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The nutrients used by the human body to build cells are acted on by proteins. Among the cells formed by these proteins are erythrocytes. Therefore, if the intake of protein from foodstuffs is reduced, of course it will disrupt the erythrocyte formation process. As a result, there will be a decrease in the number of erythrocytes which will also have an effect on anemia. Therefore, this study aimed to analyze the relationship between protein intake and the number
of erythrocytes in pregnant women in the coastal area of Brebes Regency. This study will use an analytic survey method with a cross-sectional approach. The population used was all pregnant women who were present at the time of the research process using a purposive sampling model. The results showed that of the 49 respondents who were present at the time of the study, there were 14.3% respondents who experienced low protein intake and 85.7% respondents who had good protein intake. From the protein intake data, when analyzed through
chi-square analysis, the results of the relationship between low protein intake and low erythrocyte count in pregnant women were obtained, namely (p = 0.013 <0.05) with POR = 3,000; CI = 1.704-5,283