A method for diagnosing a reproduction-related disorder in an individual, comprising:rna) measuring the level of a miR200 nucleic acid and/or miR155 nucleic acid in a sample from an individual;rnb) comparing the level value of a miR200 nucleic acid and/or miR155 nucleic acid measured at step a) to a reference level value of the said miR200 acid nucleic and/or miR155rnnucleic acid.