined to be adequate for the study ( 15 patients in each group ) . however , considering the probability of loss , the sample size was increased to 50 subjects ( 25 in each group ) . among the 390 patients with thalassemia who had been referred to the hospital , 200 did not meet the inclusion criteria and 100 were not willing to participate in the study . therefore , 50 patients with major thalassemia were selected based on the inclusion criteria of the study ( figure 1 ) . these patients were randomly divided into an intervention and a control group . in this study , 12 patients were excluded due to hospitalization , unwillingness to continue participating in the study , and suffering from infectious diseases . thus , the number of patients in the intervention and control groups decreased from 25 each to 18 and 20 , respectively . the educational content was prepared based on various resources , articles , and specialists opinions . in the first session , the group members became familiar with each other , expressed their goals , and talked about their life experiences . the patients educational needs were also determined using a questionnaire . in the second session , the patients were provided with a brief description of the types of the disease , new treatment methods , and the dos and donts of eating . considering nutrition , the focus was on avoiding heme - iron - rich foods ( iron found in meat ) , substitution of the nutritional needs with non - heme - iron - rich foods ( iron found in non - meat materials ) , and the consumption of antioxidants , such as vitamins e and c ( box 1 ) . in the third session , exercise and physical activity within one s physical endurance were emphasized , and the principles and methods were explained . in addition , the patients were asked to do moderate exercises , such as walking , at home for 15 minutes every day and increase or decrease their duration and speed depending on their tolerance ( box 2 ) . in the fourth session , the importance of preventing infection , the association between infection , iron , and iron chelators as well as the prevention strategies was trained ( box 3 ) . it was reported that iron overload impaired the immune system and increased the risk of infection in thalassemia patients ( 18 ) . moreover many organisms , such as yersinia enterocolitica , klebsiella species , escherichia coli , streptococcus pneumoniae , pseudomonas aeroginosa , legionella pneumophila , and listeria monocytogenes , have been indicated to increase virulence in the presence of excessive iron ( 19 ) . in the fifth session , the nature , reason , and ways of praying were explained and the patients were asked to pray every day and fill their moments with god by attracting their heart and mind towards him . the spiritual training programs ( including intercessory prayer ) were carried out according to the participants religious beliefs ( all were muslim ) . it should be mentioned that the patients were required to repeat spiritual words and phrases at least three times a day . each training class lasted for 1 - 1.5 hours considering the patients understanding and tolerance levels . to ensure patient learning , they were involved in discussions and question - and - answer sessions after each training session . in addition , the participants were given a 15-page booklet entitled care program for major thalassemia patients , which contained the educational content of the training program after the intervention . a self - reporting performance record form was filled out daily by the patients to confirm their compliance with the educational program . they recorded no intake of red meat , fish , liver and kidney , the consumption of dairy products but only with meals , having fruits and vegetables as snacks , walking and its duration , performing infection strategies , and frequency of repetition of spiritual phrases . the researcher s contact number was also given to all the participants for any possible questions . the participants demographic characteristics consisted of age , gender , education level , time of diagnosis , number of transfusions , and medications used to reduce iron overload . additionally , the basic iron content included serum iron , ferritin , unsaturated iron - binding capacity ( uibc ) , and total iron - inding capacity ( tibc ) . the basic iron content was measured in a specialized laboratory . to ensure the reliability of the test results , all the experiments were carried out in a specialized laboratory by just one individual using specific kits ( electrochemi luminesence from roche germany ) to determine the amount of ferritin and then the colorimetric method to determine the iron and uibc at a given time . to prevent information transfer , the study was initially conducted in the control group , so that they could not get any information about the details of the intervention . it should be noted that the individual who took blood from the patients and the one who analyzed the tests were blind to the study groups . this study was registered in iranian registry of clinical trials of the ministry of health and medical education ( irct2014011216190n1 ) . the study was also approved by the ethics committee of shiraz university of medical sciences . written informed consent was obtained from all the participants . in this way they were also informed about the voluntary nature of the study and that their participation / non - participation had no effects on their treatments and care . the study data were analyzed using chi - square , fisher s exact test , mann - whitney , wilcoxon , independent samples t - test , and paired samples t - test with the the spss statistical software ( ver . the study results showed that the majority of the participants in both groups were 20 - 24 years old . in addition , 50% of the participants in the control group and 72.2% of those in the intervention group were female . in addition , 35% of the control group and 44.4% of the intervention group participants had high - school degrees . the results of the chi - square test ( or fisher s exact test in case the sample size was not large enough ) showed that the subjects in the two groups were homogeneous in terms of demographic characteristics ( age , sex , and education level ) , time of diagnosis , onset of transfusion , and chelator agent . a comparison of the iron measurements in the two groups both before and after the intervention is presented in table 2 . as the tabulation depicts , the intervention group s mean of ferritin two months after the intervention was significantly lower compared to before the intervention ( p = 0.04 ) . however , no significant change was observed in the control group in this regard ( p = 0.29 ) . besides , the mean level of serum iron was reduced in the intervention group , but the difference was not statistically significant ( p = 0.81 ) . also , this index increased in the control group , but the difference was not statistically significant ( p = 0.4 ) . moreover , the uibc level decreased in both groups , but it the decrease was significant only in the control group ( p = 0.04 ) compared to the intervention group ( p = 0.32 ) . the tibc level also decreased in both the intervention and control groups , but the difference was not statistically significant ( p = 0.26 and p = 0.11 , respectively ) . also , despite the decline in ferritin level in the intervention group after the intervention , the difference was not statistically significant ( p = 0.96 ) ; however , it was clinically considerable . finally , changes in serum iron , uibc , and tibc levels were not statistically significant ( p = 0.96 , p = 0.12 , and p = 0.20 , respectively ) . a comparison of the changes in iron indices in the two groups before and after the intervention has been presented in table 3 . abbreviations : sd , standard deviation ; tibc , total iron binding capacity ; uibc , unsaturated iron binding capacity . abbreviations : uibc , unsaturated iron binding capacity ; tibc , total iron binding capacity ; sd , standard deviation . the results of this study showed that application of a comprehensive educational program could improve ferritin levels and eventually decrease the complications of iron overload in thalassemic patients . in fact , application of the educational program in the intervention group significantly decreased the serum ferritin level two months following the intervention in comparison to before the intervention . this observation was consistent with the findings of the study by rahmaninia , as cited in heidary , which was conducted on the athletes in order to compare the effects of two types of physical activities on iron status and the soluble transferrin receptor ( 2 ) . presumably , the insignificant reduction in the intervention group participants serum iron levels was due to daily changes in serum iron levels as well as to demolition of iron release from red blood cells . in general , serum iron fluctuates daily and is influenced by several factors , including diet and infectious or inflammatory diseases ( 15 , 20 ) . these results were also in line with those obtained by heidary et al . in a study investigating the effect of eight weeks of aerobic training on hematology indices in patients with beta - thalassemia minor . the study results indicated that the serum ferritin level significantly was reduced in the intervention group eight weeks after doing aerobic exercises ( 2 ) . the present study further attempted to investigate the effects of exercising in conjunction with other methods of iron overload reduction , such as the reduction of intestinal iron absorption through the consumption or prohibition of some food groups , the application of safety methods to prevent infectious diseases , and prayer . considering the effect of exercising on reducing ferritin , it seems reasonable that hemolysis of unfavorable thalassemic hemoglobin occurs more frequently during exercise activities , eventually decreasing serum ferritin levels . additionally , some researchers believe that intestinal iron absorption is lower than normal in athletes . hence , in case thalassemic patients can decrease iron absorption through regular and constant aerobic activities , they can control their iron supply ( 16 ) . changes in the cell membrane , in turn , release tissue iron and increase serum ferritin and iron levels . however , desferal helps the iron to be excreted when iron is present in the blood . this is where the role of exercise in reduction of iron overload is manifested either directly or indirectly by increasing the efficiency of desferal ( 21 ) . the findings of the present study showed a decreased uibc in both study groups , but the difference was significant only in the control group ( p < 0.05 ) . studies have shown that high degrees of some substances , such as bilirubin , copper , and lipemia , and hemoglobin hemolysis > 200 mg / dl could affect uibc ; hence , the obtained results might not be very reliable ( 22 ) . thus , in case of liver disease or lack of adequate dietary protein , transferrin levels are reduced ( 23 ) and , consequently , both uibc and tibc drop without any direct relationship to the iron changes . these findings were not consistent with those of the studies by heydari et al . and vashtani et al . in addition to what was mentioned earlier about uibc , increase of tibc following reduction of serum iron level mainly occurs in anemia . in iron overload , on the other hand , by saturation of transferrin - iron binding capacity , non - transferrin bound iron ( ntbi ) , which is more toxic compared to iron bound to transferrin , appears in the blood circulation ( 4 , 24 , 25 ) . therefore , the change in tibc in response to a reduction of available serum iron is not valid in patients with iron overload . one of the limitations of the current study was that the patients responsibility and economic , occupational , and social status could have affected their adherence to and compliance with the training . therefore , to achieve more accurate results , further studies with larger sample sizes , longer follow - up periods , and more accurate methods of assessing iron overload ( such as soluble transferrin receptor liver iron concentration ) are recommended to be carried out . nowadays , similar to other patients suffering from other chronic diseases , thalassemic patients require careful training to perform the required care . providing and regulating training and care programs through comprehensive and constant courses by nurses can result in more accurate follow - ups and help reduce iron overload . these programs should be carried out by nurses since they have direct contact with patients while providing their services . in addition , comprehensive care programs meet the patients educational needs in various dimensions ; evidence from experiments has expressed the efficiency of such programs in reducing ferritin in thalassemic patients . therefore , the application of such care programs is recommended as a crucial step in reducing iron overload and its complications in different bodily organs , thereby improving the thalassemic patients health status .
backgroundexcessive iron accumulation in the visceral organs creates problems for patients with beta - thalassemia major . despite chelation therapy , 
 mortality rate from the complications of this disease is still quite high.objectivesthis study aimed to investigate the effectiveness of nutrition , exercise , and a praying program at reducing iron overload in patients with beta - thalassemia major.patients and methodsthis randomized clinical trial assessed the effect of the designed care program on iron overload . 
 the study was conducted in 38 patients with beta - thalassemia major who ranged in age from 15 - 35 years and had been referred to the largest center for thalassemic patients in shiraz . 
 the patients were randomly assigned to an intervention ( n = 18 ) and a control ( n = 20 ) group . 
 blood samples were collected from the participants before and two months after the intervention . 
 then , the data were statistically analyzed using chi - square , fisher s exact test , mann - whitney u - test , wilcoxon , independent samples t - test , and paired samples t-test.resultsthe results showed that the mean level of serum ferritin significantly decreased in the intervention group two months after beginning the intervention . 
 also , the mean level of serum iron decreased in the intervention group , but the difference was not statistically significant.conclusionsthe planned educational program could be used to reduce iron overload and ultimately improve the patients health status .