Evdochia Adoamnei1, Jaime Mendiola2, Miriam Moñino-García1, José J López-Espín3, Eva María Navarrete-Muñoz4, Alberto M Torres-Cantero5. 1. Área de Medicina Preventiva y Salud Pública, Departamento de Ciencias Sociosanitarias, Facultad de Medicina, Universidad de Murcia, Espinardo (Murcia), España; Instituto Murciano de Investigación Biosanitaria (IMIB-Arrixaca), El Palmar (Murcia), España. 2. Área de Medicina Preventiva y Salud Pública, Departamento de Ciencias Sociosanitarias, Facultad de Medicina, Universidad de Murcia, Espinardo (Murcia), España; Instituto Murciano de Investigación Biosanitaria (IMIB-Arrixaca), El Palmar (Murcia), España; CIBER de Epidemiología y Salud Pública (CIBERESP), Madrid, España. Electronic address: jaime.mendiola@um.es. 3. Instituto Murciano de Investigación Biosanitaria (IMIB-Arrixaca), El Palmar (Murcia), España; Centro de Investigación Operativa, Universidad Miguel Hernández, Elche (Alicante), España. 4. CIBER de Epidemiología y Salud Pública (CIBERESP), Madrid, España; Unidad de Epidemiología Nutricional, Universidad Miguel Hernández; Instituto de Investigación Sanitaria y Biomédica (Fundación ISABIAL-FISABIO), Alicante, España. 5. Área de Medicina Preventiva y Salud Pública, Departamento de Ciencias Sociosanitarias, Facultad de Medicina, Universidad de Murcia, Espinardo (Murcia), España; Instituto Murciano de Investigación Biosanitaria (IMIB-Arrixaca), El Palmar (Murcia), España; CIBER de Epidemiología y Salud Pública (CIBERESP), Madrid, España; Servicio de Medicina Preventiva, Hospital Clínico Universitario Virgen de la Arrixaca, El Palmar (Murcia), España.
Abstract
OBJECTIVE: The aim of this study was to study the associations between dietary intake of trace elements and semen quality and reproductive hormones levels in young men. MATERIAL AND METHOD: This is a cross-sectional study in healthy male university students (n=209) recruited in Murcia Region (Spain) between 2010 and 2011. Dietary intake of trace elements (iron, iodine and cinc) was assessed using a validated food frequency questionnaire. Semen analysis (sperm concentration, motility and morphology) was carried out according to World Health Organization guidelines. Serum concentrations of follicle-stimulating and luteinizing hormones and testosterone were also determined. Kruskal-Wallis and Chi-squared tests were used in bivariate analysis and multiple lineal regression was used to adjust for significant covariates. RESULTS: A statistically significant inverse association between dietary intake of iron and sperm concentration (P, trend=0.01) and the percentage of progressive motile sperm (P, trend=0.004) were observed. No other significant associations for the remaining sperm parameters or reproductive hormones were detected. CONCLUSIONS: Our results show that high levels of iron may be associated with reduced sperm concentration and motility in young men. However, further studies are needed, particularly in other male populations consulting for infertility problems.
OBJECTIVE: The aim of this study was to study the associations between dietary intake of trace elements and semen quality and reproductive hormones levels in young men. MATERIAL AND METHOD: This is a cross-sectional study in healthy male university students (n=209) recruited in Murcia Region (Spain) between 2010 and 2011. Dietary intake of trace elements (iron, iodine and cinc) was assessed using a validated food frequency questionnaire. Semen analysis (sperm concentration, motility and morphology) was carried out according to World Health Organization guidelines. Serum concentrations of follicle-stimulating and luteinizing hormones and testosterone were also determined. Kruskal-Wallis and Chi-squared tests were used in bivariate analysis and multiple lineal regression was used to adjust for significant covariates. RESULTS: A statistically significant inverse association between dietary intake of iron and sperm concentration (P, trend=0.01) and the percentage of progressive motile sperm (P, trend=0.004) were observed. No other significant associations for the remaining sperm parameters or reproductive hormones were detected. CONCLUSIONS: Our results show that high levels of iron may be associated with reduced sperm concentration and motility in young men. However, further studies are needed, particularly in other male populations consulting for infertility problems.
Authors: Ana Cutillas-Tolín; Evdochia Adoamnei; Eva M Navarrete-Muñoz; Jesús Vioque; Miriam Moñino-García; Niels Jørgensen; Jorge E Chavarro; Jaime Mendiola; Alberto M Torres-Cantero Journal: Hum Reprod Date: 2019-10-02 Impact factor: 6.918
Authors: Aldo Di Nunzio; Antonella Giarra; Maria Toscanesi; Angela Amoresano; Marina Piscopo; Elisabetta Ceretti; Claudia Zani; Stefano Lorenzetti; Marco Trifuoggi; Luigi Montano Journal: Int J Environ Res Public Health Date: 2022-09-15 Impact factor: 4.614