Correlation Between Hemoglobin Levels and BMI in Dental Students: A Cross-Sectional Study
Keywords:
Hemoglobin, Body Mass Index (BMI), Dental Students, AnemiaAbstract
OBJECTIVES
This study aimed to determine the frequency of anemia in undergraduate dental students and the relationship between hemoglobin level and body mass index (BMI) in dental students.
METHODOLOGY
A cross-sectional study was conducted at a dental college in Peshawar. with 370 out of 400 students participating after ethical approval. Questionnaires were distributed, and consent was obtained for hemoglobin testing. Students with blood disorders, cardiovascular issues, or eating disorders were excluded. Five milliliters of venous blood were collected under aseptic conditions for a complete blood count using an automatic analyzer. Height and weight were measured to calculate BMI (BMI = weight (kg) / height (m²)). Participants were classified into anemic and non-anemic groups based on WHO guidelines. Data analysis was conducted using SPSS version 24, employing Pearson correlation to explore the relationship between anemia and BMI.
RESULTS
Among the students (n=370) who took part in our research, 149 (40.2%) were male, and 221 (59.8%) were female. Among them, only 6 (4%) male and 181 (81.9%) female students were anemic. The mean hemoglobin value in males was 13.38 gm/dl (± 1.70); in females, it was 11.75 gm/dl (± 1.15). According to the World Health Organization (WHO), a hemoglobin level of < 12 gram/deciliter is considered anemic. Of the female students, 94 (42.5%) were underweight. 127 female students, or 57.4% of the total, had a BMI that was within the healthy range. Not a single female student was obese. Thirteen (8.7%) male students were overweight, whereas 136 (91.2%) fell within the acceptable body mass index (BMI) range. No male student was underweight. The correlation between Hb and BMI was r=-0.49, P<0.001.
CONCLUSION
A strong negative correlation of hemoglobin level with body mass index was found. Anemia is more prevalent in females, which is of concern and must be addressed.
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Mamokem OT, Sop MMK, Marbou WJT, Telefo BP. Prevalence and Associated Risk Factors of Iron Deficiency Anemia Among School Teenagers in Mbouda, Western Cameroon: A Cross Sectional Study. Eur J Med Heal Sci. 2022;4(1):52–60.
Sonoda K. Iron deficiency anemia: guidelines from the American Gastroenterological Association. Am Fam Physician. 2021;104(2):211-2.
Aedh A, Elfaki NK, Einas MS. Iron deficiency anemia and associated risk factors among teenagers in Najran, Saudi Arabia. Int J Med Res Heal Sci. 2019;8(5):108–14.
Kinyoki D, Osgood-Zimmerman AE, Bhattacharjee N V, Kassebaum NJ, Hay SI. Anemia prevalence in women of reproductive age in low-and middle-income countries between 2000 and 2018. Nat Med. 2021;27(10):1761-82.
Andriastuti M, Ilmana G, Nawangwulan SA, Kosasih KA. Prevalence of anemia and iron profile among children and adolescent with low socio-economic status. Int J Pediatr Adolesc Med. 2020;7(2):88-92.
Samson KLI, Fischer JAJ, Roche ML. Iron status, anemia, and iron interventions and their associations with cognitive and academic performance in adolescents: a systematic review. Nutrients. 2022;14(1):224.
Juffrie M, Helmyati S, Hakimi M. Nutritional anemia in Indonesia children and adolescents: Diagnostic reliability for appropriate management. Asia Pac J Clin Nutr. 2020;29.
Agustina R, Nadiya K, Andini EA, Setianingsih AA, Sadariskar AA, Prafiantini E, et al. Associations of meal patterning, dietary quality and diversity with anemia and overweight-obesity among Indonesian school-going adolescent girls in West Java. PLoS One. 2020;15(4):e0231519.
Kamruzzaman M. Is BMI associated with anemia and hemoglobin level of women and children in Bangladesh: A study with multiple statistical approaches. PLoS One. 2021;16(10):e0259116.
Alshwaiyat NM, Ahmad A, Wan Hassan WMR, Al-Jamal HAN. Association between obesity and iron deficiency (Review). Exp Ther Med. 2021 Nov;22(5):1268.
Atique H, Taufiq A, Mazhar A, Yousaf R, Asghar A, Irfan A. Comparison of BMI and Haemoglobin levels in female day-scholar and hostelite students of Islamabad Medical and Dental College, Islamabad, Pakistan. Rawal Med J. 2019;44(2):229.
George RS, Devi RG, Jyothipriya A. Awareness of nutrition and anemia among dental students in South Indian population. Drug Invent Today. 2019;12(8).
Al-Jamea L, Woodman A, Elnagi EA, Al-Amri SS, Al-Zahrani AA, Al-shammari NH, et al. Prevalence of Iron-deficiency anemia and its associated risk factors in female undergraduate students at prince sultan military college of health sciences. J Appl Hematol. 2019;10(4):126.
Ghadiri-Anari A, Nazemian N, Vahedian-Ardakani HA. Association of body mass index with hemoglobin concentration and iron parameters in Iranian population. Int Sch Res Not. 2014;2014.
Purdy JC, Shatzel JJ. The hematologic consequences of obesity. Eur J Haematol. 2021;106(3):306-19.
Khanna D, Peltzer C, Kahar P, Parmar MS. Body mass index (BMI): a screening tool analysis. Cureus. 2022;14(2).
Weir CB, Jan A. BMI classification percentile and cut off points. 2019;
Zaffar S, Khan QU, Tanveer H, Chattha IR, Rashid N, Kamran R, et al. Prevalence of Anemia and Use of Iron Supplements in MBBS Students of CMH Lahore Medical College. Pakistan J Med Heal Sci. 2021;15(6):1185–7.
Kannan U, Achuthan A. Correlation of Hemoglobin concentration with Body Mass Index among medical students. Indian J Clin Anat Physiol. 2017;4(2):227-30.
Dobner J, Kaser S. Body mass index and the risk of infection-from underweight to obesity. Clin Microbiol Infect. 2018;24(1):24-8.
Ali SM, Lindström M. Socioeconomic, psychosocial, behavioural, and psychological determinants of BMI among young women: differing patterns for underweight and overweight/obesity. Eur J Public Health. 2006;16(3):324-30.
Jamali YA, Khan JA, Hussain M, Khuhro AB, Ahmed S, Unar I. PREVALENCE OF ANAEMIA AMONG THE STUDENTS AT SHAH ABDUL LATIF UNIVERSITY, KHAIRPUR.: http://doi. org/10.46536/jpumhs/2023/13.01. 393. J Peoples Univ Med Heal Sci Nawabshah(JPUMHS). 2023;13(1):110-6.
Kanchana R, Pushpa K. Prevalence of anemia among 1st year MBBS students. Natl J Physiol Pharm Pharmacol. 2019;9(1):74-7.
Tandoh MA, Appiah AO, Edusei AK. Prevalence of anemia and undernutrition of adolescent females in selected schools in Ghana. J Nutr Metab. 2021;2021(1):6684839.
Ahad F, Jaan I, Gowhar M. Hemoglobin concentration in relation to body mass index among undergraduate medical students-A cross-sectional institutional study. Natl J Physiol Pharm Pharmacol. 2020;10(8):631-4.
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Copyright (c) 2025 Nazma Saleem, Syeda Masooma Hussain, Spogmay Zafar, Qurat Ul Ain, Filza Salim, Nazish Sadiq

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