Waist-to-Hip Ratio, but Not Body Mass Index, Is Associated with Testosterone and Estradiol Concentrations in Young Women.
We studied if testosterone and estradiol concentrations are associated with specific female waist-to-hip ratios (WHRs) and body mass indices (BMIs). Participants were 187 young women from which waist, hips, weight, and height were measured. In addition, participants informed on which day of their menstrual cycle they were and provided a 6 mL saliva sample. Ninety-one of them were in the follicular phase and 96 in the luteal phase. Only in the fertile phase of the menstrual cycle we found a significant interaction between testosterone and estradiol affecting WHR (b ± s.e. = -0.000003 ± 0.000001;  t 94 = -2.12, adjusted R (2) = -0.008,  P = 0.03). Women with the highest levels of both hormones had the lowest WHRs, while women with low estradiol and high testosterone showed the highest WHRs. BMI significantly increased as testosterone increased in female in their nonfertile days.
Departamento de Etología, Instituto Nacional de Psiquiatría, "Ramón de la Fuente Muñiz", Calzada México-Xochimilco 101, Colonia San Lorenzo Huipulco, Tlalpan, 14370 México, DF, Mexico.
Ricardo
R
Mondragón-Ceballos
Departamento de Etología, Instituto Nacional de Psiquiatría, "Ramón de la Fuente Muñiz", Calzada México-Xochimilco 101, Colonia San Lorenzo Huipulco, Tlalpan, 14370 México, DF, Mexico.
Mónica Dafne
MD
García Granados
Departamento de Etología, Instituto Nacional de Psiquiatría, "Ramón de la Fuente Muñiz", Calzada México-Xochimilco 101, Colonia San Lorenzo Huipulco, Tlalpan, 14370 México, DF, Mexico.
Ana Lilia
AL
Cerda-Molina
Departamento de Biología de la Reproducción, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Calle Vasco de Quiroga 15, Colonia Sección XVI, Tlalpan, 14000 Mexico, DF, Mexico.
Roberto
R
Chavira-Ramírez
Departamento de Etología, Instituto Nacional de Psiquiatría, "Ramón de la Fuente Muñiz", Calzada México-Xochimilco 101, Colonia San Lorenzo Huipulco, Tlalpan, 14370 México, DF, Mexico.
Leonor Estela
LE
Hernández-López