Nails have got white patches and gone soft - what can I do?

[WheresTheCat]

Over the last month or so my nails have developed white patches (like they're scuffed) and gone really soft and bendy. I thought it might be lack of calcium, but I haven't changed my diet.
Anyone know anything about this? They're all split and horrible

It can be an indicator for lack of nutrients (various minerals such as zinc) or poor absorption of them from your diet. Saying that, my nails are always dreadful at this time of year so I assume central heating/weather may also play a part. Have you been ill recently? That may also affect your nails.

I have had an awful cold so could be this. Thanks mumtoted - will stock up on the vitamins anyway!