Cofty, I think I read somewhere a month ago about you having an illness. Apologies for not reading the thread, I am quite a busy person, and a sporadic poster. I'm guessing from past posts you are in the UK. Check out the BBC Horizon programme on iplayer, (if you haven't already) titled 'eat.fast. and live longer'. In a nutshell, it deals with the fact that controlled calorie restriction in the form of fasting helps our bodies to naturally combat 21st century diseases like cancer, diabetes and heart disease. By restricting calories, our bodies repair the DNA damage done by free radicals, instead of replicating errors, and increasing cancer risk. it was bloody fascinating.
My missus just got over cancer, it's a subject close to my heart.
Wishing you love and luck for the future,
OLNS