Hi Elena
Banana's that taste and have the texture of wet cardboard and chocolate is horrid.. oh well...
Hopefully someone who has has radiation can give you an insight to that side of things, but the numb tongue, well, all I can say is after 13 months it's not so noticeable, I think I've learned to keep the food on the side that still has some feeling, I also had one side of my throat replaced so I still choke on some foods but even that is getting better I was told it can take up to 2 years to heal fully,
Hope this helps....
Sunshine... love and hugs
Helen