I had very aggressive chemotherapy a long time ago & I too could write a book, but I know that treatments have improved since then having unfortunately witnessed friends & family going through it.
A lot depends on what type of cancer is being treated & how soon it's been caught. I was very ill before I started chemo, so it was very hard, but for someone who is otherwise strong there may be very few side effects.( A friend only had slight hair loss & nausea ). The thing that hasn't changed, I'm sure, is the emotional turmoil & the fear, for the patient & their nearest & dearest. Nurses & doctors are better (or should be) equiped for this side of things, & there are many support groups around. For me the people who treated me as normally as possible were the best because I felt like an alien! All the best (&
PaulB and your friend) & if I can help anymore I will try. This is an excellent site
http://www.cancerbacup.org.uk/Home