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Introduction: Introduction: cervical cancer is the second most common cancer in women in the world. It is associated with a high body mass index. However, the phase angle has not been determined in women with cervical cancer. Electrical vector bioimpedance has been validated to assess body composition, nutritional status, and cell membrane integrity in cancer patients using phase angle. Objetive: to evaluate phase angle, body composition by electrical vector bioimpedance, and dietary intake in women with cervical diagnosis who are users of a second-level care hospital in San Luis Potosí, Mexico. Methods: an observational, cross-sectional, and analytical study. Seventy women with a diagnosis of cervical cancer were studied in the oncology service. Phase angle was measured, and the frequency of food from the Nutritional Habits Assessment System and a questionnaire to measure socioeconomic level were applied. Results: the data of the phase angle in a mean of 4.66 ° ± 0.87 ° with a range of 2.9 ° to 6.2 ° In a multiple linear regression model formed for phase angle as a dependent variable, and evolution of the cervical cancer, body mass index, skeletal muscle mass, extracellular water, fructose, saturated fatty acids, and trans fatty acids as independent variables, had an R2 value of 0.748 with a p-value of 0.001. Conclusion: women with cervical cancer have integrity damage of the cell membrane with a lower phase angle than the reference population.