• Nails grow approximaetly 1mm each week
• If you lost a nail completely, it will take six months to grow back
• Up to 45% of men bite their nails
• The rate at which your nails grow can be slowed down by illness, or speed up by stress and hot weather.
• Your diet dictates the condition of your nails. For extra-strength, eat food rich in calcium, iron and zinc.
• White marks on the nail are due to knocks, and not a sign of calcium deficiency.
• Strong
  soaps and detergents can dry out nails and cause them to split. Wear
  rubber gloves when using detergent or doing the washing up.

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