It's a vitamin C deficiency so citrus fruits are the cure, not difficult to keep at bay really. I think it's probably months rather than weeks before you have to worry.
<hr width=100% size=1>Well it's all for me grog, me jolly jolly grog!
Might see you there. Could you put your blue ensign on your radio aerial and then I will be able to identify you. Most people who use Tescos have red ones.