As Alexander Litvinenko fights for his life after being poisoned with thallium, I thank my lucky stars.

In the past I've suffered from panic attacks and was prescribed valium by the GP.

But you know what doctors' handwriting is like.

A slip-up by the pharmacist and I too could be as bald as Yul Brynner after a visit to the barbers.

More importantly, Litvinenko recently spoke at the Frontline Club about the murder of Russian journalist, Anna Politkovskaya.

Watch his contribution and you can realise the full extent of his devastating poisoning -- and understand the reasons why some people would want him dead.