sˈɪns fˈaɪvhˈʌndɹɪd bˈiː.sˈiː., sˌʌm ɹᵻsˈɜːtʃɚz hæv bᵻlˈiːvd ðætðə fˈɪzɪkəl kəndˈɪʃən ʌvðə fˈɪŋɡɚnˌeɪlz ænd tˈoʊneɪlz kæn ˈɪndᵻkˌeɪt vˈɛɹiəs sɪstˈɛmɪk dɪzˈiːzᵻz.
Since 500 B.C., some researchers have believed that the physical condition of the fingernails and toenails can indicate various systemic diseases.