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The results also showed that fingernails now grow by 3.47mm every month â almost twice as fast as toenails. The nails of younger people and men grow faster. The little finger nail grows much more slowly than other fingernails, at a rate of 3.08mm each month. The middle finger has the fastest-growing nail.
Bruce Robinson, MD at Lenox Hill Hospital in New York asserts, that you can't make your nails grow faster [WebMD.com]. Says Robinson, Your nails grow at a fixed rate of about a millimieter a month. But if you can get the nails to not break (stronger) and therefore appear longer, that's where things come into play..