title: Effect of fasting on 24-h blood pressure values of individuals with no previous history of hypertension.
abstract: OBJECTIVE
  We aimed to analyze the difference in 24-h blood pressure values during Ramadan of fasting and nonfasting individuals with no previous history of hypertension.
  
  
  METHODS
  This study was planned as a multicenter research study in the cities of Izmit, Zonguldak, Sivas, and Adana. The percentage changes in the blood pressure of the patients were calculated from their blood pressure measurements at 0 h while they were resting. A Food Frequency Questionnaire was filled out by all participants.
  
  
  RESULTS
  Forty patients were included in the fasting group and 55 patients were included in the nonfasting group in the study. There was a difference between the two groups in percent changes of systolic measurements performed at the 4th (5% difference and P=0.020), 13th (6% difference and P=0.015), 14th (10% difference and P=0.017), 18th (9% difference and P=0.027), 19th (9% difference and P=0.020), and 20th (6% difference and P=0.014) hours with respect to the baseline measurement at the 0 h. There was a difference between the fasting and nonfasting groups in the Fasting Food Questionnaire results. Meat consumption was significantly higher in the fasting group.
  
  
  CONCLUSIONS
  A systolic blood pressure increase in fasting patients was observed in measurements at 18:00, 19:00, and 20:00 h. We believe that an increase of more than 10% in blood pressure at the time of iftar is an important result of our study in terms of the meal preferences of the individuals under risk.
authors.affiliation: aDepartment of Nephrology, Cumhuriyet University, Sivas bDepartment of Family Medicine, University of Health Sciences, Bursa Yuksek Ihtisas Training and Research Hospital cDepartment of Biostatistics, Uludag University dDepartment of Cardiovascular Surgery, University of Health Sciences, Bursa Yuksek Ihtisas Training and Research Hospital, Bursa eDepartment of Cardiology, Biruni University fDepartment of Nephrology, Istanbul Yeni Yuzyil University, Istanbul gDepartment of Menemen, Family Health Center, Menemen, Izmir, Turkey.
authors.forename: Ayse
authors.initials: A
authors.lastname: Seker
authors.forename: Hakan
authors.initials: H
authors.lastname: Demirci
authors.forename: Gokhan
authors.initials: G
authors.lastname: Ocakoglu
authors.forename: Ufuk
authors.initials: U
authors.lastname: Aydin
authors.forename: Hakan
authors.initials: H
authors.lastname: Ucar
authors.forename: Gursel
authors.initials: G
authors.lastname: Yildiz
authors.forename: Ozen
authors.initials: O
authors.lastname: Yaman
mesh_terms: D001794:Blood Pressure / Q000502:physiology*; D005215:Fasting; D005260:Female; D006801:Humans; D006973:Hypertension; D007514:Islam; D008297:Male